Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2018 IBM Corporation and others. * * This program and the accompanying materials * are made available under the terms of the Eclipse Public License 2.0 * which accompanies this distribution, and is available at * https://www.eclipse.org/legal/epl-2.0/ * * SPDX-License-Identifier: EPL-2.0 * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.swt.widgets; import java.util.*; import org.eclipse.swt.*; import org.eclipse.swt.events.*; import org.eclipse.swt.graphics.*; import org.eclipse.swt.internal.*; import org.eclipse.swt.internal.gtk.*; /** * Instances of this class are selectable user interface * objects that allow the user to enter and modify text. * Text controls can be either single or multi-line. * When a text control is created with a border, the * operating system includes a platform specific inset * around the contents of the control. When created * without a border, an effort is made to remove the * inset such that the preferred size of the control * is the same size as the contents. * <dl> * <dt><b>Styles:</b></dt> * <dd>CENTER, ICON_CANCEL, ICON_SEARCH, LEFT, MULTI, PASSWORD, SEARCH, SINGLE, RIGHT, READ_ONLY, WRAP</dd> * <dt><b>Events:</b></dt> * <dd>DefaultSelection, Modify, Verify, OrientationChange</dd> * </dl> * <p> * Note: Only one of the styles MULTI and SINGLE may be specified, * and only one of the styles LEFT, CENTER, and RIGHT may be specified. * </p> * <p> * Note: The styles ICON_CANCEL and ICON_SEARCH are hints used in combination with SEARCH. * When the platform supports the hint, the text control shows these icons. When an icon * is selected, a default selection event is sent with the detail field set to one of * ICON_CANCEL or ICON_SEARCH. Normally, application code does not need to check the * detail. In the case of ICON_CANCEL, the text is cleared before the default selection * event is sent causing the application to search for an empty string. * </p> * <p> * Note: Some text actions such as Undo are not natively supported on all platforms. * </p> * <p> * IMPORTANT: This class is <em>not</em> intended to be subclassed. * </p> * * @see <a href="http://www.eclipse.org/swt/snippets/#text">Text snippets</a> * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a> * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> * @noextend This class is not intended to be subclassed by clients. */ public class Text extends Scrollable { long bufferHandle; long imContext; int tabs = 8, lastEventTime = 0; long gdkEventKey = 0; int fixStart = -1, fixEnd = -1; boolean doubleClick; String message = ""; static final char LTR_MARK = '\u200e'; static final char RTL_MARK = '\u200f'; int[] segments; static final int ITER_SIZEOF = GTK.GtkTextIter_sizeof(); static final int SPACE_FOR_CURSOR = 1; /** * The maximum number of characters that can be entered * into a text widget. * <p> * Note that this value is platform dependent, based upon * the native widget implementation. * </p> */ public final static int LIMIT; /** * The delimiter used by multi-line text widgets. When text * is queried and from the widget, it will be delimited using * this delimiter. */ public final static String DELIMITER; /* * These values can be different on different platforms. * Therefore they are not initialized in the declaration * to stop the compiler from inlining. */ static { LIMIT = 0x7FFFFFFF; DELIMITER = "\n"; } /* Text uses non-standard CSS to set its background color, so we need * a global variable to keep track of its background color. */ GdkRGBA background, foreground; long indexMark = 0; double cachedAdjustment, currentAdjustment; /** * Constructs a new instance of this class given its parent * and a style value describing its behavior and appearance. * <p> * The style value is either one of the style constants defined in * class <code>SWT</code> which is applicable to instances of this * class, or must be built by <em>bitwise OR</em>'ing together * (that is, using the <code>int</code> "|" operator) two or more * of those <code>SWT</code> style constants. The class description * lists the style constants that are applicable to the class. * Style bits are also inherited from superclasses. * </p> * * @param parent a composite control which will be the parent of the new instance (cannot be null) * @param style the style of control to construct * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> * </ul> * * @see SWT#SINGLE * @see SWT#MULTI * @see SWT#READ_ONLY * @see SWT#WRAP * @see SWT#LEFT * @see SWT#RIGHT * @see SWT#CENTER * @see SWT#PASSWORD * @see SWT#SEARCH * @see SWT#ICON_SEARCH * @see SWT#ICON_CANCEL * @see Widget#checkSubclass * @see Widget#getStyle */ public Text(Composite parent, int style) { super(parent, checkStyle(style)); if ((style & SWT.SEARCH) != 0) { /* * Ensure that SWT.ICON_CANCEL and ICON_SEARCH are set. * NOTE: ICON_CANCEL has the same value as H_SCROLL and CON_SEARCH has the same value as V_SCROLL * so it is necessary to first clear these bits to avoid a scroll bar and then reset the * bit using the original style upplied by the programmer. * * NOTE2: Default GtkSearchEntry shows both "find" icon and "clear" icon. * "find" icon can be manually removed here while "clear" icon must be removed depending on text. * See gtk_changed. */ this.style |= SWT.ICON_SEARCH | SWT.ICON_CANCEL; if ((style & SWT.ICON_SEARCH) == 0) { this.style &= ~SWT.ICON_SEARCH; GTK.gtk_entry_set_icon_from_icon_name(handle, GTK.GTK_ENTRY_ICON_PRIMARY, null); } else { // Default GtkSearchEntry always shows inactive "find" icon // make it active and sensitive to be consistent with other platforms GTK.gtk_entry_set_icon_activatable(handle, GTK.GTK_ENTRY_ICON_PRIMARY, true); GTK.gtk_entry_set_icon_sensitive(handle, GTK.GTK_ENTRY_ICON_PRIMARY, true); } if ((style & SWT.ICON_CANCEL) == 0) { this.style &= ~SWT.ICON_CANCEL; } } } static int checkStyle(int style) { if ((style & SWT.SEARCH) != 0) { style |= SWT.SINGLE | SWT.BORDER; style &= ~SWT.PASSWORD; /* * NOTE: ICON_CANCEL has the same value as H_SCROLL and * ICON_SEARCH has the same value as V_SCROLL so they are * cleared because SWT.SINGLE is set. */ } if ((style & SWT.SINGLE) != 0 && (style & SWT.MULTI) != 0) { style &= ~SWT.MULTI; } style = checkBits(style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0); if ((style & SWT.SINGLE) != 0) style &= ~(SWT.H_SCROLL | SWT.V_SCROLL | SWT.WRAP); if ((style & SWT.WRAP) != 0) { style |= SWT.MULTI; style &= ~SWT.H_SCROLL; } if ((style & SWT.MULTI) != 0) style &= ~SWT.PASSWORD; if ((style & (SWT.SINGLE | SWT.MULTI)) != 0) return style; if ((style & (SWT.H_SCROLL | SWT.V_SCROLL)) != 0) return style | SWT.MULTI; return style | SWT.SINGLE; } @Override void createHandle(int index) { state |= HANDLE | MENU; if ((style & SWT.READ_ONLY) != 0) { if (applyThemeBackground() == 1) { state |= THEME_BACKGROUND; } } fixedHandle = OS.g_object_new(display.gtk_fixed_get_type(), 0); if (fixedHandle == 0) error(SWT.ERROR_NO_HANDLES); gtk_widget_set_has_surface_or_window(fixedHandle, true); if ((style & SWT.SINGLE) != 0) { if ((style & SWT.SEARCH) != 0) { handle = GTK.gtk_search_entry_new(); } else { handle = GTK.gtk_entry_new(); } if (handle == 0) error(SWT.ERROR_NO_HANDLES); GTK.gtk_container_add(fixedHandle, handle); GTK.gtk_editable_set_editable(handle, (style & SWT.READ_ONLY) == 0); /* * We need to handle borders differently in GTK3.20+. GtkEntry without frame will have a blank background color. * So let's set border via css and override the background in this case to be COLOR_LIST_BACKGROUND. */ if (GTK.GTK_VERSION >= OS.VERSION(3, 20, 0)) { if ((style & SWT.BORDER) == 0) { GTK.gtk_entry_set_has_frame(handle, false); long context = GTK.gtk_widget_get_style_context(handle); String background = display.gtk_rgba_to_css_string(display.COLOR_LIST_BACKGROUND_RGBA); gtk_css_provider_load_from_css(context, "entry {border: solid; background: " + background + ";}"); GTK.gtk_style_context_invalidate(context); } } else { GTK.gtk_entry_set_has_frame(handle, (style & SWT.BORDER) != 0); } GTK.gtk_entry_set_visibility(handle, (style & SWT.PASSWORD) == 0); float alignment = 0.0f; if ((style & SWT.CENTER) != 0) alignment = 0.5f; if ((style & SWT.RIGHT) != 0) alignment = 1.0f; if (alignment > 0.0f) { GTK.gtk_entry_set_alignment(handle, alignment); } } else { scrolledHandle = GTK.gtk_scrolled_window_new(0, 0); if (scrolledHandle == 0) error(SWT.ERROR_NO_HANDLES); handle = GTK.gtk_text_view_new(); if (handle == 0) error(SWT.ERROR_NO_HANDLES); bufferHandle = GTK.gtk_text_view_get_buffer(handle); if (bufferHandle == 0) error(SWT.ERROR_NO_HANDLES); GTK.gtk_container_add(fixedHandle, scrolledHandle); GTK.gtk_container_add(scrolledHandle, handle); GTK.gtk_text_view_set_editable(handle, (style & SWT.READ_ONLY) == 0); if ((style & SWT.WRAP) != 0) GTK.gtk_text_view_set_wrap_mode(handle, GTK.GTK_WRAP_WORD_CHAR); int hsp = (style & SWT.H_SCROLL) != 0 ? GTK.GTK_POLICY_ALWAYS : GTK.GTK_POLICY_NEVER; int vsp = (style & SWT.V_SCROLL) != 0 ? GTK.GTK_POLICY_ALWAYS : GTK.GTK_POLICY_NEVER; GTK.gtk_scrolled_window_set_policy(scrolledHandle, hsp, vsp); if ((style & SWT.BORDER) != 0) { GTK.gtk_scrolled_window_set_shadow_type(scrolledHandle, GTK.GTK_SHADOW_ETCHED_IN); } int just = GTK.GTK_JUSTIFY_LEFT; if ((style & SWT.CENTER) != 0) just = GTK.GTK_JUSTIFY_CENTER; if ((style & SWT.RIGHT) != 0) just = GTK.GTK_JUSTIFY_RIGHT; GTK.gtk_text_view_set_justification(handle, just); } imContext = OS.imContextLast(); if ((style & SWT.SINGLE) != 0) { GTK.gtk_entry_set_width_chars(handle, 1); } // In GTK 3 font description is inherited from parent widget which is not how SWT has always worked, // reset to default font to get the usual behavior setFontDescription(defaultFont().handle); } @Override int applyThemeBackground() { return (backgroundAlpha == 0 || (style & (SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL)) == 0) ? 1 : 0; } @Override void createWidget(int index) { super.createWidget(index); doubleClick = true; } /** * Adds the listener to the collection of listeners who will * be notified when the receiver's text is modified, by sending * it one of the messages defined in the <code>ModifyListener</code> * interface. * * @param listener the listener which should be notified * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see ModifyListener * @see #removeModifyListener */ public void addModifyListener(ModifyListener listener) { checkWidget(); if (listener == null) error(SWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener(listener); addListener(SWT.Modify, typedListener); } /** * Adds a segment listener. * <p> * A <code>SegmentEvent</code> is sent whenever text content is being modified or * a segment listener is added or removed. You can * customize the appearance of text by indicating certain characters to be inserted * at certain text offsets. This may be used for bidi purposes, e.g. when * adjacent segments of right-to-left text should not be reordered relative to * each other. * E.g., multiple Java string literals in a right-to-left language * should generally remain in logical order to each other, that is, the * way they are stored. * </p> * <p> * <b>Warning</b>: This API is currently only implemented on Windows and GTK. * <code>SegmentEvent</code>s won't be sent on Cocoa. * </p> * * @param listener the listener which should be notified * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see SegmentEvent * @see SegmentListener * @see #removeSegmentListener * * @since 3.8 */ public void addSegmentListener(SegmentListener listener) { checkWidget(); if (listener == null) error(SWT.ERROR_NULL_ARGUMENT); addListener(SWT.Segments, new TypedListener(listener)); clearSegments(true); applySegments(); } /** * Adds the listener to the collection of listeners who will * be notified when the control is selected by the user, by sending * it one of the messages defined in the <code>SelectionListener</code> * interface. * <p> * <code>widgetSelected</code> is not called for texts. * <code>widgetDefaultSelected</code> is typically called when ENTER is pressed in a single-line text, * or when ENTER is pressed in a search text. If the receiver has the <code>SWT.SEARCH | SWT.ICON_CANCEL</code> style * and the user cancels the search, the event object detail field contains the value <code>SWT.ICON_CANCEL</code>. * Likewise, if the receiver has the <code>SWT.ICON_SEARCH</code> style and the icon search is selected, the * event object detail field contains the value <code>SWT.ICON_SEARCH</code>. * </p> * * @param listener the listener which should be notified when the control is selected by the user * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see SelectionListener * @see #removeSelectionListener * @see SelectionEvent */ public void addSelectionListener(SelectionListener listener) { checkWidget(); if (listener == null) error(SWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener(listener); addListener(SWT.Selection, typedListener); addListener(SWT.DefaultSelection, typedListener); } /** * Adds the listener to the collection of listeners who will * be notified when the receiver's text is verified, by sending * it one of the messages defined in the <code>VerifyListener</code> * interface. * * @param listener the listener which should be notified * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see VerifyListener * @see #removeVerifyListener */ public void addVerifyListener(VerifyListener listener) { checkWidget(); if (listener == null) error(SWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener(listener); addListener(SWT.Verify, typedListener); } /** * Appends a string. * <p> * The new text is appended to the text at * the end of the widget. * </p> * * @param string the string to be appended * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the string is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void append(String string) { checkWidget(); if (string == null) error(SWT.ERROR_NULL_ARGUMENT); byte[] buffer = Converter.wcsToMbcs(string, false); clearSegments(true); if ((style & SWT.SINGLE) != 0) { GTK.gtk_editable_insert_text(handle, buffer, buffer.length, new int[] { -1 }); GTK.gtk_editable_set_position(handle, -1); } else { byte[] position = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_end_iter(bufferHandle, position); GTK.gtk_text_buffer_insert(bufferHandle, position, buffer, buffer.length); GTK.gtk_text_buffer_place_cursor(bufferHandle, position); long mark = GTK.gtk_text_buffer_get_insert(bufferHandle); GTK.gtk_text_view_scroll_to_mark(handle, mark, 0, true, 0, 0); } applySegments(); } void applySegments() { /* * It is possible (but unlikely), that application code could have * disposed the widget in the modify event. If this happens, return to * cancel the operation. */ if (isDisposed() || (!hooks(SWT.Segments) && !filters(SWT.Segments))) return; Event event = new Event(); String string = getText(); event.text = string; event.segments = segments; sendEvent(SWT.Segments, event); segments = event.segments; if (segments == null) return; int nSegments = segments.length; if (nSegments == 0) return; for (int i = 1, length = string == null ? 0 : string.length(); i < nSegments; i++) { if (event.segments[i] < event.segments[i - 1] || event.segments[i] > length) { error(SWT.ERROR_INVALID_ARGUMENT); } } char[] segmentsChars = event.segmentsChars; char[] separator = { getOrientation() == SWT.RIGHT_TO_LEFT ? RTL_MARK : LTR_MARK }; if ((style & SWT.SINGLE) != 0) { OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); int limit = GTK.gtk_entry_get_max_length(handle); if (limit != 0) GTK.gtk_entry_set_max_length(handle, translateOffset(limit)); int[] pos = new int[1]; for (int i = 0; i < nSegments; i++) { pos[0] = segments[i] + i; if (segmentsChars != null && segmentsChars.length > i) { separator[0] = segmentsChars[i]; } byte[] buffer = Converter.wcsToMbcs(separator, false); long ptr = GTK.gtk_entry_get_text(handle); pos[0] = (int) OS.g_utf16_offset_to_utf8_offset(ptr, pos[0]); GTK.gtk_editable_insert_text(handle, buffer, buffer.length, pos); } OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); } else { OS.g_signal_handlers_block_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_block_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT); byte[] pos = new byte[ITER_SIZEOF]; byte[] startIter = new byte[ITER_SIZEOF]; byte[] endIter = new byte[ITER_SIZEOF]; for (int i = 0; i < nSegments; i++) { GTK.gtk_text_buffer_get_bounds(bufferHandle, startIter, endIter); long ptr = GTK.gtk_text_buffer_get_text(bufferHandle, startIter, endIter, true); GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, pos, (int) OS.g_utf16_offset_to_utf8_offset(ptr, segments[i] + i)); OS.g_free(ptr); if (segmentsChars != null && segmentsChars.length > i) { separator[0] = segmentsChars[i]; } byte[] buffer = Converter.wcsToMbcs(separator, false); GTK.gtk_text_buffer_insert(bufferHandle, pos, buffer, buffer.length); } OS.g_signal_handlers_unblock_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_unblock_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT); } } void clearSegments(boolean applyText) { if (segments == null) return; int nSegments = segments.length; if (nSegments == 0) return; if ((style & SWT.SINGLE) != 0) { OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); if (applyText) { OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT); long ptr = GTK.gtk_entry_get_text(handle); int start, end; for (int i = 0; i < nSegments; i++) { start = (int) OS.g_utf16_offset_to_utf8_offset(ptr, segments[i]); end = (int) OS.g_utf16_offset_to_utf8_offset(ptr, segments[i] + 1); GTK.gtk_editable_delete_text(handle, start, end); } OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT); } int limit = GTK.gtk_entry_get_max_length(handle); if (limit != 0) GTK.gtk_entry_set_max_length(handle, untranslateOffset(limit)); OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); } else if (applyText) { OS.g_signal_handlers_block_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_block_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_RANGE); byte[] start = new byte[ITER_SIZEOF], end = new byte[ITER_SIZEOF]; byte[] startIter = new byte[ITER_SIZEOF], endIter = new byte[ITER_SIZEOF]; for (int i = 0; i < nSegments; i++) { GTK.gtk_text_buffer_get_bounds(bufferHandle, startIter, endIter); long ptr = GTK.gtk_text_buffer_get_text(bufferHandle, startIter, endIter, true); GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, start, (int) OS.g_utf16_offset_to_utf8_offset(ptr, segments[i])); GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, end, (int) OS.g_utf16_offset_to_utf8_offset(ptr, segments[i] + 1)); GTK.gtk_text_buffer_delete(bufferHandle, start, end); OS.g_free(ptr); } OS.g_signal_handlers_unblock_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_RANGE); OS.g_signal_handlers_unblock_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); } segments = null; } /** * Clears the selection. * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void clearSelection() { checkWidget(); if ((style & SWT.SINGLE) != 0) { int position = GTK.gtk_editable_get_position(handle); GTK.gtk_editable_select_region(handle, position, position); } else { byte[] position = new byte[ITER_SIZEOF]; long insertMark = GTK.gtk_text_buffer_get_insert(bufferHandle); GTK.gtk_text_buffer_get_iter_at_mark(bufferHandle, position, insertMark); GTK.gtk_text_buffer_select_range(bufferHandle, position, position); } } @Override Point computeSizeInPixels(int wHint, int hHint, boolean changed) { checkWidget(); if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0; if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0; int[] w = new int[1], h = new int[1]; if ((style & SWT.SINGLE) != 0) { GTK.gtk_widget_realize(handle); long layout = GTK.gtk_entry_get_layout(handle); OS.pango_layout_get_pixel_size(layout, w, h); } else { byte[] start = new byte[ITER_SIZEOF], end = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_bounds(bufferHandle, start, end); long text = GTK.gtk_text_buffer_get_text(bufferHandle, start, end, true); long layout = GTK.gtk_widget_create_pango_layout(handle, text); OS.g_free(text); OS.pango_layout_set_width(layout, wHint * OS.PANGO_SCALE); OS.pango_layout_get_pixel_size(layout, w, h); OS.g_object_unref(layout); } int width = w[0]; int height = h[0]; if ((style & SWT.SINGLE) != 0 && message.length() > 0) { byte[] buffer = Converter.wcsToMbcs(message, true); long layout = GTK.gtk_widget_create_pango_layout(handle, buffer); Arrays.fill(buffer, (byte) 0); OS.pango_layout_get_pixel_size(layout, w, h); OS.g_object_unref(layout); width = Math.max(width, w[0]); } if ((style & SWT.SEARCH) != 0) { // GtkSearchEntry have more padding than GtkEntry GtkBorder tmp = new GtkBorder(); long context = GTK.gtk_widget_get_style_context(handle); int state_flag = GTK.GTK_VERSION < OS.VERSION(3, 18, 0) ? GTK.GTK_STATE_FLAG_NORMAL : GTK.gtk_widget_get_state_flags(handle); gtk_style_context_get_padding(context, state_flag, tmp); width += tmp.left + tmp.right; } if (width == 0) width = DEFAULT_WIDTH; if (height == 0) height = DEFAULT_HEIGHT; width = wHint == SWT.DEFAULT ? width : wHint; height = hHint == SWT.DEFAULT ? height : hHint; Rectangle trim = computeTrimInPixels(0, 0, width, height); return new Point(trim.width, trim.height); } @Override Rectangle computeTrimInPixels(int x, int y, int width, int height) { checkWidget(); Rectangle trim = super.computeTrimInPixels(x, y, width, height); int xborder = 0, yborder = 0; if ((style & SWT.SINGLE) != 0) { GtkBorder tmp = new GtkBorder(); long context = GTK.gtk_widget_get_style_context(handle); int state_flag = GTK.GTK_VERSION < OS.VERSION(3, 18, 0) ? GTK.GTK_STATE_FLAG_NORMAL : GTK.gtk_widget_get_state_flags(handle); gtk_style_context_get_padding(context, state_flag, tmp); trim.x -= tmp.left; trim.y -= tmp.top; trim.width += tmp.left + tmp.right; if (tmp.bottom == 0 && tmp.top == 0) { Point widthNative = computeNativeSize(handle, trim.width, SWT.DEFAULT, true); trim.height = widthNative.y; } else { trim.height += tmp.top + tmp.bottom; } if ((style & SWT.BORDER) != 0) { int state = GTK.GTK_VERSION < OS.VERSION(3, 18, 0) ? GTK.GTK_STATE_FLAG_NORMAL : GTK.gtk_widget_get_state_flags(handle); gtk_style_context_get_border(context, state, tmp); trim.x -= tmp.left; trim.y -= tmp.top; trim.width += tmp.left + tmp.right; trim.height += tmp.top + tmp.bottom; } GdkRectangle icon_area = new GdkRectangle(); GTK.gtk_entry_get_icon_area(handle, GTK.GTK_ENTRY_ICON_PRIMARY, icon_area); trim.x -= icon_area.width; trim.width += icon_area.width; GTK.gtk_entry_get_icon_area(handle, GTK.GTK_ENTRY_ICON_SECONDARY, icon_area); trim.width += icon_area.width; } else { int borderWidth = gtk_container_get_border_width_or_margin(handle); xborder += borderWidth; yborder += borderWidth; } /* * Focus line width is done via CSS in GTK4, and does not contribute * to the size of the widget. */ if (!GTK.GTK4) { int[] property = new int[1]; GTK.gtk_widget_style_get(handle, OS.interior_focus, property, 0); if (property[0] == 0) { GTK.gtk_widget_style_get(handle, OS.focus_line_width, property, 0); xborder += property[0]; yborder += property[0]; } } trim.x -= xborder; trim.y -= yborder; trim.width += 2 * xborder; trim.height += 2 * yborder; trim.width += SPACE_FOR_CURSOR; return new Rectangle(trim.x, trim.y, trim.width, trim.height); } /** * Copies the selected text. * <p> * The current selection is copied to the clipboard. * </p> * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void copy() { checkWidget(); if ((style & SWT.SINGLE) != 0) { GTK.gtk_editable_copy_clipboard(handle); } else { long clipboard = GTK.GTK4 ? GDK.gdk_display_get_clipboard(GDK.gdk_display_get_default()) : GTK.gtk_clipboard_get(GDK.GDK_NONE); ; clearSegments(true); GTK.gtk_text_buffer_copy_clipboard(bufferHandle, clipboard); applySegments(); } } /** * Cuts the selected text. * <p> * The current selection is first copied to the * clipboard and then deleted from the widget. * </p> * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void cut() { checkWidget(); if ((style & SWT.SINGLE) != 0) { GTK.gtk_editable_cut_clipboard(handle); } else { long clipboard = GTK.GTK4 ? GDK.gdk_display_get_clipboard(GDK.gdk_display_get_default()) : GTK.gtk_clipboard_get(GDK.GDK_NONE); ; clearSegments(true); GTK.gtk_text_buffer_cut_clipboard(bufferHandle, clipboard, GTK.gtk_text_view_get_editable(handle)); applySegments(); } } char[] deprocessText(char[] text, int start, int end) { if (text == null) return new char[0]; if (start < 0) start = 0; int length = text.length; if (end == -1) end = start + length; if (segments != null && end > segments[0]) { int nSegments = segments.length; if (nSegments > 0 && start <= segments[nSegments - 1]) { int nLeadSegments = 0; while (start - nLeadSegments > segments[nLeadSegments]) nLeadSegments++; int segmentCount = nLeadSegments; for (int i = start; i < end; i++) { if (segmentCount < nSegments && i - segmentCount == segments[segmentCount]) { ++segmentCount; } else { text[i - segmentCount + nLeadSegments - start] = text[i - start]; } } length = end - start - segmentCount + nLeadSegments; } } if (start != 0 || end != start + length) { char[] newText = new char[length]; System.arraycopy(text, 0, newText, 0, length); return newText; } return text; } @Override GdkRGBA defaultBackground() { return display.getSystemColor(SWT.COLOR_LIST_BACKGROUND).handle; } @Override void deregister() { super.deregister(); if (bufferHandle != 0) display.removeWidget(bufferHandle); long imContext = imContext(); if (imContext != 0) display.removeWidget(imContext); } @Override boolean dragDetect(int x, int y, boolean filter, boolean dragOnTimeout, boolean[] consume) { /** * Drag detection on GTKText will not be done in SWT, but fully handled by GTK side. * Let GTK handle the DnD logic as it is inherent to that widget as of GTK3.14 and cannot * be removed without overriding it. It is better to take the signal from GTK and send it * back to SWT instead. */ boolean isDraggable = (GTK.GTK_VERSION < OS.VERSION(3, 14, 0)) ? insideBlockSelection(x, y) : false; if (filter) { if (isDraggable && super.dragDetect(x, y, filter, dragOnTimeout, consume)) { if (consume != null) consume[0] = true; return true; } } return false; } @Override long eventWindow() { return paintWindow(); } @Override boolean filterKey(int keyval, long event) { int time = GDK.gdk_event_get_time(event); if (time != lastEventTime) { lastEventTime = time; long imContext = imContext(); if (imContext != 0) { return GTK.gtk_im_context_filter_keypress(imContext, event); } } gdkEventKey = event; return false; } void fixIM() { /* * The IM filter has to be called one time for each key press event. * When the IM is open the key events are duplicated. The first event * is filtered by SWT and the second event is filtered by GTK. In some * cases the GTK handler does not run (the widget is destroyed, the * application code consumes the event, etc), for these cases the IM * filter has to be called by SWT. */ if (gdkEventKey != 0 && gdkEventKey != -1) { long imContext = imContext(); if (imContext != 0) { GTK.gtk_im_context_filter_keypress(imContext, gdkEventKey); gdkEventKey = -1; return; } } gdkEventKey = 0; } @Override int getBorderWidthInPixels() { checkWidget(); if ((style & SWT.MULTI) != 0) return super.getBorderWidthInPixels(); if ((this.style & SWT.BORDER) != 0) { return getThickness(handle).x; } return 0; } /** * Returns the line number of the caret. * <p> * The line number of the caret is returned. * </p> * * @return the line number * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public int getCaretLineNumber() { checkWidget(); if ((style & SWT.SINGLE) != 0) return 0; byte[] position = new byte[ITER_SIZEOF]; long mark = GTK.gtk_text_buffer_get_insert(bufferHandle); GTK.gtk_text_buffer_get_iter_at_mark(bufferHandle, position, mark); return GTK.gtk_text_iter_get_line(position); } /** * Returns a point describing the location of the caret relative * to the receiver. * * @return a point, the location of the caret * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public Point getCaretLocation() { checkWidget(); return DPIUtil.autoScaleDown(getCaretLocationInPixels()); } Point getCaretLocationInPixels() { checkWidget(); if ((style & SWT.SINGLE) != 0) { int index = GTK.gtk_editable_get_position(handle); index = GTK.gtk_entry_text_index_to_layout_index(handle, index); int[] offset_x = new int[1], offset_y = new int[1]; GTK.gtk_entry_get_layout_offsets(handle, offset_x, offset_y); long layout = GTK.gtk_entry_get_layout(handle); PangoRectangle pos = new PangoRectangle(); OS.pango_layout_index_to_pos(layout, index, pos); int x = offset_x[0] + OS.PANGO_PIXELS(pos.x) - getBorderWidthInPixels(); int y = offset_y[0] + OS.PANGO_PIXELS(pos.y); return new Point(x, y); } byte[] position = new byte[ITER_SIZEOF]; long mark = GTK.gtk_text_buffer_get_insert(bufferHandle); GTK.gtk_text_buffer_get_iter_at_mark(bufferHandle, position, mark); GdkRectangle rect = new GdkRectangle(); GTK.gtk_text_view_get_iter_location(handle, position, rect); int[] x = new int[1]; int[] y = new int[1]; GTK.gtk_text_view_buffer_to_window_coords(handle, GTK.GTK_TEXT_WINDOW_TEXT, rect.x, rect.y, x, y); return new Point(x[0], y[0]); } /** * Returns the character position of the caret. * <p> * Indexing is zero based. * </p> * * @return the position of the caret * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public int getCaretPosition() { checkWidget(); int result; if ((style & SWT.SINGLE) != 0) { long ptr = GTK.gtk_entry_get_text(handle); result = (int) OS.g_utf8_offset_to_utf16_offset(ptr, GTK.gtk_editable_get_position(handle)); } else { byte[] position = new byte[ITER_SIZEOF]; long mark = GTK.gtk_text_buffer_get_insert(bufferHandle); GTK.gtk_text_buffer_get_iter_at_mark(bufferHandle, position, mark); byte[] zero = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, zero, 0); long ptr = GTK.gtk_text_buffer_get_text(bufferHandle, zero, position, true); result = (int) OS.g_utf8_offset_to_utf16_offset(ptr, GTK.gtk_text_iter_get_offset(position)); OS.g_free(ptr); } return untranslateOffset(result); } /** * Returns the number of characters. * * @return number of characters in the widget * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public int getCharCount() { checkWidget(); int result; if ((style & SWT.SINGLE) != 0) { long ptr = GTK.gtk_entry_get_text(handle); result = (int) OS.g_utf16_strlen(ptr, -1); } else { byte[] startIter = new byte[ITER_SIZEOF]; byte[] endIter = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_bounds(bufferHandle, startIter, endIter); long ptr = GTK.gtk_text_buffer_get_text(bufferHandle, startIter, endIter, true); result = (int) OS.g_utf16_strlen(ptr, -1); OS.g_free(ptr); } return untranslateOffset(result); } /** * Returns the double click enabled flag. * <p> * The double click flag enables or disables the * default action of the text widget when the user * double clicks. * </p> * * @return whether or not double click is enabled * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public boolean getDoubleClickEnabled() { checkWidget(); return doubleClick; } /** * Returns the echo character. * <p> * The echo character is the character that is * displayed when the user enters text or the * text is changed by the programmer. * </p> * * @return the echo character * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see #setEchoChar */ public char getEchoChar() { checkWidget(); if ((style & SWT.SINGLE) != 0) { if (!GTK.gtk_entry_get_visibility(handle)) { return GTK.gtk_entry_get_invisible_char(handle); } } return '\0'; } /** * Returns the editable state. * * @return whether or not the receiver is editable * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public boolean getEditable() { checkWidget(); if ((style & SWT.SINGLE) != 0) { return GTK.gtk_editable_get_editable(handle); } return GTK.gtk_text_view_get_editable(handle); } /** * Returns the number of lines. * * @return the number of lines in the widget * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public int getLineCount() { checkWidget(); if ((style & SWT.SINGLE) != 0) return 1; return GTK.gtk_text_buffer_get_line_count(bufferHandle); } /** * Returns the line delimiter. * * @return a string that is the line delimiter * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see #DELIMITER */ public String getLineDelimiter() { checkWidget(); return "\n"; } /** * Returns the height of a line. * * @return the height of a row of text * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public int getLineHeight() { checkWidget(); return fontHeight(getFontDescription(), handle); } /** * Returns the widget message. The message text is displayed * as a hint for the user, indicating the purpose of the field. * <p> * Typically this is used in conjunction with <code>SWT.SEARCH</code>. * </p> * * @return the widget message * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @since 3.3 */ public String getMessage() { checkWidget(); return message; } /** * Returns the orientation of the receiver, which will be one of the * constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>. * * @return the orientation style * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @since 2.1.2 */ @Override public int getOrientation() { return super.getOrientation(); } /*public*/ int getPosition(Point point) { checkWidget(); if (point == null) error(SWT.ERROR_NULL_ARGUMENT); int position = -1; if ((style & SWT.SINGLE) != 0) { int[] index = new int[1]; int[] trailing = new int[1]; long layout = GTK.gtk_entry_get_layout(handle); OS.pango_layout_xy_to_index(layout, point.x * OS.PANGO_SCALE, point.y * OS.PANGO_SCALE, index, trailing); long ptr = OS.pango_layout_get_text(layout); position = (int) OS.g_utf16_pointer_to_offset(ptr, ptr + index[0]) + trailing[0]; } else { byte[] p = new byte[ITER_SIZEOF]; GTK.gtk_text_view_get_iter_at_location(handle, p, point.x, point.y); byte[] zero = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, zero, 0); long ptr = GTK.gtk_text_buffer_get_text(bufferHandle, zero, p, true); position = (int) OS.g_utf8_offset_to_utf16_offset(ptr, GTK.gtk_text_iter_get_offset(p)); OS.g_free(ptr); } return untranslateOffset(position); } /** * Returns a <code>Point</code> whose x coordinate is the * character position representing the start of the selected * text, and whose y coordinate is the character position * representing the end of the selection. An "empty" selection * is indicated by the x and y coordinates having the same value. * <p> * Indexing is zero based. The range of a selection is from * 0..N where N is the number of characters in the widget. * </p> * * @return a point representing the selection start and end * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public Point getSelection() { checkWidget(); Point selection; if ((style & SWT.SINGLE) != 0) { int[] start = new int[1]; int[] end = new int[1]; GTK.gtk_editable_get_selection_bounds(handle, start, end); long ptr = GTK.gtk_entry_get_text(handle); start[0] = (int) OS.g_utf8_offset_to_utf16_offset(ptr, start[0]); end[0] = (int) OS.g_utf8_offset_to_utf16_offset(ptr, end[0]); selection = new Point(start[0], end[0]); } else { byte[] startIter = new byte[ITER_SIZEOF]; byte[] endIter = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_selection_bounds(bufferHandle, startIter, endIter); byte[] zero = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, zero, 0); long ptr = GTK.gtk_text_buffer_get_text(bufferHandle, zero, endIter, true); int start = (int) OS.g_utf8_offset_to_utf16_offset(ptr, GTK.gtk_text_iter_get_offset(startIter)); int end = (int) OS.g_utf8_offset_to_utf16_offset(ptr, GTK.gtk_text_iter_get_offset(endIter)); OS.g_free(ptr); selection = new Point(start, end); } selection.x = untranslateOffset(selection.x); selection.y = untranslateOffset(selection.y); return selection; } /** * Returns the number of selected characters. * * @return the number of selected characters. * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public int getSelectionCount() { checkWidget(); Point selection = getSelection(); return Math.abs(selection.y - selection.x); } /** * Gets the selected text, or an empty string if there is no current selection. * * @return the selected text * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public String getSelectionText() { checkWidget(); Point selection = getSelection(); return getText().substring(selection.x, selection.y); } /** * Returns the number of tabs. * <p> * Tab stop spacing is specified in terms of the * space (' ') character. The width of a single * tab stop is the pixel width of the spaces. * </p> * * @return the number of tab characters * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public int getTabs() { checkWidget(); return tabs; } int getTabWidth(int tabs) { byte[] buffer = Converter.wcsToMbcs(" ", true); long layout = GTK.gtk_widget_create_pango_layout(handle, buffer); int[] width = new int[1]; int[] height = new int[1]; OS.pango_layout_get_size(layout, width, height); OS.g_object_unref(layout); return width[0] * tabs; } /** * Returns the widget text. * <p> * The text for a text widget is the characters in the widget, or * an empty string if this has never been set. * </p> * * @return the widget text * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public String getText() { return new String(getTextChars()); } /** * Returns a range of text. Returns an empty string if the * start of the range is greater than the end. * <p> * Indexing is zero based. The range of * a selection is from 0..N-1 where N is * the number of characters in the widget. * </p> * * @param start the start of the range * @param end the end of the range * @return the range of text * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public String getText(int start, int end) { checkWidget(); if (!(start <= end && 0 <= end)) return ""; String str = getText(); int length = str.length(); end = Math.min(end, length - 1); if (start > end) return ""; start = Math.max(0, start); /* * NOTE: The current implementation uses substring () * which can reference a potentially large character * array. */ return str.substring(start, end + 1); } /** * Returns the widget's text as a character array. * <p> * The text for a text widget is the characters in the widget, or * a zero-length array if this has never been set. * </p> * <p> * Note: Use this API to prevent the text from being written into a String * object whose lifecycle is outside of your control. This can help protect * the text, for example, when the widget is used as a password field. * However, the text can't be protected if an {@link SWT#Segments} or * {@link SWT#Verify} listener has been added to the widget. * </p> * * @return a character array that contains the widget's text * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see #setTextChars(char[]) * * @since 3.7 */ public char[] getTextChars() { checkWidget(); long address; if ((style & SWT.SINGLE) != 0) { address = GTK.gtk_entry_get_text(handle); } else { byte[] start = new byte[ITER_SIZEOF]; byte[] end = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_bounds(bufferHandle, start, end); address = GTK.gtk_text_buffer_get_text(bufferHandle, start, end, true); } if (address == 0) return new char[0]; int length = C.strlen(address); byte[] buffer = new byte[length]; C.memmove(buffer, address, length); if ((style & SWT.MULTI) != 0) OS.g_free(address); char[] result = Converter.mbcsToWcs(buffer); Arrays.fill(buffer, (byte) 0); if (segments != null) { result = deprocessText(result, 0, -1); } return result; } /** * Returns the maximum number of characters that the receiver is capable of holding. * <p> * If this has not been changed by <code>setTextLimit()</code>, * it will be the constant <code>Text.LIMIT</code>. * </p> * * @return the text limit * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see #LIMIT */ public int getTextLimit() { checkWidget(); if ((style & SWT.MULTI) != 0) return LIMIT; int limit = GTK.gtk_entry_get_max_length(handle); return limit == 0 ? 0xFFFF : untranslateOffset(limit); } /** * Returns the zero-relative index of the line which is currently * at the top of the receiver. * <p> * This index can change when lines are scrolled or new lines are added or removed. * </p> * * @return the index of the top line * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public int getTopIndex() { checkWidget(); if ((style & SWT.SINGLE) != 0) return 0; byte[] position = new byte[ITER_SIZEOF]; /* * Feature in GTK: GtkTextView widgets are subject to line validation * which happens during idle. This causes GtkTextIter to not update quickly * enough when changes are added to the text buffer. The fix is to use a * GtkTextMark to track the precise index, then convert it back to a * GtkTextIter when getTopIndex() is called. See bug 487467. * * NOTE: to cover cases where getTopIndex() is called without setTopIndex() * being called, we fetch the current GtkAdjustment value and cache it for * comparison. In getTopIndex() we compare the current value with the cached * one to see if the user has scrolled/moved the viewport using the GUI. * If so, we use the old method of fetching the top index. */ long vAdjustment = GTK.gtk_scrollable_get_vadjustment(handle); currentAdjustment = GTK.gtk_adjustment_get_value(vAdjustment); if (cachedAdjustment == currentAdjustment) { // If indexMark is 0, fetch topIndex using the old method if (indexMark != 0) { GTK.gtk_text_buffer_get_iter_at_mark(bufferHandle, position, indexMark); return GTK.gtk_text_iter_get_line(position); } } GdkRectangle rect = new GdkRectangle(); GTK.gtk_text_view_get_visible_rect(handle, rect); GTK.gtk_text_view_get_line_at_y(handle, position, rect.y, null); return GTK.gtk_text_iter_get_line(position); } /** * Returns the top SWT logical point. * <p> * The top point is the SWT logical point position of the line * that is currently at the top of the widget. On * some platforms, a text widget can be scrolled by * points instead of lines so that a partial line * is displayed at the top of the widget. * </p><p> * The top SWT logical point changes when the widget is scrolled. * The top SWT logical point does not include the widget trimming. * </p> * * @return the SWT logical point position of the top line * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public int getTopPixel() { checkWidget(); return DPIUtil.autoScaleDown(getTopPixelInPixels()); } int getTopPixelInPixels() { checkWidget(); if ((style & SWT.SINGLE) != 0) return 0; byte[] position = new byte[ITER_SIZEOF]; GdkRectangle rect = new GdkRectangle(); GTK.gtk_text_view_get_visible_rect(handle, rect); int[] lineTop = new int[1]; GTK.gtk_text_view_get_line_at_y(handle, position, rect.y, lineTop); return lineTop[0]; } @Override long gtk_activate(long widget) { sendSelectionEvent(SWT.DefaultSelection); return 0; } @Override long gtk_button_press_event(long widget, long event) { long result; result = super.gtk_button_press_event(widget, event); if (result != 0) return result; int eventType = GDK.gdk_event_get_event_type(event); if (!doubleClick) { switch (eventType) { case GDK.GDK_2BUTTON_PRESS: case GDK.GDK_3BUTTON_PRESS: return 1; } } return result; } @Override long gtk_changed(long widget) { /* * Feature in GTK. When the user types, GTK positions * the caret after sending the changed signal. This * means that application code that attempts to position * the caret during a changed signal will fail. The fix * is to post the modify event when the user is typing. */ boolean keyPress = false; long eventPtr = GTK.gtk_get_current_event(); if (eventPtr != 0) { int eventType = GDK.gdk_event_get_event_type(eventPtr); eventType = fixGdkEventTypeValues(eventType); switch (eventType) { case GDK.GDK_KEY_PRESS: keyPress = true; break; } gdk_event_free(eventPtr); } if (keyPress) { postEvent(SWT.Modify); } else { sendEvent(SWT.Modify); } if ((style & SWT.SEARCH) != 0) { if ((style & SWT.ICON_CANCEL) == 0) { // Default GtkSearchEntry shows "clear" icon when there is text, manually revert this // when "cancel" icon style is not set GTK.gtk_entry_set_icon_from_icon_name(handle, GTK.GTK_ENTRY_ICON_SECONDARY, null); } } return 0; } @Override long gtk_commit(long imContext, long text) { if (text == 0) return 0; if ((style & SWT.SINGLE) != 0) { if (!GTK.gtk_editable_get_editable(handle)) return 0; } int length = C.strlen(text); if (length == 0) return 0; byte[] buffer = new byte[length]; C.memmove(buffer, text, length); char[] chars = Converter.mbcsToWcs(buffer); Arrays.fill(buffer, (byte) 0); char[] newChars = sendIMKeyEvent(SWT.KeyDown, 0, chars); if (newChars == null) return 0; /* * Feature in GTK. For a GtkEntry, during the insert-text signal, * GTK allows the programmer to change only the caret location, * not the selection. If the programmer changes the selection, * the new selection is lost. The fix is to detect a selection * change and set it after the insert-text signal has completed. */ fixStart = fixEnd = -1; OS.g_signal_handlers_block_matched(imContext, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, COMMIT); int id = OS.g_signal_lookup(OS.commit, GTK.gtk_im_context_get_type()); int mask = OS.G_SIGNAL_MATCH_DATA | OS.G_SIGNAL_MATCH_ID; OS.g_signal_handlers_unblock_matched(imContext, mask, id, 0, 0, 0, handle); if (newChars == chars) { OS.g_signal_emit_by_name(imContext, OS.commit, text); } else { buffer = Converter.wcsToMbcs(newChars, true); OS.g_signal_emit_by_name(imContext, OS.commit, buffer); Arrays.fill(buffer, (byte) 0); } OS.g_signal_handlers_unblock_matched(imContext, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, COMMIT); OS.g_signal_handlers_block_matched(imContext, mask, id, 0, 0, 0, handle); if ((style & SWT.SINGLE) != 0) { if (fixStart != -1 && fixEnd != -1) { GTK.gtk_editable_set_position(handle, fixStart); GTK.gtk_editable_select_region(handle, fixStart, fixEnd); } } fixStart = fixEnd = -1; return 0; } @Override long gtk_delete_range(long widget, long iter1, long iter2) { if (!hooks(SWT.Verify) && !filters(SWT.Verify)) return 0; byte[] startIter = new byte[ITER_SIZEOF]; byte[] endIter = new byte[ITER_SIZEOF]; C.memmove(startIter, iter1, startIter.length); C.memmove(endIter, iter2, endIter.length); int start = GTK.gtk_text_iter_get_offset(startIter); int end = GTK.gtk_text_iter_get_offset(endIter); byte[] zero = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, zero, 0); long ptr = GTK.gtk_text_buffer_get_text(bufferHandle, zero, endIter, true); start = (int) OS.g_utf8_offset_to_utf16_offset(ptr, start); end = (int) OS.g_utf8_offset_to_utf16_offset(ptr, end); OS.g_free(ptr); String newText = verifyText("", start, end); if (newText == null) { /* Remember the selection when the text was deleted */ GTK.gtk_text_buffer_get_selection_bounds(bufferHandle, startIter, endIter); start = GTK.gtk_text_iter_get_offset(startIter); end = GTK.gtk_text_iter_get_offset(endIter); if (start != end) { fixStart = start; fixEnd = end; } OS.g_signal_stop_emission_by_name(bufferHandle, OS.delete_range); } else { if (newText.length() > 0) { byte[] buffer = Converter.wcsToMbcs(newText, false); OS.g_signal_handlers_block_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_block_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_RANGE); GTK.gtk_text_buffer_delete(bufferHandle, startIter, endIter); OS.g_signal_handlers_unblock_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_RANGE); OS.g_signal_handlers_unblock_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_block_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT); GTK.gtk_text_buffer_insert(bufferHandle, startIter, buffer, buffer.length); OS.g_signal_handlers_unblock_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT); OS.g_signal_stop_emission_by_name(bufferHandle, OS.delete_range); Arrays.fill(buffer, (byte) 0); } } return 0; } @Override long gtk_delete_text(long widget, long start_pos, long end_pos) { if (!hooks(SWT.Verify) && !filters(SWT.Verify)) return 0; long ptr = GTK.gtk_entry_get_text(handle); if (end_pos == -1) end_pos = OS.g_utf8_strlen(ptr, -1); int start = (int) OS.g_utf8_offset_to_utf16_offset(ptr, start_pos); int end = (int) OS.g_utf8_offset_to_utf16_offset(ptr, end_pos); String newText = verifyText("", start, end); if (newText == null) { /* Remember the selection when the text was deleted */ int[] newStart = new int[1], newEnd = new int[1]; GTK.gtk_editable_get_selection_bounds(handle, newStart, newEnd); if (newStart[0] != newEnd[0]) { fixStart = newStart[0]; fixEnd = newEnd[0]; } OS.g_signal_stop_emission_by_name(handle, OS.delete_text); } else { if (newText.length() > 0) { int[] pos = new int[1]; pos[0] = (int) end_pos; byte[] buffer = Converter.wcsToMbcs(newText, false); OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); GTK.gtk_editable_insert_text(handle, buffer, buffer.length, pos); OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); GTK.gtk_editable_set_position(handle, pos[0]); Arrays.fill(buffer, (byte) 0); } } return 0; } @Override long gtk_event_after(long widget, long gdkEvent) { if (cursor != null) setCursor(cursor.handle); /* * Feature in GTK. The gtk-entry-select-on-focus property is a global * setting. Return it to its default value after the GtkEntry has done * its focus in processing so that other widgets (such as the combo) * use the correct value. */ if ((style & SWT.SINGLE) != 0 && display.entrySelectOnFocus) { int eventType = GDK.gdk_event_get_event_type(gdkEvent); eventType = fixGdkEventTypeValues(eventType); switch (eventType) { case GDK.GDK_FOCUS_CHANGE: boolean[] focusIn = new boolean[1]; if (GTK.GTK4) { GDK.gdk_event_get_focus_in(gdkEvent, focusIn); } else { GdkEventFocus gdkEventFocus = new GdkEventFocus(); OS.memmove(gdkEventFocus, gdkEvent, GdkEventFocus.sizeof); focusIn[0] = gdkEventFocus.in != 0; } if (focusIn[0]) { long settings = GTK.gtk_settings_get_default(); OS.g_object_set(settings, GTK.gtk_entry_select_on_focus, true, 0); } break; } } return super.gtk_event_after(widget, gdkEvent); } @Override long gtk_draw(long widget, long cairo) { if ((state & OBSCURED) != 0) return 0; long result = super.gtk_draw(widget, cairo); return result; } @Override boolean mustBeVisibleOnInitBounds() { // Bug 542940: Workaround to avoid NPE, make Text visible on initialization return true; } @Override long gtk_focus_out_event(long widget, long event) { fixIM(); return super.gtk_focus_out_event(widget, event); } @Override long gtk_grab_focus(long widget) { long result = super.gtk_grab_focus(widget); /* * Feature in GTK. GtkEntry widgets select their text on focus in, * clearing the previous selection. This behavior is controlled by * the gtk-entry-select-on-focus property. The fix is to disable * this property when a GtkEntry is given focus and restore it after * the entry has done focus in processing. */ if ((style & SWT.SINGLE) != 0 && display.entrySelectOnFocus) { long settings = GTK.gtk_settings_get_default(); OS.g_object_set(settings, GTK.gtk_entry_select_on_focus, false, 0); } return result; } @Override long gtk_icon_release(long widget, long icon_pos, long event) { Event e = new Event(); if (icon_pos == GTK.GTK_ENTRY_ICON_PRIMARY) { e.detail = SWT.ICON_SEARCH; } else { e.detail = SWT.ICON_CANCEL; } sendSelectionEvent(SWT.DefaultSelection, e, false); return 0; } @Override long gtk_insert_text(long widget, long new_text, long new_text_length, long position) { if (!hooks(SWT.Verify) && !filters(SWT.Verify)) return 0; if (new_text == 0 || new_text_length == 0) return 0; byte[] buffer = new byte[(int) new_text_length]; C.memmove(buffer, new_text, buffer.length); String oldText = new String(Converter.mbcsToWcs(buffer)); int[] pos = new int[1]; C.memmove(pos, position, 4); long ptr = GTK.gtk_entry_get_text(handle); if (pos[0] == -1) pos[0] = (int) OS.g_utf8_strlen(ptr, -1); /* Use the selection when the text was deleted */ int start = pos[0], end = pos[0]; if (fixStart != -1 && fixEnd != -1) { start = pos[0] = fixStart; end = fixEnd; fixStart = fixEnd = -1; } start = (int) OS.g_utf8_offset_to_utf16_offset(ptr, start); end = (int) OS.g_utf8_offset_to_utf16_offset(ptr, end); String newText = verifyText(oldText, start, end); if (newText != oldText && handle != 0) { int[] newStart = new int[1], newEnd = new int[1]; GTK.gtk_editable_get_selection_bounds(handle, newStart, newEnd); if (newText != null) { if (newStart[0] != newEnd[0]) { OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT); OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); GTK.gtk_editable_delete_selection(handle); OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT); OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); } byte[] buffer3 = Converter.wcsToMbcs(newText, false); OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); GTK.gtk_editable_insert_text(handle, buffer3, buffer3.length, pos); OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); newStart[0] = newEnd[0] = pos[0]; } pos[0] = newEnd[0]; if (newStart[0] != newEnd[0]) { fixStart = newStart[0]; fixEnd = newEnd[0]; } C.memmove(position, pos, 4); OS.g_signal_stop_emission_by_name(handle, OS.insert_text); } return 0; } @Override long gtk_key_press_event(long widget, long event) { boolean handleSegments = false, segmentsCleared = false; if (hooks(SWT.Segments) || filters(SWT.Segments)) { int length; int[] state = new int[1]; GDK.gdk_event_get_state(event, state); if (GTK.GTK4) { long[] eventString = new long[1]; GDK.gdk_event_get_string(event, eventString); length = (int) OS.g_utf16_strlen(eventString[0], -1); } else { GdkEventKey gdkEvent = new GdkEventKey(); OS.memmove(gdkEvent, event, GdkEventKey.sizeof); length = gdkEvent.length; } if (length > 0 && (state[0] & (GDK.GDK_MOD1_MASK | GDK.GDK_CONTROL_MASK)) == 0) { handleSegments = true; if (segments != null) { clearSegments(true); segmentsCleared = true; } } } long result = super.gtk_key_press_event(widget, event); if (result != 0) fixIM(); if (gdkEventKey == -1) result = 1; gdkEventKey = 0; if (handleSegments && (result != 0 || segmentsCleared)) { applySegments(); } return result; } @Override long gtk_populate_popup(long widget, long menu) { if ((style & SWT.RIGHT_TO_LEFT) != 0) { GTK.gtk_widget_set_direction(menu, GTK.GTK_TEXT_DIR_RTL); GTK.gtk_container_forall(menu, display.setDirectionProc, GTK.GTK_TEXT_DIR_RTL); } return 0; } @Override long gtk_text_buffer_insert_text(long widget, long iter, long text, long length) { if (!hooks(SWT.Verify) && !filters(SWT.Verify)) return 0; byte[] position = new byte[ITER_SIZEOF]; C.memmove(position, iter, position.length); /* Use the selection when the text was deleted */ int start = GTK.gtk_text_iter_get_offset(position), end = start; if (fixStart != -1 && fixEnd != -1) { start = fixStart; end = fixEnd; fixStart = fixEnd = -1; } byte[] zero = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, zero, 0); long ptr = GTK.gtk_text_buffer_get_text(bufferHandle, zero, position, true); start = (int) OS.g_utf8_offset_to_utf16_offset(ptr, start); end = (int) OS.g_utf8_offset_to_utf16_offset(ptr, end); OS.g_free(ptr); byte[] buffer = new byte[(int) length]; C.memmove(buffer, text, buffer.length); String oldText = new String(Converter.mbcsToWcs(buffer)); String newText = verifyText(oldText, start, end); if (newText == null) { OS.g_signal_stop_emission_by_name(bufferHandle, OS.insert_text); } else { if (newText != oldText) { byte[] buffer1 = Converter.wcsToMbcs(newText, false); OS.g_signal_handlers_block_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT); GTK.gtk_text_buffer_insert(bufferHandle, iter, buffer1, buffer1.length); OS.g_signal_handlers_unblock_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT); OS.g_signal_stop_emission_by_name(bufferHandle, OS.insert_text); } } return 0; } @Override void hookEvents() { super.hookEvents(); if ((style & SWT.SINGLE) != 0) { OS.g_signal_connect_closure(handle, OS.changed, display.getClosure(CHANGED), true); OS.g_signal_connect_closure(handle, OS.insert_text, display.getClosure(INSERT_TEXT), false); OS.g_signal_connect_closure(handle, OS.delete_text, display.getClosure(DELETE_TEXT), false); OS.g_signal_connect_closure(handle, OS.activate, display.getClosure(ACTIVATE), false); OS.g_signal_connect_closure(handle, OS.grab_focus, display.getClosure(GRAB_FOCUS), false); OS.g_signal_connect_closure(handle, OS.populate_popup, display.getClosure(POPULATE_POPUP), false); if ((style & SWT.SEARCH) != 0) { OS.g_signal_connect_closure(handle, OS.icon_release, display.getClosure(ICON_RELEASE), false); } } else { OS.g_signal_connect_closure(bufferHandle, OS.changed, display.getClosure(CHANGED), false); OS.g_signal_connect_closure(bufferHandle, OS.insert_text, display.getClosure(TEXT_BUFFER_INSERT_TEXT), false); OS.g_signal_connect_closure(bufferHandle, OS.delete_range, display.getClosure(DELETE_RANGE), false); OS.g_signal_connect_closure(handle, OS.populate_popup, display.getClosure(POPULATE_POPUP), false); } long imContext = imContext(); if (imContext != 0) { OS.g_signal_connect_closure(imContext, OS.commit, display.getClosure(COMMIT), false); int id = OS.g_signal_lookup(OS.commit, GTK.gtk_im_context_get_type()); int mask = OS.G_SIGNAL_MATCH_DATA | OS.G_SIGNAL_MATCH_ID; OS.g_signal_handlers_block_matched(imContext, mask, id, 0, 0, 0, handle); } OS.g_signal_connect_closure(handle, OS.backspace, display.getClosure(BACKSPACE), false); OS.g_signal_connect_closure(handle, OS.backspace, display.getClosure(BACKSPACE_INVERSE), true); OS.g_signal_connect_closure(handle, OS.copy_clipboard, display.getClosure(COPY_CLIPBOARD), false); OS.g_signal_connect_closure(handle, OS.copy_clipboard, display.getClosure(COPY_CLIPBOARD_INVERSE), true); OS.g_signal_connect_closure(handle, OS.cut_clipboard, display.getClosure(CUT_CLIPBOARD), false); OS.g_signal_connect_closure(handle, OS.cut_clipboard, display.getClosure(CUT_CLIPBOARD_INVERSE), true); OS.g_signal_connect_closure(handle, OS.paste_clipboard, display.getClosure(PASTE_CLIPBOARD), false); OS.g_signal_connect_closure(handle, OS.paste_clipboard, display.getClosure(PASTE_CLIPBOARD_INVERSE), true); OS.g_signal_connect_closure(handle, OS.delete_from_cursor, display.getClosure(DELETE_FROM_CURSOR), false); OS.g_signal_connect_closure(handle, OS.delete_from_cursor, display.getClosure(DELETE_FROM_CURSOR_INVERSE), true); OS.g_signal_connect_closure(handle, OS.move_cursor, display.getClosure(MOVE_CURSOR), false); OS.g_signal_connect_closure(handle, OS.move_cursor, display.getClosure(MOVE_CURSOR_INVERSE), true); OS.g_signal_connect_closure(handle, OS.direction_changed, display.getClosure(DIRECTION_CHANGED), true); } long imContext() { if (imContext != 0) return imContext; return 0; } private boolean insideBlockSelection(int x, int y) { int start = 0, end = 0; if ((style & SWT.SINGLE) != 0) { int[] s = new int[1], e = new int[1]; GTK.gtk_editable_get_selection_bounds(handle, s, e); start = s[0]; end = e[0]; } else { byte[] s = new byte[ITER_SIZEOF], e = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_selection_bounds(bufferHandle, s, e); start = GTK.gtk_text_iter_get_offset(s); end = GTK.gtk_text_iter_get_offset(e); } if (start != end) { if (end < start) { int temp = end; end = start; start = temp; } int position = -1; if ((style & SWT.SINGLE) != 0) { int[] index = new int[1]; int[] trailing = new int[1]; long layout = GTK.gtk_entry_get_layout(handle); OS.pango_layout_xy_to_index(layout, x * OS.PANGO_SCALE, y * OS.PANGO_SCALE, index, trailing); long ptr = OS.pango_layout_get_text(layout); position = (int) OS.g_utf8_pointer_to_offset(ptr, ptr + index[0]) + trailing[0]; } else { byte[] p = new byte[ITER_SIZEOF]; GTK.gtk_text_view_get_iter_at_location(handle, p, x, y); position = GTK.gtk_text_iter_get_offset(p); } if (start <= position && position < end) { return true; } } return false; } /** * Inserts a string. * <p> * The old selection is replaced with the new text. * </p> * * @param string the string * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the string is <code>null</code></li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void insert(String string) { checkWidget(); if (string == null) error(SWT.ERROR_NULL_ARGUMENT); clearSegments(true); byte[] buffer = Converter.wcsToMbcs(string, false); if ((style & SWT.SINGLE) != 0) { int[] start = new int[1], end = new int[1]; GTK.gtk_editable_get_selection_bounds(handle, start, end); GTK.gtk_editable_delete_selection(handle); GTK.gtk_editable_insert_text(handle, buffer, buffer.length, start); GTK.gtk_editable_set_position(handle, start[0]); } else { byte[] start = new byte[ITER_SIZEOF]; byte[] end = new byte[ITER_SIZEOF]; if (GTK.gtk_text_buffer_get_selection_bounds(bufferHandle, start, end)) { GTK.gtk_text_buffer_delete(bufferHandle, start, end); } GTK.gtk_text_buffer_insert(bufferHandle, start, buffer, buffer.length); GTK.gtk_text_buffer_place_cursor(bufferHandle, start); scrollIfNotVisible(start, null, true); } applySegments(); } /** * Methods that insert or select text should not modify the topIndex * of the viewer. * * To avoid this issue we calculate the visible area, positions of the * topIndex, and the insertion/selection points. If the insertion/selection points * are outside the visible area, then scroll to them. Otherwise do nothing, * which preserves the topIndex. * * @param iter the GtkTextIter representing the insertion/selection point * @param scrollTo the GtkTextIter representing the point to be scrolled to (can be null) * @param insert true if insertion is being performed, false if selection * */ private void scrollIfNotVisible(byte[] iter, byte[] scrollTo, boolean insert) { GdkRectangle rect = new GdkRectangle(); int distanceTopIndex, numLinesVisible, lineHeight; int[] insertionCoordinates = new int[1]; int[] topIndexCoordinates = new int[1]; byte[] indexIter = new byte[ITER_SIZEOF]; // Calculate the visible area GTK.gtk_text_view_get_visible_rect(handle, rect); lineHeight = getLineHeight(); numLinesVisible = rect.height / lineHeight; // Get the coordinates of the insertion/selection point GTK.gtk_text_view_get_line_yrange(handle, iter, insertionCoordinates, null); // If we have a topIndex, calculate whether the insertion/selection point // is in the visible area if (indexMark != 0) { GTK.gtk_text_buffer_get_iter_at_mark(bufferHandle, indexIter, indexMark); GTK.gtk_text_view_get_line_yrange(handle, indexIter, topIndexCoordinates, null); distanceTopIndex = (insertionCoordinates[0] - topIndexCoordinates[0]) / lineHeight; // If it is not in the visible area, scroll to the insertion/selection point if (distanceTopIndex >= numLinesVisible) { if (insert) { long mark = GTK.gtk_text_buffer_get_insert(bufferHandle); GTK.gtk_text_view_scroll_to_mark(handle, mark, 0, true, 0, 0); } else if (scrollTo != null) { GTK.gtk_text_view_scroll_to_iter(handle, scrollTo, 0, true, 0, 0); } } } else { // Set topIndex to 0 and perform visibility calculations based on that topIndexCoordinates[0] = 0; distanceTopIndex = (insertionCoordinates[0] - topIndexCoordinates[0]) / lineHeight; if (distanceTopIndex >= numLinesVisible) { if (scrollTo != null && !insert) { GTK.gtk_text_view_scroll_to_iter(handle, scrollTo, 0, true, 0, 0); } else if (insert) { long mark = GTK.gtk_text_buffer_get_insert(bufferHandle); GTK.gtk_text_view_scroll_to_mark(handle, mark, 0, true, 0, 0); } } } } @Override long paintWindow() { if ((style & SWT.SINGLE) != 0) { long window = super.paintWindow(); long children = GDK.gdk_window_get_children(window); if (children != 0) { /* * When search or cancel icons are added to Text, those * icon window(s) are added to the beginning of the list. * In order to always return the correct window for Text, * browse to the end of the list. */ do { window = OS.g_list_data(children); } while ((children = OS.g_list_next(children)) != 0); } OS.g_list_free(children); return window; } GTK.gtk_widget_realize(handle); // TODO: this function has been removed on GTK4 return GTK.gtk_text_view_get_window(handle, GTK.GTK_TEXT_WINDOW_TEXT); } @Override long paintSurface() { if ((style & SWT.SINGLE) != 0) { long surface = super.paintSurface(); long children = GDK.gdk_surface_get_children(surface); if (children != 0) { /* * When search or cancel icons are added to Text, those * icon window(s) are added to the beginning of the list. * In order to always return the correct window for Text, * browse to the end of the list. */ do { surface = OS.g_list_data(children); } while ((children = OS.g_list_next(children)) != 0); } OS.g_list_free(children); return surface; } return 0; } /** * Pastes text from clipboard. * <p> * The selected text is deleted from the widget * and new text inserted from the clipboard. * </p> * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void paste() { checkWidget(); if ((style & SWT.SINGLE) != 0) { GTK.gtk_editable_paste_clipboard(handle); } else { long clipboard = GTK.GTK4 ? GDK.gdk_display_get_clipboard(GDK.gdk_display_get_default()) : GTK.gtk_clipboard_get(GDK.GDK_NONE); ; clearSegments(true); GTK.gtk_text_buffer_paste_clipboard(bufferHandle, clipboard, null, GTK.gtk_text_view_get_editable(handle)); applySegments(); } } @Override void register() { super.register(); if (bufferHandle != 0) display.addWidget(bufferHandle, this); long imContext = imContext(); if (imContext != 0) display.addWidget(imContext, this); } @Override void releaseWidget() { super.releaseWidget(); fixIM(); message = null; } /** * Removes the listener from the collection of listeners who will * be notified when the receiver's text is modified. * * @param listener the listener which should no longer be notified * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see ModifyListener * @see #addModifyListener */ public void removeModifyListener(ModifyListener listener) { checkWidget(); if (listener == null) error(SWT.ERROR_NULL_ARGUMENT); if (eventTable == null) return; eventTable.unhook(SWT.Modify, listener); } /** * Removes the listener from the collection of listeners who will * be notified when the receiver's text is modified. * * @param listener the listener which should no longer be notified * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see SegmentEvent * @see SegmentListener * @see #addSegmentListener * * @since 3.8 */ public void removeSegmentListener(SegmentListener listener) { checkWidget(); if (listener == null) error(SWT.ERROR_NULL_ARGUMENT); eventTable.unhook(SWT.Segments, listener); clearSegments(true); applySegments(); } /** * Removes the listener from the collection of listeners who will * be notified when the control is selected by the user. * * @param listener the listener which should no longer be notified * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see SelectionListener * @see #addSelectionListener */ public void removeSelectionListener(SelectionListener listener) { checkWidget(); if (listener == null) error(SWT.ERROR_NULL_ARGUMENT); if (eventTable == null) return; eventTable.unhook(SWT.Selection, listener); eventTable.unhook(SWT.DefaultSelection, listener); } /** * Removes the listener from the collection of listeners who will * be notified when the control is verified. * * @param listener the listener which should no longer be notified * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see VerifyListener * @see #addVerifyListener */ public void removeVerifyListener(VerifyListener listener) { checkWidget(); if (listener == null) error(SWT.ERROR_NULL_ARGUMENT); if (eventTable == null) return; eventTable.unhook(SWT.Verify, listener); } /** * Selects all the text in the receiver. * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void selectAll() { checkWidget(); if ((style & SWT.SINGLE) != 0) { GTK.gtk_editable_select_region(handle, 0, -1); } else { byte[] start = new byte[ITER_SIZEOF]; byte[] end = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, start, 0); GTK.gtk_text_buffer_get_end_iter(bufferHandle, end); GTK.gtk_text_buffer_select_range(bufferHandle, start, end); } } @Override GdkRGBA getContextBackgroundGdkRGBA() { if (background != null && (state & BACKGROUND) != 0) { return background; } return defaultBackground(); } @Override GdkRGBA getContextColorGdkRGBA() { if (GTK.GTK_VERSION >= OS.VERSION(3, 14, 0)) { if (foreground != null) { return foreground; } else { return display.COLOR_WIDGET_FOREGROUND_RGBA; } } else { return super.getContextColorGdkRGBA(); } } @Override void setBackgroundGdkRGBA(long context, long handle, GdkRGBA rgba) { /* Setting the background color overrides the selected background color. * To prevent this, we need to re-set the default. This can be done with CSS * on GTK3.16+, or by using GtkStateFlags as an argument to * gtk_widget_override_background_color() on versions of GTK3 less than 3.16. */ if (rgba == null) { background = defaultBackground(); } else { background = rgba; } GdkRGBA selectedBackground = display.getSystemColor(SWT.COLOR_LIST_SELECTION).handle; GdkRGBA selectedForeground = display.getSystemColor(SWT.COLOR_LIST_SELECTION_TEXT).handle; String css; String properties; String name; String selection = GTK.GTK_VERSION >= OS.VERSION(3, 20, 0) ? " selection" : ":selected"; if ((style & SWT.SINGLE) != 0) { name = GTK.GTK_VERSION >= OS.VERSION(3, 20, 0) ? "entry" : "GtkEntry"; properties = " {background: " + display.gtk_rgba_to_css_string(background) + ";}\n" + name + ":selected {background-color: " + display.gtk_rgba_to_css_string(selectedBackground) + ";}\n" + name + selection + " {color: " + display.gtk_rgba_to_css_string(selectedForeground) + ";}"; } else { name = GTK.GTK_VERSION >= OS.VERSION(3, 20, 0) ? "textview text" : "GtkTextView"; properties = " {background-color: " + display.gtk_rgba_to_css_string(background) + ";}\n" + name + ":selected {background-color: " + display.gtk_rgba_to_css_string(selectedBackground) + ";}\n" + name + selection + " {color: " + display.gtk_rgba_to_css_string(selectedForeground) + ";}"; } css = name + properties; // Cache background color cssBackground = css; // Apply background color and any foreground color String finalCss = display.gtk_css_create_css_color_string(cssBackground, cssForeground, SWT.BACKGROUND); gtk_css_provider_load_from_css(context, finalCss); } @Override void setForegroundGdkRGBA(GdkRGBA rgba) { if (GTK.GTK_VERSION >= OS.VERSION(3, 14, 0)) { foreground = rgba; GdkRGBA toSet = rgba == null ? display.COLOR_WIDGET_FOREGROUND_RGBA : rgba; setForegroundGdkRGBA(handle, toSet); } else { super.setForegroundGdkRGBA(rgba); } } @Override void setCursor(long cursor) { long defaultCursor = 0; if (cursor == 0) { if (GTK.GTK4) { byte[] name = Converter.wcsToMbcs("text", true); defaultCursor = GDK.gdk_cursor_new_from_name(name, 0); } else { defaultCursor = GDK.gdk_cursor_new_for_display(GDK.gdk_display_get_default(), GDK.GDK_XTERM); } } super.setCursor(cursor != 0 ? cursor : defaultCursor); if (cursor == 0) OS.g_object_unref(defaultCursor); } /** * Sets the double click enabled flag. * <p> * The double click flag enables or disables the * default action of the text widget when the user * double clicks. * </p><p> * Note: This operation is a hint and is not supported on * platforms that do not have this concept. * </p> * * @param doubleClick the new double click flag * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void setDoubleClickEnabled(boolean doubleClick) { checkWidget(); this.doubleClick = doubleClick; } /** * Sets the echo character. * <p> * The echo character is the character that is * displayed when the user enters text or the * text is changed by the programmer. Setting * the echo character to '\0' clears the echo * character and redraws the original text. * If for any reason the echo character is invalid, * or if the platform does not allow modification * of the echo character, the default echo character * for the platform is used. * </p> * * @param echo the new echo character * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void setEchoChar(char echo) { checkWidget(); if ((style & SWT.SINGLE) != 0) { GTK.gtk_entry_set_visibility(handle, echo == '\0'); GTK.gtk_entry_set_invisible_char(handle, echo); } } /** * Sets the editable state. * * @param editable the new editable state * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void setEditable(boolean editable) { checkWidget(); style &= ~SWT.READ_ONLY; if (!editable) style |= SWT.READ_ONLY; if ((style & SWT.SINGLE) != 0) { GTK.gtk_editable_set_editable(handle, editable); } else { GTK.gtk_text_view_set_editable(handle, editable); } } @Override void setFontDescription(long font) { super.setFontDescription(font); setTabStops(tabs); } /** * Sets the widget message. The message text is displayed * as a hint for the user, indicating the purpose of the field. * <p> * Typically this is used in conjunction with <code>SWT.SEARCH</code>. * </p> * * @param message the new message * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the message is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @since 3.3 */ public void setMessage(String message) { checkWidget(); if (message == null) error(SWT.ERROR_NULL_ARGUMENT); this.message = message; if ((style & SWT.SINGLE) != 0) { byte[] buffer = Converter.wcsToMbcs(message, true); GTK.gtk_entry_set_placeholder_text(handle, buffer); return; } redraw(false); } /** * Sets the orientation of the receiver, which must be one * of the constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>. * <p> * Note: This operation is a hint and is not supported on * platforms that do not have this concept. * </p> * * @param orientation new orientation style * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @since 2.1.2 */ @Override public void setOrientation(int orientation) { checkWidget(); } /** * Sets the selection. * <p> * Indexing is zero based. The range of * a selection is from 0..N where N is * the number of characters in the widget. * </p><p> * Text selections are specified in terms of * caret positions. In a text widget that * contains N characters, there are N+1 caret * positions, ranging from 0..N. This differs * from other functions that address character * position such as getText () that use the * regular array indexing rules. * </p> * * @param start new caret position * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void setSelection(int start) { checkWidget(); start = translateOffset(start); if ((style & SWT.SINGLE) != 0) { long ptr = GTK.gtk_entry_get_text(handle); start = (int) OS.g_utf16_offset_to_utf8_offset(ptr, start); GTK.gtk_editable_set_position(handle, start); } else { byte[] startIter = new byte[ITER_SIZEOF]; byte[] endIter = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_bounds(bufferHandle, startIter, endIter); long ptr = GTK.gtk_text_buffer_get_text(bufferHandle, startIter, endIter, true); start = (int) OS.g_utf16_offset_to_utf8_offset(ptr, start); OS.g_free(ptr); GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, startIter, start); GTK.gtk_text_buffer_place_cursor(bufferHandle, startIter); scrollIfNotVisible(startIter, startIter, false); } } /** * Sets the selection to the range specified * by the given start and end indices. * <p> * Indexing is zero based. The range of * a selection is from 0..N where N is * the number of characters in the widget. * </p><p> * Text selections are specified in terms of * caret positions. In a text widget that * contains N characters, there are N+1 caret * positions, ranging from 0..N. This differs * from other functions that address character * position such as getText () that use the * usual array indexing rules. * </p> * * @param start the start of the range * @param end the end of the range * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void setSelection(int start, int end) { checkWidget(); start = translateOffset(start); end = translateOffset(end); if ((style & SWT.SINGLE) != 0) { long ptr = GTK.gtk_entry_get_text(handle); start = (int) OS.g_utf16_offset_to_utf8_offset(ptr, start); end = (int) OS.g_utf16_offset_to_utf8_offset(ptr, end); GTK.gtk_editable_set_position(handle, start); GTK.gtk_editable_select_region(handle, start, end); } else { byte[] startIter = new byte[ITER_SIZEOF]; byte[] endIter = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_bounds(bufferHandle, startIter, endIter); long ptr = GTK.gtk_text_buffer_get_text(bufferHandle, startIter, endIter, true); start = (int) OS.g_utf16_offset_to_utf8_offset(ptr, start); end = (int) OS.g_utf16_offset_to_utf8_offset(ptr, end); OS.g_free(ptr); GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, startIter, start); GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, endIter, end); scrollIfNotVisible(startIter, startIter, false); GTK.gtk_text_buffer_select_range(bufferHandle, startIter, endIter); } } /** * Sets the selection to the range specified * by the given point, where the x coordinate * represents the start index and the y coordinate * represents the end index. * <p> * Indexing is zero based. The range of * a selection is from 0..N where N is * the number of characters in the widget. * </p><p> * Text selections are specified in terms of * caret positions. In a text widget that * contains N characters, there are N+1 caret * positions, ranging from 0..N. This differs * from other functions that address character * position such as getText () that use the * usual array indexing rules. * </p> * * @param selection the point * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the point is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void setSelection(Point selection) { checkWidget(); if (selection == null) error(SWT.ERROR_NULL_ARGUMENT); setSelection(selection.x, selection.y); } /** * Sets the number of tabs. * <p> * Tab stop spacing is specified in terms of the * space (' ') character. The width of a single * tab stop is the pixel width of the spaces. * </p> * * @param tabs the number of tabs * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void setTabs(int tabs) { checkWidget(); if (tabs < 0) return; setTabStops(this.tabs = tabs); } void setTabStops(int tabs) { int tabWidth = getTabWidth(tabs); long tabArray = OS.pango_tab_array_new(1, false); OS.pango_tab_array_set_tab(tabArray, 0, OS.PANGO_TAB_LEFT, tabWidth); if ((style & SWT.SINGLE) != 0) { GTK.gtk_entry_set_tabs(handle, tabArray); } else { GTK.gtk_text_view_set_tabs(handle, tabArray); } OS.pango_tab_array_free(tabArray); } /** * Sets the contents of the receiver to the given string. If the receiver has style * SINGLE and the argument contains multiple lines of text, the result of this * operation is undefined and may vary from platform to platform. * <p> * Note: If control characters like '\n', '\t' etc. are used * in the string, then the behavior is platform dependent. * </p> * @param string the new text * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the string is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void setText(String string) { checkWidget(); if (string == null) error(SWT.ERROR_NULL_ARGUMENT); /* * Feature in gtk. When text is set in gtk, separate events are fired for the deletion and * insertion of the text. This is not wrong, but is inconsistent with other platforms. The * fix is to block the firing of these events and fire them ourselves in a consistent manner. */ if (hooks(SWT.Verify) || filters(SWT.Verify)) { string = verifyText(string, 0, getCharCount()); if (string == null) return; } char[] text = new char[string.length()]; string.getChars(0, text.length, text, 0); setText(text); } /** * Sets the contents of the receiver to the characters in the array. If the receiver * has style <code>SWT.SINGLE</code> and the argument contains multiple lines of text * then the result of this operation is undefined and may vary between platforms. * <p> * Note: Use this API to prevent the text from being written into a String * object whose lifecycle is outside of your control. This can help protect * the text, for example, when the widget is used as a password field. * However, the text can't be protected if an {@link SWT#Segments} or * {@link SWT#Verify} listener has been added to the widget. * </p> * * @param text a character array that contains the new text * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the array is null</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see #getTextChars() * * @since 3.7 */ public void setTextChars(char[] text) { checkWidget(); if (text == null) error(SWT.ERROR_NULL_ARGUMENT); /* * Feature in gtk. When text is set in gtk, separate events are fired for the deletion and * insertion of the text. This is not wrong, but is inconsistent with other platforms. The * fix is to block the firing of these events and fire them ourselves in a consistent manner. */ if (hooks(SWT.Verify) || filters(SWT.Verify)) { String string = verifyText(new String(text), 0, getCharCount()); if (string == null) return; text = new char[string.length()]; string.getChars(0, text.length, text, 0); } setText(text); } void setText(char[] text) { clearSegments(false); if ((style & SWT.SINGLE) != 0) { byte[] buffer = Converter.wcsToMbcs(text, true); OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT); OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); GTK.gtk_entry_set_text(handle, buffer); OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT); OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); Arrays.fill(buffer, (byte) 0); } else { byte[] buffer = Converter.wcsToMbcs(text, false); byte[] position = new byte[ITER_SIZEOF]; OS.g_signal_handlers_block_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_block_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_RANGE); OS.g_signal_handlers_block_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT); GTK.gtk_text_buffer_set_text(bufferHandle, buffer, buffer.length); OS.g_signal_handlers_unblock_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_unblock_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_RANGE); OS.g_signal_handlers_unblock_matched(bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT); GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, position, 0); GTK.gtk_text_buffer_place_cursor(bufferHandle, position); long mark = GTK.gtk_text_buffer_get_insert(bufferHandle); GTK.gtk_text_view_scroll_to_mark(handle, mark, 0, true, 0, 0); Arrays.fill(buffer, (byte) 0); } sendEvent(SWT.Modify); if ((style & SWT.SEARCH) != 0) { if ((style & SWT.ICON_CANCEL) == 0) { GTK.gtk_entry_set_icon_from_icon_name(handle, GTK.GTK_ENTRY_ICON_SECONDARY, null); } } applySegments(); } /** * Sets the maximum number of characters that the receiver * is capable of holding to be the argument. * <p> * Instead of trying to set the text limit to zero, consider * creating a read-only text widget. * </p><p> * To reset this value to the default, use <code>setTextLimit(Text.LIMIT)</code>. * Specifying a limit value larger than <code>Text.LIMIT</code> sets the * receiver's limit to <code>Text.LIMIT</code>. * </p> * * @param limit new text limit * * @exception IllegalArgumentException <ul> * <li>ERROR_CANNOT_BE_ZERO - if the limit is zero</li> * </ul> * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> * * @see #LIMIT */ public void setTextLimit(int limit) { checkWidget(); if (limit == 0) error(SWT.ERROR_CANNOT_BE_ZERO); if ((style & SWT.SINGLE) != 0) { GTK.gtk_entry_set_max_length(handle, segments != null ? Math.min(LIMIT, translateOffset(limit)) : limit); } } /** * Sets the zero-relative index of the line which is currently * at the top of the receiver. This index can change when lines * are scrolled or new lines are added and removed. * * @param index the index of the top item * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void setTopIndex(int index) { checkWidget(); if ((style & SWT.SINGLE) != 0) return; byte[] position = new byte[ITER_SIZEOF]; GTK.gtk_text_buffer_get_iter_at_line(bufferHandle, position, index); /* * Feature in GTK: create a new GtkTextMark for the purposes of keeping track of the top index. In getTopIndex() we * can use this without worrying about line validation. See bug 487467. * * We also cache the current GtkAdjustment value for future comparison in getTopIndex(). */ byte[] buffer = Converter.wcsToMbcs("index_mark", true); indexMark = GTK.gtk_text_buffer_create_mark(bufferHandle, buffer, position, true); GTK.gtk_text_view_scroll_to_mark(handle, indexMark, 0, true, 0, 0); long vAdjustment = GTK.gtk_scrollable_get_vadjustment(handle); cachedAdjustment = GTK.gtk_adjustment_get_value(vAdjustment); } /** * Shows the selection. * <p> * If the selection is already showing * in the receiver, this method simply returns. Otherwise, * lines are scrolled until the selection is visible. * </p> * * @exception SWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> * </ul> */ public void showSelection() { checkWidget(); if ((style & SWT.SINGLE) != 0) return; long mark = GTK.gtk_text_buffer_get_selection_bound(bufferHandle); GTK.gtk_text_view_scroll_to_mark(handle, mark, 0, true, 0, 0); mark = GTK.gtk_text_buffer_get_insert(bufferHandle); GTK.gtk_text_view_scroll_to_mark(handle, mark, 0, true, 0, 0); } int translateOffset(int offset) { if (segments == null) return offset; for (int i = 0, nSegments = segments.length; i < nSegments && offset - i >= segments[i]; i++) { offset++; } return offset; } @Override boolean translateTraversal(long event) { int[] key = new int[1]; GDK.gdk_event_get_keyval(event, key); switch (key[0]) { case GDK.GDK_KP_Enter: case GDK.GDK_Return: { long imContext = imContext(); if (imContext != 0) { long[] preeditString = new long[1]; GTK.gtk_im_context_get_preedit_string(imContext, preeditString, null, null); if (preeditString[0] != 0) { int length = C.strlen(preeditString[0]); OS.g_free(preeditString[0]); if (length != 0) return false; } } } } return super.translateTraversal(event); } @Override int traversalCode(int key, long event) { int bits = super.traversalCode(key, event); if ((style & SWT.READ_ONLY) != 0) return bits; if ((style & SWT.MULTI) != 0) { bits &= ~SWT.TRAVERSE_RETURN; if (key == GDK.GDK_Tab && event != 0) { int[] eventState = new int[1]; GDK.gdk_event_get_state(event, eventState); boolean next = (eventState[0] & GDK.GDK_SHIFT_MASK) == 0; if (next && (eventState[0] & GDK.GDK_CONTROL_MASK) == 0) { bits &= ~(SWT.TRAVERSE_TAB_NEXT | SWT.TRAVERSE_TAB_PREVIOUS); } } } return bits; } int untranslateOffset(int offset) { if (segments == null) return offset; for (int i = 0, nSegments = segments.length; i < nSegments && offset > segments[i]; i++) { offset--; } return offset; } String verifyText(String string, int start, int end) { if (string != null && string.length() == 0 && start == end) return null; Event event = new Event(); event.text = string; event.start = start; event.end = end; long eventPtr = GTK.gtk_get_current_event(); if (eventPtr != 0) { int type = GDK.gdk_event_get_event_type(eventPtr); type = fixGdkEventTypeValues(type); switch (type) { case GDK.GDK_KEY_PRESS: setKeyState(event, eventPtr); break; } gdk_event_free(eventPtr); } /* * It is possible (but unlikely), that application * code could have disposed the widget in the verify * event. If this happens, answer null to cancel * the operation. */ sendEvent(SWT.Verify, event); if (!event.doit || isDisposed()) return null; return event.text; } @Override long windowProc(long handle, long user_data) { if (hooks(SWT.Segments) || filters(SWT.Segments) || segments != null) { switch ((int) user_data) { case BACKSPACE: case COPY_CLIPBOARD: case CUT_CLIPBOARD: case PASTE_CLIPBOARD: { clearSegments(true); break; } case BACKSPACE_INVERSE: case COPY_CLIPBOARD_INVERSE: case CUT_CLIPBOARD_INVERSE: case PASTE_CLIPBOARD_INVERSE: { applySegments(); break; } } } return super.windowProc(handle, user_data); } @Override long windowProc(long handle, long arg0, long user_data) { if (hooks(SWT.Segments) || filters(SWT.Segments) || segments != null) { switch ((int) user_data) { case DIRECTION_CHANGED: { clearSegments(true); applySegments(); break; } } } return super.windowProc(handle, arg0, user_data); } @Override long windowProc(long handle, long arg0, long arg1, long user_data) { if (hooks(SWT.Segments) || filters(SWT.Segments) || segments != null) { switch ((int) user_data) { case DELETE_FROM_CURSOR: { clearSegments(true); break; } case DELETE_FROM_CURSOR_INVERSE: { applySegments(); break; } } } return super.windowProc(handle, arg0, arg1, user_data); } @Override long windowProc(long handle, long arg0, long arg1, long arg2, long user_data) { if (hooks(SWT.Segments) || filters(SWT.Segments) || segments != null) { switch ((int) user_data) { case MOVE_CURSOR: { if (arg0 == GTK.GTK_MOVEMENT_VISUAL_POSITIONS) { clearSegments(true); } break; } case MOVE_CURSOR_INVERSE: { if (arg0 == GTK.GTK_MOVEMENT_VISUAL_POSITIONS) { applySegments(); } break; } } } return super.windowProc(handle, arg0, arg1, arg2, user_data); } }