Java tutorial
/* This file belongs to the Servoy development and deployment environment, Copyright (C) 1997-2010 Servoy BV This program is free software; you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program; if not, see http://www.gnu.org/licenses or write to the Free Software Foundation,Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 */ package com.servoy.j2db.server.headlessclient.dataui; import java.awt.Color; import java.awt.Cursor; import java.awt.Dimension; import java.awt.Font; import java.awt.Insets; import java.awt.Point; import java.awt.Rectangle; import java.util.ArrayList; import java.util.List; import java.util.Locale; import javax.swing.border.Border; import javax.swing.text.Document; import org.apache.wicket.AttributeModifier; import org.apache.wicket.Component; import org.apache.wicket.Page; import org.apache.wicket.ajax.AjaxEventBehavior; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.markup.ComponentTag; import org.apache.wicket.markup.MarkupStream; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.form.TextArea; import org.apache.wicket.markup.html.internal.HtmlHeaderContainer; import org.apache.wicket.model.IModel; import org.apache.wicket.model.IModelComparator; import org.apache.wicket.model.Model; import org.apache.wicket.util.convert.ConversionException; import org.apache.wicket.util.string.Strings; import com.servoy.base.util.ITagResolver; import com.servoy.j2db.FormManager; import com.servoy.j2db.IApplication; import com.servoy.j2db.IMainContainer; import com.servoy.j2db.IScriptExecuter; import com.servoy.j2db.IServiceProvider; import com.servoy.j2db.dataprocessing.IDisplayData; import com.servoy.j2db.dataprocessing.IEditListener; import com.servoy.j2db.scripting.JSEvent; import com.servoy.j2db.server.headlessclient.MainPage; import com.servoy.j2db.ui.IEventExecutor; import com.servoy.j2db.ui.IFieldComponent; import com.servoy.j2db.ui.ILabel; import com.servoy.j2db.ui.IProviderStylePropertyChanges; import com.servoy.j2db.ui.IStylePropertyChanges; import com.servoy.j2db.ui.ISupportInputSelection; import com.servoy.j2db.ui.ISupportOnRender; import com.servoy.j2db.ui.ISupportScroll; import com.servoy.j2db.ui.ISupportSimulateBounds; import com.servoy.j2db.ui.ISupportSimulateBoundsProvider; import com.servoy.j2db.ui.ISupportWebBounds; import com.servoy.j2db.ui.scripting.AbstractRuntimeField; import com.servoy.j2db.util.ScopesUtils; import com.servoy.j2db.util.Text; import com.servoy.j2db.util.Utils; /** * Represents a textarea field in the webbrowser. * * @author jcompagner */ @SuppressWarnings("nls") public class WebDataTextArea extends TextArea implements IFieldComponent, IDisplayData, IProviderStylePropertyChanges, ISupportWebBounds, IRightClickListener, ISupportInputSelection, ISupportSimulateBoundsProvider, ISupportOnRender, ISupportScroll { private static final long serialVersionUID = 1L; // private boolean selectOnEnter; // private Cursor cursor; private boolean needEntireState; private Insets margin; // private int horizontalAlignment; private String inputId; private final WebEventExecutor eventExecutor; private final IApplication application; private FindModeDisabledSimpleAttributeModifier maxLengthBehavior; private final AbstractRuntimeField<IFieldComponent> scriptable; public WebDataTextArea(final IApplication application, final AbstractRuntimeField<IFieldComponent> scriptable, String id) { super(id); this.application = application; setVersioned(false); boolean useAJAX = Utils.getAsBoolean(application.getRuntimeProperties().get("useAJAX")); //$NON-NLS-1$ eventExecutor = new WebEventExecutor(this, useAJAX); setOutputMarkupPlaceholderTag(true); add(new AttributeModifier("readonly", true, new Model<String>() //$NON-NLS-1$ { @Override public String getObject() { return (editable ? AttributeModifier.VALUELESS_ATTRIBUTE_REMOVE : AttributeModifier.VALUELESS_ATTRIBUTE_ADD); } })); add(new AttributeModifier("placeholder", true, new Model<String>() //$NON-NLS-1$ { private static final long serialVersionUID = 1L; @Override public String getObject() { return application.getI18NMessageIfPrefixed(scriptable.getPlaceholderText()); } }) { @Override public boolean isEnabled(Component component) { return super.isEnabled(component) && scriptable.getPlaceholderText() != null; } }); add(new AjaxEventBehavior("onselect") { @Override protected void onEvent(AjaxRequestTarget target) { setSelectedText(getComponent().getRequest().getParameter("st")); } @Override public CharSequence getCallbackUrl(final boolean onlyTargetActivePage) { CharSequence callbackURL = super.getCallbackUrl(onlyTargetActivePage); return callbackURL.toString() + "&st=' + Servoy.Utils.getSelectedText('" + getMarkupId() + "') + '"; } @Override protected String findIndicatorId() { return null; // main page defines it and the timer shouldn't show it } }); add(StyleAttributeModifierModel.INSTANCE); add(TooltipAttributeModifier.INSTANCE); add(new FilterBackspaceKeyAttributeModifier(new Model<String>() { private static final long serialVersionUID = 1332637522687352873L; @Override public String getObject() { return editable ? null : FilterBackspaceKeyAttributeModifier.SCRIPT; } })); this.scriptable = scriptable; add(new ScrollBehavior(this)); } public final AbstractRuntimeField<IFieldComponent> getScriptObject() { return scriptable; } /** * @see org.apache.wicket.Component#getLocale() */ @Override public Locale getLocale() { return application.getLocale(); } public IStylePropertyChanges getStylePropertyChanges() { return scriptable.getChangesRecorder(); } /** * @see wicket.Component#getComparator() */ @Override public IModelComparator getModelComparator() { return ComponentValueComparator.COMPARATOR; } @Override protected void onRender(final MarkupStream markupStream) { super.onRender(markupStream); getStylePropertyChanges().setRendered(); IModel<?> model = getInnermostModel(); if (model instanceof RecordItemModel) { ((RecordItemModel) model).updateRenderedValue(this); } } @Override protected void onComponentTag(final ComponentTag tag) { super.onComponentTag(tag); boolean useAJAX = Utils.getAsBoolean(application.getRuntimeProperties().get("useAJAX")); //$NON-NLS-1$ if (useAJAX) { Object oe = scriptable.getClientProperty("ajax.enabled"); if (oe != null) useAJAX = Utils.getAsBoolean(oe); } if (!useAJAX) { Form<?> f = getForm(); if (f != null) { if (eventExecutor.hasRightClickCmd()) { CharSequence urlr = urlFor(IRightClickListener.INTERFACE); // We need a "return false;" so that the context menu is not displayed in the browser. tag.put("oncontextmenu", f.getJsForInterfaceUrl(urlr) + " return false;"); //$NON-NLS-1$ //$NON-NLS-2$ } } } } @Override public void renderHead(final HtmlHeaderContainer container) { super.renderHead(container); container.getHeaderResponse().renderOnDomReadyJavascript( "$(function(){$(\"#" + getMarkupId() + "\").numpadDecSeparator({useRegionalSettings: true});});"); //$NON-NLS-1$ //$NON-NLS-2$ if (scriptable.getPlaceholderText() != null) { container.getHeaderResponse().renderOnLoadJavascript("$('#" + getMarkupId() + "').placeholder();"); } } @Override protected Object convertValue(String[] value) throws ConversionException { String tmp = value != null && value.length > 0 ? value[0] : null; if (getConvertEmptyInputStringToNull() && Strings.isEmpty(tmp)) { return null; } return tmp; } /** * @see wicket.markup.html.form.FormComponent#getInputName() */ @Override public String getInputName() { if (inputId == null) { Page page = findPage(); if (page instanceof MainPage) { inputId = ((MainPage) page).nextInputNameId(); } else { return super.getInputName(); } } return inputId; } /** * @see com.servoy.j2db.ui.IFieldComponent#setSelectOnEnter(boolean) */ public void setSelectOnEnter(boolean selectOnEnter) { // this.selectOnEnter = selectOnEnter; } /** * @see com.servoy.j2db.ui.IFieldComponent#addScriptExecuter(com.servoy.j2db.IScriptExecuter) */ public void addScriptExecuter(IScriptExecuter scriptExecuter) { eventExecutor.setScriptExecuter(scriptExecuter); } public IEventExecutor getEventExecutor() { return eventExecutor; } /** * @see com.servoy.j2db.ui.IFieldComponent#setEnterCmds(java.lang.String, Object[][]) */ public void setEnterCmds(String[] enterCmds, Object[][] args) { eventExecutor.setEnterCmds(enterCmds, args); } /** * @see com.servoy.j2db.ui.IFieldComponent#setLeaveCmds(String[], Object[][]) */ public void setLeaveCmds(String[] leaveCmds, Object[][] args) { eventExecutor.setLeaveCmds(leaveCmds, args); } /** * @see com.servoy.j2db.ui.IFieldComponent#setActionCmd(java.lang.String, Object[]) */ public void setActionCmd(String actionCmd, Object[] args) { eventExecutor.setActionCmd(actionCmd, args); } /** * @see com.servoy.j2db.ui.IFieldComponent#setChangeCmd(java.lang.String, Object[]) */ public void setChangeCmd(String changeCmd, Object[] args) { eventExecutor.setChangeCmd(changeCmd, args); } /** * @see com.servoy.j2db.ui.IFieldComponent#setNeedEntireState(boolean) */ public void setNeedEntireState(boolean needEntireState) { this.needEntireState = needEntireState; } /** * @see com.servoy.j2db.dataprocessing.IDisplayData#needEntireState() */ public boolean needEntireState() { return needEntireState; } /** * @see com.servoy.j2db.ui.IFieldComponent#setMaxLength(int) */ public void setMaxLength(int maxLength) { if (maxLengthBehavior != null) remove(maxLengthBehavior); maxLengthBehavior = null; if (maxLength > 0) { maxLengthBehavior = new FindModeDisabledSimpleAttributeModifier(getEventExecutor(), "onkeyup", //$NON-NLS-1$ ("Servoy.Validation.imposeMaxLength(this, " + +maxLength + ");").intern()); //$NON-NLS-1$ //$NON-NLS-2$ add(maxLengthBehavior); } } /** * @see com.servoy.j2db.ui.IFieldComponent#setMargin(java.awt.Insets) */ public void setMargin(Insets margin) { this.margin = margin; } public Insets getMargin() { return margin; } /** * @see com.servoy.j2db.ui.IFieldComponent#setHorizontalAlignment(int) */ public void setHorizontalAlignment(int horizontalAlignment) { // this.horizontalAlignment = horizontalAlignment; } public void setCursor(Cursor cursor) { // this.cursor = cursor; } public Object getValueObject() { return getDefaultModelObjectAsString(); } public void setValueObject(Object value) { ((ChangesRecorder) getStylePropertyChanges()).testChanged(this, value); } public boolean needEditListener() { return false; } public void addEditListener(IEditListener l) { } /** * @see com.servoy.j2db.dataprocessing.IDisplayData#getDocument() */ public Document getDocument() { return null; } public boolean isValueValid() { return isValueValid; } private boolean isValueValid = true; private Object previousValidValue; public void setValueValid(boolean valid, Object oldVal) { application.getRuntimeProperties().put(IServiceProvider.RT_LASTFIELDVALIDATIONFAILED_FLAG, Boolean.valueOf(!valid)); isValueValid = valid; if (!isValueValid) { previousValidValue = oldVal; requestFocusToComponent(); } else { previousValidValue = null; } } public void notifyLastNewValueWasChange(final Object oldVal, final Object newVal) { if (eventExecutor.hasChangeCmd()) { application.invokeLater(new Runnable() { public void run() { WebEventExecutor.setSelectedIndex(WebDataTextArea.this, null, IEventExecutor.MODIFIERS_UNSPECIFIED); eventExecutor.fireChangeCommand(previousValidValue == null ? oldVal : previousValidValue, newVal, false, WebDataTextArea.this); } }); } else { setValueValid(true, null); } } private boolean wasEditable; public void setValidationEnabled(boolean b) { if (eventExecutor.getValidationEnabled() == b) return; if (ScopesUtils.isVariableScope(dataProviderID)) return; eventExecutor.setValidationEnabled(b); boolean prevEditState = editState; if (b) { setEditable(wasEditable); } else { wasEditable = editable; if (!Boolean.TRUE .equals(application.getClientProperty(IApplication.LEAVE_FIELDS_READONLY_IN_FIND_MODE))) { setEditable(true); } } editState = prevEditState; } /** * @see com.servoy.j2db.dataprocessing.IDisplay#stopUIEditing(boolean) */ public boolean stopUIEditing(boolean looseFocus) { if (!isValueValid) { requestFocusToComponent(); return false; } return true; } /* * jsmethods--------------------------------------------------- */ public void requestFocusToComponent() { IMainContainer currentContainer = ((FormManager) application.getFormManager()).getCurrentContainer(); if (currentContainer instanceof MainPage) { ((MainPage) currentContainer).componentToFocus(this); } } public void selectAll() { Page page = findPage(); if (page instanceof MainPage) { ((MainPage) page).getPageContributor() .addDynamicJavaScript("document.getElementById('" + getMarkupId() + "').select();"); } } public void replaceSelectedText(String s) { Page page = findPage(); if (page instanceof MainPage) { ((MainPage) page).getPageContributor() .addDynamicJavaScript("Servoy.Utils.replaceSelectedText('" + getMarkupId() + "','" + s + "');"); } } private String textSelection; public void setSelectedText(String sel) { textSelection = sel; } public String getSelectedText() { if (textSelection != null) { String sel = textSelection; setSelectedText(null); return sel; } return null; } /* * readonly/editable--------------------------------------------------- */ private boolean editable; public void setEditable(boolean b) { editState = b; editable = b; } public boolean isEditable() { return editable; } public boolean isReadOnly() { return !editable; } private boolean editState; public void setReadOnly(boolean b) { if (b && !editable) return; if (b) { setEditable(false); editState = true; } else { setEditable(editState); } } /* * dataprovider--------------------------------------------------- */ public void setDataProviderID(String dataProviderID) { this.dataProviderID = dataProviderID; } public String getDataProviderID() { return dataProviderID; } private String dataProviderID; public void setName(String n) { name = n; } private String name; public String getName() { return name; } /* * border--------------------------------------------------- */ private Border border; public void setBorder(Border border) { this.border = border; } public Border getBorder() { return border; } /* * opaque--------------------------------------------------- */ public void setOpaque(boolean opaque) { this.opaque = opaque; } private boolean opaque; public boolean isOpaque() { return opaque; } /* * titleText--------------------------------------------------- */ private String titleText = null; public void setTitleText(String title) { this.titleText = title; } public String getTitleText() { return Text.processTags(titleText, resolver); } private String tooltip; public void setToolTipText(String tooltip) { this.tooltip = Utils.stringIsEmpty(tooltip) ? null : tooltip; } protected ITagResolver resolver; public void setTagResolver(ITagResolver resolver) { this.resolver = resolver; } /** * @see com.servoy.j2db.ui.IComponent#getToolTipText() */ public String getToolTipText() { if (tooltip != null && getInnermostModel() instanceof RecordItemModel) { return Text.processTags(tooltip, resolver); } return tooltip; } /* * font--------------------------------------------------- */ public void setFont(Font font) { this.font = font; } private Font font; public Font getFont() { return font; } private Color background; public void setBackground(Color cbg) { this.background = cbg; } public Color getBackground() { return background; } private Color foreground; private List<ILabel> labels; public List<ILabel> getLabelsFor() { return labels; } public void setForeground(Color cfg) { this.foreground = cfg; } public Color getForeground() { return foreground; } /* * visible--------------------------------------------------- */ public void setComponentVisible(boolean visible) { if (viewable || !visible) { setVisible(visible); if (labels != null) { for (int i = 0; i < labels.size(); i++) { ILabel label = labels.get(i); label.setComponentVisible(visible); } } } } public void addLabelFor(ILabel label) { if (labels == null) labels = new ArrayList<ILabel>(3); labels.add(label); } public List<ILabel> getLabelForElementNames() { return labels; } public void setComponentEnabled(final boolean b) { if (accessible || !b) { super.setEnabled(b); ((ChangesRecorder) getStylePropertyChanges()).setChanged(); if (labels != null) { for (int i = 0; i < labels.size(); i++) { ILabel label = labels.get(i); label.setComponentEnabled(b); } } } } private boolean accessible = true; public void setAccessible(boolean b) { if (!b) setComponentEnabled(b); accessible = b; } private boolean viewable = true; public void setViewable(boolean b) { if (!b) setComponentVisible(b); this.viewable = b; } public boolean isViewable() { return viewable; } /* * location--------------------------------------------------- */ private Point location = new Point(0, 0); public int getAbsoluteFormLocationY() { WebDataRenderer parent = findParent(WebDataRenderer.class); if (parent != null) { return parent.getYOffset() + getLocation().y; } return getLocation().y; } public void setLocation(Point location) { this.location = location; } public Point getLocation() { return location; } /* * size--------------------------------------------------- */ private Dimension size = new Dimension(0, 0); public Dimension getSize() { return size; } public Rectangle getWebBounds() { Dimension d = ((ChangesRecorder) getStylePropertyChanges()).calculateWebSize(size.width, size.height, border, margin, 0, null); return new Rectangle(location, d); } /** * @see com.servoy.j2db.ui.ISupportWebBounds#getPaddingAndBorder() */ public Insets getPaddingAndBorder() { return ((ChangesRecorder) getStylePropertyChanges()).getPaddingAndBorder(size.height, border, margin, 0, null); } public void setSize(Dimension size) { this.size = size; } public void setRightClickCommand(String rightClickCmd, Object[] args) { eventExecutor.setRightClickCmd(rightClickCmd, args); } public void onRightClick() { Form<?> f = getForm(); if (f != null) { // If form validation fails, we don't execute the method. if (f.process()) eventExecutor.onEvent(JSEvent.EventType.rightClick, null, this, IEventExecutor.MODIFIERS_UNSPECIFIED); } } @Override public String toString() { return scriptable.toString("value:" + getDefaultModelObjectAsString()); //$NON-NLS-1$ } @Override protected void onBeforeRender() { super.onBeforeRender(); fireOnRender(false); } public void fireOnRender(boolean force) { if (scriptable != null) { boolean isFocused = false; IMainContainer currentContainer = ((FormManager) application.getFormManager()).getCurrentContainer(); if (currentContainer instanceof MainPage) { isFocused = this.equals(((MainPage) currentContainer).getFocusedComponent()); } if (force) scriptable.getRenderEventExecutor().setRenderStateChanged(); scriptable.getRenderEventExecutor().fireOnRender(isFocused); } } public ISupportSimulateBounds getBoundsProvider() { return findParent(ISupportSimulateBounds.class); } private final Point scroll = new Point(0, 0); /* * (non-Javadoc) * * @see com.servoy.j2db.ui.ISupportScroll#setScroll(int, int) */ @Override public void setScroll(int x, int y) { scroll.x = x; scroll.y = y; } /* * (non-Javadoc) * * @see com.servoy.j2db.ui.ISupportScroll#getScroll() */ @Override public Point getScroll() { return scroll; } /* * (non-Javadoc) * * @see com.servoy.j2db.ui.ISupportScroll#getScrollComponentMarkupId() */ @Override public String getScrollComponentMarkupId() { return getMarkupId(); } }