Java tutorial
/* ****************************************************************************** * Copyright (c) 2006-2012 XMind Ltd. and others. * * This file is a part of XMind 3. XMind releases 3 and * above are dual-licensed under the Eclipse Public License (EPL), * which is available at http://www.eclipse.org/legal/epl-v10.html * and the GNU Lesser General Public License (LGPL), * which is available at http://www.gnu.org/licenses/lgpl.html * See http://www.xmind.net/license.html for details. * * Contributors: * XMind Ltd. - initial API and implementation *******************************************************************************/ package org.xmind.ui.dialogs; import org.eclipse.core.runtime.SafeRunner; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IAction; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.util.SafeRunnable; import org.eclipse.jface.util.Util; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.forms.events.HyperlinkAdapter; import org.eclipse.ui.forms.events.HyperlinkEvent; import org.eclipse.ui.forms.widgets.Hyperlink; import org.xmind.ui.resources.FontUtils; public class SimpleInfoPopupDialog extends SmoothPopupDialog { private String infoText; private IAction leftAction; private IAction rightAction; private int iconId; private Image icon; private boolean closeOnAction = false; public SimpleInfoPopupDialog(Shell parent, String title, String infoText) { this(parent, title, infoText, 0, null, null); } public SimpleInfoPopupDialog(Shell parent, String title, String infoText, int iconId) { this(parent, title, infoText, iconId, null, null); } public SimpleInfoPopupDialog(Shell parent, String title, String infoText, int iconId, IAction leftAction, IAction rightAction) { super(parent, true, title); this.infoText = infoText; this.iconId = iconId; this.leftAction = leftAction; this.rightAction = rightAction; } @Override protected Control createDialogArea(Composite parent) { Composite composite = (Composite) super.createDialogArea(parent); GridLayout layout = ((GridLayout) composite.getLayout()); layout.marginWidth = 5; layout.marginHeight = 5; boolean hasIcon = hasIcon(); boolean hasInfo = hasInfo(); if (hasIcon || hasInfo) { Composite infoArea = new Composite(composite, SWT.NO_FOCUS); int numColumns = hasIcon && hasInfo ? 2 : 1; GridLayout infoAreaLayout = new GridLayout(numColumns, false); infoAreaLayout.marginWidth = 0; infoAreaLayout.marginHeight = 0; infoArea.setLayout(infoAreaLayout); GridData infoAreaLayoutData = new GridData(GridData.FILL, GridData.FILL, true, true); infoAreaLayoutData.widthHint = 180; infoAreaLayoutData.heightHint = 100; infoArea.setLayoutData(infoAreaLayoutData); if (hasIcon) { Label iconLabel = new Label(infoArea, SWT.CENTER); iconLabel.setImage(getIcon()); iconLabel.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, !hasInfo, true)); } if (hasInfo) { Label info = new Label(infoArea, SWT.WRAP | SWT.CENTER); info.setText(getInfoText()); info.setFont(getInfoFont()); info.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, true)); } } boolean hasLeftAction = leftAction != null; boolean hasRightAction = rightAction != null; if (hasLeftAction || hasRightAction) { Composite actionBar = new Composite(composite, SWT.NO_FOCUS); int numColumns = hasLeftAction && hasRightAction ? 2 : 1; GridLayout infoAreaLayout = new GridLayout(numColumns, false); infoAreaLayout.marginWidth = 0; infoAreaLayout.marginHeight = 0; actionBar.setLayout(infoAreaLayout); actionBar.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, !hasInfo && !hasIcon)); if (hasLeftAction) { Control left = createHyperlink(actionBar, leftAction); GridData leftLayoutData = new GridData(SWT.BEGINNING, SWT.END, true, !hasInfo && !hasIcon); left.setLayoutData(leftLayoutData); } if (hasRightAction) { Control right = createHyperlink(actionBar, rightAction); GridData rightLayoutData = new GridData(SWT.END, SWT.END, true, !hasInfo && !hasIcon); right.setLayoutData(rightLayoutData); } } return composite; } protected Control createHyperlink(Composite parent, final IAction action) { Hyperlink hyperlink = new Hyperlink(parent, SWT.NONE); hyperlink.setText(getHyperlinkText(action)); hyperlink.setUnderlined(true); hyperlink.addHyperlinkListener(new HyperlinkAdapter() { public void linkActivated(HyperlinkEvent e) { openHyperlink(action); if (closeOnAction) { close(); } } }); return hyperlink; } protected String getHyperlinkText(IAction action) { String text = action.getText(); if (text != null) { text = Action.removeAcceleratorText(text); text = Action.removeMnemonics(text); return text; } return ""; //$NON-NLS-1$ } public IAction getLeftAction() { return leftAction; } public IAction getRightAction() { return rightAction; } protected boolean hasHyperlink() { return leftAction != null; } protected void openHyperlink(final IAction action) { SafeRunner.run(new SafeRunnable() { public void run() throws Exception { action.run(); } }); } protected Font getInfoFont() { return FontUtils.getNewHeight(JFaceResources.DEFAULT_FONT, Util.isMac() ? 14 : 10); } public String getInfoText() { return infoText; } protected boolean hasInfo() { return infoText != null; } protected Image getIcon() { if (icon == null && iconId > 0) { icon = getShell().getDisplay().getSystemImage(iconId); } return icon; } protected boolean hasIcon() { return iconId > 0 && getIcon() != null; } /** * Turn on/off "close popup dialog on left/right action triggered" feature. * * @param enabled */ public void setCloseOnAction(boolean enabled) { this.closeOnAction = enabled; } }