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.internal.dialogs; import java.util.HashMap; import java.util.List; import java.util.Map; import org.eclipse.core.runtime.Assert; import org.eclipse.core.runtime.CoreException; import org.eclipse.draw2d.IFigure; import org.eclipse.draw2d.PositionConstants; import org.eclipse.draw2d.geometry.Insets; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.IDialogSettings; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.resource.LocalResourceManager; import org.eclipse.jface.resource.ResourceManager; import org.eclipse.jface.viewers.IFontProvider; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.SashForm; import org.eclipse.swt.events.DisposeEvent; import org.eclipse.swt.events.DisposeListener; 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.Button; 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.IActionBars; import org.eclipse.ui.IEditorPart; import org.eclipse.ui.part.PageBook; import org.xmind.core.ITopic; import org.xmind.gef.EditDomain; import org.xmind.gef.GEF; import org.xmind.gef.part.IPart; import org.xmind.gef.util.Properties; import org.xmind.ui.dialogs.HyperlinkPage; import org.xmind.ui.dialogs.IHyperlinkPage; import org.xmind.ui.dialogs.IHyperlinkPageContainer; import org.xmind.ui.gallery.FrameFigure; import org.xmind.ui.gallery.FramePart; import org.xmind.ui.gallery.GalleryLayout; import org.xmind.ui.gallery.GalleryNavigablePolicy; import org.xmind.ui.gallery.GalleryPartFactory; import org.xmind.ui.gallery.GallerySelectTool; import org.xmind.ui.gallery.GalleryViewer; import org.xmind.ui.gallery.ShadowedLayer; import org.xmind.ui.internal.MindMapUIPlugin; import org.xmind.ui.mindmap.IProtocolDescriptor; import org.xmind.ui.mindmap.MindMapUI; import org.xmind.ui.util.Logger; import org.xmind.ui.viewers.ImageCachedLabelProvider; /** * @author Frank Shaka */ public class HyperlinkDialog extends TitleAreaDialog implements IHyperlinkPageContainer { private static class NullHyperlinkPage extends HyperlinkPage { private Label label; public void init(IEditorPart editor, IStructuredSelection selection) { } public void createControl(Composite parent) { label = new Label(parent, SWT.NONE); label.setText(DialogMessages.HyperlinkDialog_FailCreatePage_message); } public void dispose() { } public Control getControl() { return label; } public void setActionBars(IActionBars actionBars) { } public void setFocus() { if (label != null && !label.isDisposed()) { label.setFocus(); } } } private static class TypeItemPart extends FramePart { public TypeItemPart(Object model) { super(model); } protected IFigure createFigure() { IFigure fig = super.createFigure(); FrameFigure ff = (FrameFigure) fig; ShadowedLayer content = ff.getContentPane(); content.setBackgroundColor(null); content.setForegroundColor(null); content.setShadowVisible(false); content.setShadowAlpha(0); content.setBorderWidth(0); content.setOpaque(false); return fig; } } private static class TypePartFactory extends GalleryPartFactory { public IPart createPart(IPart context, Object model) { return super.createPart(context, model); } protected IPart createFramePart(IPart parent, Object model) { return new TypeItemPart(model); } } private class TypeViewerLableProvider extends ImageCachedLabelProvider implements IFontProvider { public String getText(Object element) { if (element instanceof HyperlinkPageDescriptor) return ((HyperlinkPageDescriptor) element).getName(); return super.getText(element); } protected Image createImage(Object element) { if (element instanceof HyperlinkPageDescriptor) { ImageDescriptor icon = ((HyperlinkPageDescriptor) element).getIcon(); if (icon != null) return icon.createImage(false); } return null; } public Font getFont(Object element) { return resources.createFont(JFaceResources.getDefaultFontDescriptor().increaseHeight(2)); } } public static final int REMOVE = 3; private static final int REMOVE_ID = IDialogConstants.CLIENT_ID + 1; private static final String KEY_SASH_WEIGHTS = "sashFormWeights"; //$NON-NLS-1$ private String value; private IEditorPart editor; private IStructuredSelection selection; private Map<String, IHyperlinkPage> pages = new HashMap<String, IHyperlinkPage>(); private IHyperlinkPage currentPage; // The current page message and description private String pageMessage; private int pageMessageType = IMessageProvider.NONE; private String pageDescription; private PageBook pageBook; private GalleryViewer typeViewer; private SashForm form; private ResourceManager resources; public HyperlinkDialog(Shell parentShell, IEditorPart editor, IStructuredSelection selection) { super(parentShell); resources = new LocalResourceManager(JFaceResources.getResources(), parentShell); this.editor = editor; this.selection = selection; setShellStyle(SWT.RESIZE | SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL); } @Override protected IDialogSettings getDialogBoundsSettings() { return MindMapUIPlugin.getDefault().getDialogSettings("org.xmind.ui.HyperlinkDialog"); //$NON-NLS-1$ } public void create() { super.create(); setTitle(DialogMessages.HyperlinkDialog_title); pageDescription = DialogMessages.HyperlinkDialog_description; setMessage(pageDescription); showInitContents(); updateButtons(); updateMessage(); } private void showInitContents() { List<HyperlinkPageDescriptor> descriptors = HyperlinkPageRegistry.getInstance() .getHyperlinkPageDescriptors(); if (!descriptors.isEmpty()) { value = getHyperlinkValue(selection); HyperlinkPageDescriptor initDescriptor = null; if (value != null && !"".equals(value)) { //$NON-NLS-1$ initDescriptor = findInitDescriptor(descriptors, value); } if (initDescriptor == null) { initDescriptor = descriptors.get(0); } typeViewer.setSelection(new StructuredSelection(initDescriptor), false); if (this.currentPage != null) { this.currentPage.setValue(value); this.currentPage.setFocus(); } } } private String getHyperlinkValue(IStructuredSelection selection) { ITopic last = null; String lastHyperlink = null; for (Object topic : selection.toArray()) { if (topic instanceof ITopic) { String h = ((ITopic) topic).getHyperlink(); if (last != null) { if (h != lastHyperlink && (h == null || !h.equals(lastHyperlink))) { return null; } } else { last = ((ITopic) topic); lastHyperlink = h; } } } return lastHyperlink; } private HyperlinkPageDescriptor findInitDescriptor(List<HyperlinkPageDescriptor> descriptors, String value) { IProtocolDescriptor protocolDescriptor = MindMapUI.getProtocolManager().findProtocolDescriptor(value); if (protocolDescriptor != null) { String id = protocolDescriptor.getId(); for (HyperlinkPageDescriptor pageDescriptor : descriptors) { if (id.equals(pageDescriptor.getProtocolId())) return pageDescriptor; } } return null; } public void configureShell(Shell shell) { super.configureShell(shell); shell.setText(DialogMessages.HyperlinkDialog_windowTitle); shell.addDisposeListener(new DisposeListener() { public void widgetDisposed(DisposeEvent e) { handleDispose(e); } }); } private void handleDispose(DisposeEvent e) { disposePages(); } /** * */ private void disposePages() { if (!pages.isEmpty()) { for (IHyperlinkPage page : pages.values()) { page.dispose(); } pages.clear(); } } protected Control createDialogArea(Composite parent) { Composite composite = (Composite) super.createDialogArea(parent); form = new SashForm(composite, SWT.HORIZONTAL | SWT.SMOOTH); form.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); ((GridData) form.getLayoutData()).widthHint = 400; ((GridData) form.getLayoutData()).heightHint = 300; form.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND)); form.setSashWidth(4); createTypeViewer(form); createPageBook(form); int[] weights = loadSashFormWeights(); if (weights != null) { form.setWeights(weights); } else { form.setWeights(new int[] { 25, 75 }); } Label label = new Label(composite, SWT.SEPARATOR | SWT.HORIZONTAL); label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); return composite; } /** * @param parent */ private void createPageBook(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); GridLayout gridLayout = new GridLayout(2, false); gridLayout.marginWidth = 0; gridLayout.marginHeight = 0; gridLayout.verticalSpacing = 0; gridLayout.horizontalSpacing = 0; composite.setLayout(gridLayout); Label label = new Label(composite, SWT.SEPARATOR | SWT.VERTICAL); label.setLayoutData(new GridData(SWT.BEGINNING, SWT.FILL, false, true)); pageBook = new PageBook(composite, SWT.NONE); pageBook.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); } /** * @param parent */ private void createTypeViewer(Composite parent) { typeViewer = new GalleryViewer(); Properties properties = typeViewer.getProperties(); properties.set(GalleryViewer.Horizontal, Boolean.FALSE); properties.set(GalleryViewer.Wrap, Boolean.FALSE); properties.set(GalleryViewer.TitlePlacement, PositionConstants.RIGHT); properties.set(GalleryViewer.FlatFrames, Boolean.TRUE); properties.set(GalleryViewer.Layout, new GalleryLayout(GalleryLayout.ALIGN_TOPLEFT, GalleryLayout.ALIGN_FILL, 0, 1, new Insets(1))); properties.set(GalleryViewer.SingleClickToOpen, Boolean.FALSE); properties.set(GEF.SelectionConstraint, GEF.SEL_SINGLE); // properties.set(GalleryViewer.FrameContentSize, new Dimension(32, 32)); // properties.set(GalleryViewer.ImageConstrained, Boolean.TRUE); EditDomain editDomain = new EditDomain(); editDomain.installTool(GEF.TOOL_SELECT, new GallerySelectTool()); editDomain.installEditPolicy(GalleryViewer.POLICY_NAVIGABLE, new GalleryNavigablePolicy()); typeViewer.setEditDomain(editDomain); typeViewer.setPartFactory(new TypePartFactory()); typeViewer.setLabelProvider(new TypeViewerLableProvider()); typeViewer.createControl(parent); typeViewer.setInput(HyperlinkPageRegistry.getInstance().getHyperlinkPageDescriptors()); typeViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { IStructuredSelection selection = (IStructuredSelection) event.getSelection(); HyperlinkPageDescriptor desc = (HyperlinkPageDescriptor) selection.getFirstElement(); showPage(desc); } }); } public IHyperlinkPage getCurrentPage() { return currentPage; } protected void showPage(HyperlinkPageDescriptor desc) { String id = desc.getId(); IHyperlinkPage page = pages.get(id); if (page == null) { page = createPage(desc); page.init(editor, selection); page.setContainer(this); pages.put(id, page); } showPage(page, desc); } private IHyperlinkPage createPage(HyperlinkPageDescriptor desc) { try { return desc.createPage(); } catch (CoreException e) { Logger.log(e); } return new NullHyperlinkPage(); } private void showPage(IHyperlinkPage page, HyperlinkPageDescriptor descriptor) { Control control = getPageControl(page, descriptor); pageBook.showPage(control); this.currentPage = page; updateButtons(); updateMessage(); page.setFocus(); } /** * @param page * @return */ private Control getPageControl(IHyperlinkPage page, HyperlinkPageDescriptor descriptor) { Control control = page.getControl(); if (control == null) { page.createControl(pageBook); control = page.getControl(); Assert.isNotNull(control); } return control; } protected void createButtonsForButtonBar(Composite parent) { createButton(parent, REMOVE_ID, DialogMessages.HyperlinkDialog_Remove, false); super.createButtonsForButtonBar(parent); } /* * (non-Javadoc) * @see org.eclipse.jface.dialogs.TrayDialog#close() */ @Override public boolean close() { if (form != null && !form.isDisposed()) { saveSashFormWeights(form); } return super.close(); } /** * @param form */ private void saveSashFormWeights(SashForm form) { IDialogSettings settings = getDialogBoundsSettings(); if (settings == null) return; int[] weights = form.getWeights(); if (weights == null || weights.length != 2) return; settings.put(KEY_SASH_WEIGHTS, String.format("%d,%d", weights[0], //$NON-NLS-1$ weights[1])); } private int[] loadSashFormWeights() { IDialogSettings settings = getDialogBoundsSettings(); if (settings == null) return null; String value = settings.get(KEY_SASH_WEIGHTS); if (value == null) return null; int index = value.indexOf(','); if (index < 0) return null; int w1, w2; try { w1 = Integer.parseInt(value.substring(0, index)); w2 = Integer.parseInt(value.substring(index + 1)); } catch (NumberFormatException e) { return null; } return new int[] { w1, w2 }; } public void updateButtons() { Button okButton = getButton(IDialogConstants.OK_ID); if (okButton != null && !okButton.isDisposed()) { okButton.setEnabled(isOkButtonEnabled()); } } private boolean isOkButtonEnabled() { if (currentPage == null) return false; return currentPage.canFinish(); } public void updateMessage() { if (currentPage == null) { return; } pageMessage = currentPage.getMessage(); if (pageMessage != null) { pageMessageType = currentPage.getMessageType(); } else { pageMessageType = IMessageProvider.NONE; } if (pageMessage == null) { setMessage(pageDescription); } else { setMessage(pageMessage, pageMessageType); } setErrorMessage(currentPage.getErrorMessage()); } protected void buttonPressed(int buttonId) { if (buttonId == REMOVE_ID) { removePressed(); } else { super.buttonPressed(buttonId); } } protected void removePressed() { setReturnCode(REMOVE); close(); } protected void okPressed() { getShell().setVisible(false); if (currentPage != null) { if (currentPage.tryFinish()) { this.value = currentPage.getValue(); super.okPressed(); } else { getShell().setVisible(true); } } } protected void cancelPressed() { super.cancelPressed(); } public String getValue() { return value; } }