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.mindmap; import java.util.List; import org.eclipse.draw2d.ColorConstants; import org.eclipse.draw2d.Figure; import org.eclipse.draw2d.IFigure; import org.eclipse.draw2d.Label; import org.eclipse.draw2d.MarginBorder; import org.eclipse.draw2d.PositionConstants; import org.eclipse.draw2d.ToolbarLayout; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IAction; import org.eclipse.jface.action.IMenuListener; import org.eclipse.jface.action.IMenuManager; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.util.IPropertyChangeListener; import org.eclipse.jface.util.PropertyChangeEvent; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.widgets.Display; import org.xmind.core.ITopic; import org.xmind.gef.GEF; import org.xmind.gef.draw2d.RotatableWrapLabel; import org.xmind.gef.draw2d.SizeableImageFigure; import org.xmind.gef.part.IPart; import org.xmind.gef.part.IRequestHandler; import org.xmind.gef.policy.NullEditPolicy; import org.xmind.gef.service.IFeedback; import org.xmind.gef.ui.actions.IActionRegistry; import org.xmind.ui.internal.decorators.IconTipDecorator; import org.xmind.ui.mindmap.IIconTipPart; import org.xmind.ui.mindmap.ISelectionFeedbackHelper; import org.xmind.ui.mindmap.ITopicPart; import org.xmind.ui.resources.ColorUtils; import org.xmind.ui.resources.FontUtils; import org.xmind.ui.resources.ImageReference; public class IconTipPart extends MindMapPartBase implements IIconTipPart, IPropertyChangeListener { public static final String TEXT_COLOR = "#2e2e2e"; //$NON-NLS-1$ private IAction action; private IMenuManager menu; private String actionId; private ImageReference imageRef = null; public IconTipPart() { setDecorator(IconTipDecorator.getInstance()); } protected IFigure createFigure() { return new SizeableImageFigure(); } public IAction getAction() { return action; } public Image getImage() { if (imageRef != null && !imageRef.isDisposed()) return imageRef.getImage(); return null; } public SizeableImageFigure getImageFigure() { return (SizeableImageFigure) super.getFigure(); } public IMenuManager getPopupMenu() { TopicPart topicPart = (TopicPart) getParent(); ITopic topic = topicPart.getTopic(); IconTip iconTip = (IconTip) IconTipPart.this.getModel(); final List<IAction> actions = iconTip.getInfoItemContributor().getPopupMenuActions(topicPart, topic); if (actions == null || actions.isEmpty()) { return null; } else { if (menu == null) { menu = new MenuManager(); menu.setRemoveAllWhenShown(true); menu.addMenuListener(new IMenuListener() { public void menuAboutToShow(IMenuManager manager) { for (IAction action : actions) { menu.add(action); } } }); } return menu; } } public ITopic getTopic() { return (ITopic) super.getRealModel(); } public ITopicPart getTopicPart() { if (getParent() instanceof ITopicPart) return (ITopicPart) getParent(); return null; } public void setParent(IPart parent) { if (getParent() instanceof TopicPart) { ((TopicPart) getParent()).removeIconTip(this); } super.setParent(parent); if (getParent() instanceof TopicPart) { ((TopicPart) getParent()).addIconTip(this); } } protected void register() { super.register(); if (getModel() instanceof IconTip) { setAction(((IconTip) getModel()).getAction()); } } protected void unregister() { setAction(null); super.unregister(); } public void setAction(IAction action) { if (action == this.action) return; if (this.action != null) this.action.removePropertyChangeListener(this); if (actionId != null) unregisterAction(actionId, this.action); this.action = action; actionId = action == null ? null : action.getId(); if (actionId != null) registerAction(action); if (action != null) action.addPropertyChangeListener(this); updateImage(); } private void unregisterAction(String actionId, IAction action) { ITopicPart topicPart = getTopicPart(); if (topicPart == null) return; IActionRegistry actionRegistry = (IActionRegistry) topicPart.getAdapter(IActionRegistry.class); if (actionRegistry == null) return; if (actionRegistry.getAction(actionId) == action) { actionRegistry.removeAction(actionId); } } private void registerAction(IAction action) { ITopicPart topicPart = getTopicPart(); if (topicPart == null) return; IActionRegistry actionRegistry = (IActionRegistry) topicPart.getAdapter(IActionRegistry.class); if (actionRegistry == null) return; actionRegistry.addAction(action); } private void updateImage() { ImageDescriptor oldImageDescriptor = imageRef == null ? null : imageRef.getImageDescriptor(); ImageDescriptor newImageDescriptor = null; if (action != null) newImageDescriptor = action.getImageDescriptor(); if (oldImageDescriptor != newImageDescriptor && (oldImageDescriptor == null || !oldImageDescriptor.equals(newImageDescriptor))) { if (imageRef != null) { imageRef.dispose(); } imageRef = newImageDescriptor == null ? null : new ImageReference(newImageDescriptor, false); } } protected void onDeactivated() { if (imageRef != null) { imageRef.dispose(); imageRef = null; } super.onDeactivated(); } protected void updateView() { super.updateView(); updateToolTip(); updateImage(); } protected IFigure createToolTip() { if (action != null) { String text = action.getText(); String tooltip = action.getToolTipText(); if (text != null || tooltip != null) { IFigure fig = new Figure(); fig.setBorder(new MarginBorder(1, 3, 1, 3)); ToolbarLayout layout = new ToolbarLayout(false); layout.setMinorAlignment(ToolbarLayout.ALIGN_TOPLEFT); layout.setSpacing(7); fig.setLayoutManager(layout); // if (actionId != null // && actionId.equals(MindMapActionFactory.EDIT_NOTES // .getId())) { // text = null; // } if (text != null) { text = Action.removeAcceleratorText(text); text = Action.removeMnemonics(text); Label title = new Label(text); title.setFont(FontUtils.getBold(JFaceResources.DEFAULT_FONT)); title.setForegroundColor(ColorConstants.darkGray); fig.add(title); } if (tooltip != null) { RotatableWrapLabel description = new RotatableWrapLabel(tooltip, RotatableWrapLabel.NORMAL); description.setTextAlignment(PositionConstants.LEFT); description.setPrefWidth(Math.min(Display.getCurrent().getClientArea().width / 3, 350)); description.setFont(FontUtils.getRelativeHeight(JFaceResources.DEFAULT_FONT, -1)); // description.setForegroundColor(ColorConstants.gray); description.setForegroundColor(ColorUtils.getColor(TEXT_COLOR)); fig.add(description); } return fig; } } return super.createToolTip(); } @SuppressWarnings("unchecked") public Object getAdapter(Class adapter) { if (adapter.isAssignableFrom(ITopic.class)) return getTopic(); if (adapter == Image.class) return getImage(); if (adapter == IAction.class) return getAction(); if (adapter == IMenuManager.class) return getPopupMenu(); return super.getAdapter(adapter); } protected void declareEditPolicies(IRequestHandler reqHandler) { super.declareEditPolicies(reqHandler); reqHandler.installEditPolicy(GEF.ROLE_SELECTABLE, NullEditPolicy.getInstance()); } protected IFeedback createFeedback() { return new SimpleSelectionFeedback(this); } protected ISelectionFeedbackHelper createSelectionFeedbackHelper() { return new SelectionFeedbackHelper(); } public void propertyChange(PropertyChangeEvent event) { String property = event.getProperty(); if (IAction.TEXT.equals(property) || IAction.TOOL_TIP_TEXT.equals(property)) { updateToolTip(); } else if (IAction.IMAGE.equals(property)) { updateImage(); update(); } } public String getActionId() { return actionId; } }