Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2006, 2007 QNX Software Systems and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * QNX Software Systems - Initial API and implementation * Red Hat Inc. - Modified from MakefileContentOutlinePage for Automake files *******************************************************************************/ package org.eclipse.cdt.internal.autotools.ui.editors.automake; import java.util.ArrayList; import java.util.List; import org.eclipse.cdt.internal.autotools.ui.MakeUIImages; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.ui.IEditorInput; import org.eclipse.ui.views.contentoutline.ContentOutlinePage; public class AutomakefileContentOutlinePage extends ContentOutlinePage { protected IMakefile makefile; protected IMakefile nullMakefile = new NullMakefile(); private class AutomakefileContentProvider implements ITreeContentProvider { protected boolean showMacroDefinition = true; protected boolean showTargetRule = true; protected boolean showInferenceRule = true; protected boolean showIncludeChildren = false; protected IMakefile makefile; protected IMakefile nullMakefile = new NullMakefile(); /* (non-Javadoc) * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object) */ public Object[] getChildren(Object element) { if (element == fInput) { return getElements(makefile); } else if (element instanceof IDirective) { return getElements(element); } return new Object[0]; } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object) */ public Object getParent(Object element) { if (element instanceof IMakefile) { return fInput; } else if (element instanceof IDirective) { return ((IDirective) element).getParent(); } return fInput; } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object) */ public boolean hasChildren(Object element) { if (element == fInput) { return true; } else if (element instanceof IParent) { // Do not drill down in includes. if (element instanceof IInclude && !showIncludeChildren) { return false; } return true; } return false; } /* (non-Javadoc) * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) */ public Object[] getElements(Object inputElement) { IDirective[] directives; if (inputElement == fInput) { directives = makefile.getDirectives(); } else if (inputElement instanceof IRule) { directives = ((IRule) inputElement).getCommands(); } else if (inputElement instanceof IParent) { if (inputElement instanceof IInclude && !showIncludeChildren) { directives = new IDirective[0]; } else { directives = ((IParent) inputElement).getDirectives(); } } else { directives = new IDirective[0]; } List<IDirective> list = new ArrayList<IDirective>(directives.length); for (int i = 0; i < directives.length; i++) { if (showMacroDefinition && directives[i] instanceof IMacroDefinition) { list.add(directives[i]); } else if (showInferenceRule && directives[i] instanceof IInferenceRule) { list.add(directives[i]); } else if (showTargetRule && directives[i] instanceof ITargetRule) { list.add(directives[i]); } else if (showTargetRule && directives[i] instanceof AutomakeIfElse) { list.add(directives[i]); } else { boolean irrelevant = (directives[i] instanceof IComment || directives[i] instanceof IEmptyLine || directives[i] instanceof ITerminal); if (!irrelevant) { list.add(directives[i]); } } } return list.toArray(); } /* (non-Javadoc) * @see org.eclipse.jface.viewers.IContentProvider#dispose() */ public void dispose() { } /* (non-Javadoc) * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object) */ public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { if (oldInput != null) { makefile = nullMakefile; } if (newInput != null) { IWorkingCopyManager manager = AutomakeEditorFactory.getDefault().getWorkingCopyManager(); makefile = manager.getWorkingCopy((IEditorInput) newInput); if (makefile == null) { makefile = nullMakefile; } } } } private class AutomakefileLabelProvider extends LabelProvider implements ILabelProvider { /* (non-Javadoc) * @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object) */ public Image getImage(Object element) { if (element instanceof ITargetRule) { return MakeUIImages.getImage(MakeUIImages.IMG_OBJS_MAKEFILE_TARGET_RULE); } else if (element instanceof IInferenceRule) { return MakeUIImages.getImage(MakeUIImages.IMG_OBJS_MAKEFILE_INFERENCE_RULE); } else if (element instanceof IMacroDefinition) { return MakeUIImages.getImage(MakeUIImages.IMG_OBJS_MAKEFILE_MACRO); } else if (element instanceof IAutomakeConditional) { // Must process this before ICommand because if/else are also ICommands return super.getImage(element); } else if (element instanceof ICommand) { return MakeUIImages.getImage(MakeUIImages.IMG_OBJS_MAKEFILE_COMMAND); } else if (element instanceof IInclude) { return MakeUIImages.getImage(MakeUIImages.IMG_OBJS_MAKEFILE_INCLUDE); } else if (element instanceof IBadDirective) { return MakeUIImages.getImage(MakeUIImages.IMG_OBJS_ERROR); } else if (element instanceof AutomakeConfigMacro) { return MakeUIImages.getImage(MakeUIImages.IMG_OBJS_MAKEFILE_ACMACRO); } return super.getImage(element); } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object) */ public String getText(Object element) { String name; if (element instanceof IRule) { name = ((IRule) element).getTarget().toString().trim(); } else if (element instanceof IMacroDefinition) { name = ((IMacroDefinition) element).getName().trim(); } else if (element instanceof AutomakeIfElse) { AutomakeIfElse ifelse = (AutomakeIfElse) element; // FIXME: make this not a string comparison if (ifelse.getType().equals("if")) { name = "if " + ifelse.getCondition(); } else name = "else"; } else if (element instanceof AutomakeConfigMacro) { AutomakeConfigMacro macro = (AutomakeConfigMacro) element; name = macro.getName(); } else { name = super.getText(element); } if (name != null) { name = name.trim(); if (name.length() > 25) { name = name.substring(0, 25) + " ..."; //$NON-NLS-1$ } } return name; } } protected AutomakeEditor fEditor; protected Object fInput; public AutomakefileContentOutlinePage(AutomakeEditor editor) { super(); fEditor = editor; } /** * Sets the input of the outline page */ public void setInput(Object input) { fInput = input; update(); } /** * Updates the outline page. */ public void update() { final TreeViewer viewer = getTreeViewer(); if (viewer != null) { final Control control = viewer.getControl(); if (control != null && !control.isDisposed()) { control.getDisplay().asyncExec(new Runnable() { public void run() { if (!control.isDisposed()) { control.setRedraw(false); viewer.setInput(fInput); viewer.expandAll(); control.setRedraw(true); } } }); } } } /* (non-Javadoc) * @see org.eclipse.ui.part.IPage#createControl(org.eclipse.swt.widgets.Composite) */ public void createControl(Composite parent) { super.createControl(parent); TreeViewer viewer = getTreeViewer(); viewer.setContentProvider(new AutomakefileContentProvider()); viewer.setLabelProvider(new AutomakefileLabelProvider()); if (fInput != null) { viewer.setInput(fInput); } // MenuManager manager= new MenuManager("#MakefileOutlinerContext"); //$NON-NLS-1$ // manager.setRemoveAllWhenShown(true); // manager.addMenuListener(new IMenuListener() { // public void menuAboutToShow(IMenuManager m) { // contextMenuAboutToShow(m); // } // }); // Control tree = viewer.getControl(); // Menu menu = manager.createContextMenu(tree); // tree.setMenu(menu); // // viewer.addDoubleClickListener(new IDoubleClickListener() { // /* (non-Javadoc) // * @see org.eclipse.jface.viewers.IDoubleClickListener#doubleClick(org.eclipse.jface.viewers.DoubleClickEvent) // */ // public void doubleClick(DoubleClickEvent event) { // if (fOpenIncludeAction != null) { // fOpenIncludeAction.run(); // } // } // }); // // IPageSite site= getSite(); // site.registerContextMenu(MakeUIPlugin.getPluginId() + ".outline", manager, viewer); //$NON-NLS-1$ // site.setSelectionProvider(viewer); } /* (non-Javadoc) * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object) */ public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { if (oldInput != null) { makefile = nullMakefile; } if (newInput != null) { IWorkingCopyManager manager = AutomakeEditorFactory.getDefault().getWorkingCopyManager(); makefile = manager.getWorkingCopy((IEditorInput) newInput); if (makefile == null) { makefile = nullMakefile; } } } }