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/******************************************************************************* |
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* Copyright (c) 2006 Wind River Systems, Inc. and others. |
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* All rights reserved. This program and the accompanying materials |
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* are made available under the terms of the Eclipse Public License v1.0 |
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* which accompanies this distribution, and is available at |
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* http://www.eclipse.org/legal/epl-v10.html |
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* |
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* Contributors: |
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* Anton Leherbauer (Wind River Systems) - initial API and implementation |
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*******************************************************************************/ |
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package org.eclipse.cdt.internal.ui.navigator; |
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|
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import java.util.Arrays; |
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import java.util.Iterator; |
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import java.util.LinkedHashSet; |
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import java.util.List; |
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import java.util.Set; |
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|
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import org.eclipse.cdt.core.model.CoreModel; |
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import org.eclipse.cdt.core.model.ICElement; |
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import org.eclipse.cdt.core.model.ICModel; |
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import org.eclipse.cdt.internal.ui.cview.CViewContentProvider; |
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import org.eclipse.cdt.ui.CUIPlugin; |
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import org.eclipse.cdt.ui.PreferenceConstants; |
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import org.eclipse.core.resources.IContainer; |
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import org.eclipse.core.resources.IResource; |
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import org.eclipse.core.resources.IWorkspaceRoot; |
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import org.eclipse.core.runtime.IAdaptable; |
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import org.eclipse.jface.preference.IPreferenceStore; |
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import org.eclipse.jface.util.IPropertyChangeListener; |
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import org.eclipse.jface.util.PropertyChangeEvent; |
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import org.eclipse.jface.viewers.Viewer; |
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import org.eclipse.ui.IMemento; |
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import org.eclipse.ui.navigator.ICommonContentExtensionSite; |
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import org.eclipse.ui.navigator.IExtensionStateModel; |
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import org.eclipse.ui.navigator.IPipelinedTreeContentProvider; |
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import org.eclipse.ui.navigator.PipelinedShapeModification; |
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import org.eclipse.ui.navigator.PipelinedViewerUpdate; |
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|
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/** |
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* A content provider populating a Common Navigator view with CDT model content. |
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*/ |
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public class CNavigatorContentProvider extends CViewContentProvider implements IPipelinedTreeContentProvider { |
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|
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/** The CN extension state model for persisting viewer options */ |
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private IExtensionStateModel fStateModel; |
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/** The input object as supplied in the call to {@link #inputChanged()} */ |
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private Object fRealInput; |
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private IPropertyChangeListener fPropertyChangeListener; |
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|
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/* |
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* @see org.eclipse.ui.navigator.ICommonContentProvider#init(org.eclipse.ui.navigator.ICommonContentExtensionSite) |
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*/ |
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public void init(ICommonContentExtensionSite commonContentExtensionSite) { |
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IExtensionStateModel stateModel= commonContentExtensionSite.getExtensionStateModel(); |
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IMemento memento= commonContentExtensionSite.getMemento(); |
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fStateModel= stateModel; |
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restoreState(memento); |
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fPropertyChangeListener= new IPropertyChangeListener() { |
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public void propertyChange(PropertyChangeEvent event) { |
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boolean refreshViewer= false; |
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String property= event.getProperty(); |
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|
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if (property.equals(PreferenceConstants.PREF_SHOW_CU_CHILDREN)) { |
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boolean showCUChildren= fStateModel.getBooleanProperty(PreferenceConstants.PREF_SHOW_CU_CHILDREN); |
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setProvideMembers(showCUChildren); |
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refreshViewer= true; |
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} else if (property.equals(PreferenceConstants.CVIEW_GROUP_INCLUDES)) { |
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boolean groupIncludes= fStateModel.getBooleanProperty(PreferenceConstants.CVIEW_GROUP_INCLUDES); |
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setIncludesGrouping(groupIncludes); |
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refreshViewer= true; |
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} |
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|
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if (refreshViewer && getViewer() != null) { |
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getViewer().refresh(); |
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} |
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} |
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}; |
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CUIPlugin.getDefault().getPreferenceStore().addPropertyChangeListener(fPropertyChangeListener); |
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// TLETODO [CN] use extension state model for view options persistence |
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// fStateModel.addPropertyChangeListener(listener); |
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} |
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|
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/* |
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* @see org.eclipse.cdt.ui.CElementContentProvider#dispose() |
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*/ |
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public void dispose() { |
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CUIPlugin.getDefault().getPreferenceStore().removePropertyChangeListener(fPropertyChangeListener); |
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// TLETODO [CN] use extension state model for view options persistence |
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// fStateModel.removePropertyChangeListener(fPropertyChangeListener); |
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super.dispose(); |
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} |
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|
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/* |
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* @see org.eclipse.ui.navigator.IMementoAware#restoreState(org.eclipse.ui.IMemento) |
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*/ |
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public void restoreState(IMemento memento) { |
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IPreferenceStore store= PreferenceConstants.getPreferenceStore(); |
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boolean showCUChildren= store.getBoolean(PreferenceConstants.PREF_SHOW_CU_CHILDREN); |
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boolean groupIncludes= store.getBoolean(PreferenceConstants.CVIEW_GROUP_INCLUDES); |
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if (memento != null) { |
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String mementoValue= memento.getString(PreferenceConstants.PREF_SHOW_CU_CHILDREN); |
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if (mementoValue != null) { |
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showCUChildren= Boolean.parseBoolean(mementoValue); |
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} |
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mementoValue= memento.getString(PreferenceConstants.CVIEW_GROUP_INCLUDES); |
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if (mementoValue != null) { |
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groupIncludes= Boolean.parseBoolean(mementoValue); |
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} |
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} |
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setProvideMembers(showCUChildren); |
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setIncludesGrouping(groupIncludes); |
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setProvideWorkingCopy(true); |
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} |
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|
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/* |
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* @see org.eclipse.ui.navigator.IMementoAware#saveState(org.eclipse.ui.IMemento) |
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*/ |
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public void saveState(IMemento memento) { |
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if (memento != null) { |
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memento.putString(PreferenceConstants.PREF_SHOW_CU_CHILDREN, String.valueOf(getProvideMembers())); |
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memento.putString(PreferenceConstants.CVIEW_GROUP_INCLUDES, String.valueOf(areIncludesGroup())); |
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} |
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} |
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|
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/* |
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* @see org.eclipse.cdt.ui.CElementContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object) |
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*/ |
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public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
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fRealInput= newInput; |
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super.inputChanged(viewer, oldInput, findInputElement(newInput)); |
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} |
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|
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private Object findInputElement(Object newInput) { |
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if (newInput instanceof IWorkspaceRoot) { |
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return CoreModel.create((IWorkspaceRoot) newInput); |
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} |
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return newInput; |
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} |
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|
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/* |
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* @see org.eclipse.cdt.internal.ui.BaseCElementContentProvider#getParent(java.lang.Object) |
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*/ |
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public Object getParent(Object element) { |
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Object parent= super.getParent(element); |
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if (parent instanceof ICModel) { |
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return getViewerInput() != null ? fRealInput : parent; |
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} |
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return parent; |
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} |
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|
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/** |
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* Access the viewer input. |
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* @return the viewer input |
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*/ |
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protected Object getViewerInput() { |
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return fInput; |
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} |
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|
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/** |
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* Access the viewer. |
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* @return the viewer |
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*/ |
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protected Viewer getViewer() { |
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return fViewer; |
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} |
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/* |
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* @see org.eclipse.cdt.internal.ui.BaseCElementContentProvider#getElements(java.lang.Object) |
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*/ |
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public Object[] getElements(Object parent) { |
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if (parent instanceof IWorkspaceRoot) { |
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return super.getElements(CoreModel.create((IWorkspaceRoot)parent)); |
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} |
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return super.getElements(parent); |
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} |
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/* |
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* @see org.eclipse.cdt.internal.ui.cview.CViewContentProvider#getChildren(java.lang.Object) |
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*/ |
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public Object[] getChildren(Object element) { |
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Object children[]; |
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if (element instanceof IWorkspaceRoot) { |
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children = super.getChildren(CoreModel.create((IWorkspaceRoot)element)); |
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} else { |
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children = super.getChildren(element); |
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} |
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return children; |
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} |
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/* |
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* @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#getPipelinedChildren(java.lang.Object, java.util.Set) |
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*/ |
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public void getPipelinedChildren(Object parent, Set currentChildren) { |
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Object[] children= getChildren(parent); |
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for (Iterator iter= currentChildren.iterator(); iter.hasNext();) { |
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if (iter.next() instanceof IResource) { |
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iter.remove(); |
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} |
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} |
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currentChildren.addAll(Arrays.asList(children)); |
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} |
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|
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/* |
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* @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#getPipelinedElements(java.lang.Object, java.util.Set) |
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*/ |
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public void getPipelinedElements(Object input, Set currentElements) { |
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// only replace plain resource elements with custom elements |
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// and avoid duplicating elements already customized |
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// by upstream content providers |
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Object[] elements= getElements(input); |
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List elementList= Arrays.asList(elements); |
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for (Iterator iter= currentElements.iterator(); iter.hasNext();) { |
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Object element= iter.next(); |
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IResource resource= null; |
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if (element instanceof IResource) { |
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resource= (IResource)element; |
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} else if (element instanceof IAdaptable) { |
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resource= (IResource)((IAdaptable)element).getAdapter(IResource.class); |
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} |
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if (resource != null) { |
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int i= elementList.indexOf(resource); |
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if (i >= 0) { |
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elements[i]= null; |
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} |
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} |
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} |
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for (int i= 0; i < elements.length; i++) { |
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Object element= elements[i]; |
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if (element instanceof ICElement) { |
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ICElement cElement= (ICElement)element; |
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IResource resource= cElement.getResource(); |
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if (resource != null) { |
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currentElements.remove(resource); |
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} |
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currentElements.add(element); |
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} else if (element != null) { |
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currentElements.add(element); |
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} |
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} |
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} |
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/* |
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* @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#getPipelinedParent(java.lang.Object, java.lang.Object) |
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*/ |
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public Object getPipelinedParent(Object object, Object suggestedParent) { |
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return getParent(object); |
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} |
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/* |
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* @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#interceptAdd(org.eclipse.ui.navigator.PipelinedShapeModification) |
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*/ |
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public PipelinedShapeModification interceptAdd(PipelinedShapeModification addModification) { |
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convertToCElements(addModification); |
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return addModification; |
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} |
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/* |
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* @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#interceptRefresh(org.eclipse.ui.navigator.PipelinedViewerUpdate) |
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*/ |
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public boolean interceptRefresh(PipelinedViewerUpdate refreshSynchronization) { |
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return convertToCElements(refreshSynchronization.getRefreshTargets()); |
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} |
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/* |
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* @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#interceptRemove(org.eclipse.ui.navigator.PipelinedShapeModification) |
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*/ |
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public PipelinedShapeModification interceptRemove(PipelinedShapeModification removeModification) { |
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convertToCElements(removeModification.getChildren()); |
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return removeModification; |
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} |
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/* |
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* @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#interceptUpdate(org.eclipse.ui.navigator.PipelinedViewerUpdate) |
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*/ |
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public boolean interceptUpdate(PipelinedViewerUpdate updateSynchronization) { |
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return convertToCElements(updateSynchronization.getRefreshTargets()); |
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} |
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/** |
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* Converts the shape modification to use ICElements. |
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* |
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* @param modification |
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* the shape modification to convert |
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* @return <code>true</code> if the shape modification set was modified |
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*/ |
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private boolean convertToCElements( |
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PipelinedShapeModification modification) { |
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Object parent= modification.getParent(); |
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if (parent instanceof IContainer) { |
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ICElement element= CoreModel.getDefault().create((IContainer) parent); |
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if (element != null && element.exists()) { |
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// don't convert the root |
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if( !(element instanceof ICModel)) { |
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modification.setParent(element); |
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} |
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return convertToCElements(modification.getChildren()); |
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} |
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} |
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return false; |
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} |
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|
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/** |
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* Converts the given set to ICElements. |
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* |
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* @param currentChildren |
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* The set of current children that would be contributed or |
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* refreshed in the viewer. |
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* @return <code>true</code> if the input set was modified |
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*/ |
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private boolean convertToCElements(Set currentChildren) { |
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LinkedHashSet convertedChildren= new LinkedHashSet(); |
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ICElement newChild; |
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for (Iterator iter= currentChildren.iterator(); iter.hasNext();) { |
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Object child= iter.next(); |
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if (child instanceof IResource) { |
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if ((newChild= CoreModel.getDefault().create((IResource) child)) != null |
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&& newChild.exists()) { |
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iter.remove(); |
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convertedChildren.add(newChild); |
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} |
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} |
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} |
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if (!convertedChildren.isEmpty()) { |
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currentChildren.addAll(convertedChildren); |
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return true; |
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} |
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return false; |
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|
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} |
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|
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} |
