/*******************************************************************************
* Copyright (c) 2007, 2010 Wind River Systems, Inc. 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:
* Markus Schorn - initial API and implementation
* Patrick Hofer [bug 325488]
*******************************************************************************/
package org.eclipse.cdt.internal.ui.typehierarchy;
import java.util.Iterator;
import org.eclipse.jface.bindings.Trigger;
import org.eclipse.jface.bindings.TriggerSequence;
import org.eclipse.jface.bindings.keys.KeyStroke;
import org.eclipse.jface.bindings.keys.SWTKeySupport;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
import org.eclipse.ui.progress.IWorkbenchSiteProgressService;
import com.ibm.icu.text.MessageFormat;
import org.eclipse.cdt.core.model.CModelException;
import org.eclipse.cdt.core.model.ICElement;
import org.eclipse.cdt.ui.CUIPlugin;
import org.eclipse.cdt.internal.ui.editor.ICEditorActionDefinitionIds;
import org.eclipse.cdt.internal.ui.text.AbstractInformationControl;
import org.eclipse.cdt.internal.ui.viewsupport.EditorOpener;
public class THInformationControl extends AbstractInformationControl implements ITHModelPresenter {
private THHierarchyModel fModel;
private THLabelProvider fHierarchyLabelProvider;
private TreeViewer fHierarchyTreeViewer;
private boolean fDisposed= false;
private KeyAdapter fKeyAdapter;
public THInformationControl(Shell parent, int shellStyle, int treeStyle) {
super(parent, shellStyle, treeStyle, ICEditorActionDefinitionIds.OPEN_QUICK_TYPE_HIERARCHY, true);
}
private KeyAdapter getKeyAdapter() {
if (fKeyAdapter == null) {
fKeyAdapter= new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
int accelerator = SWTKeySupport.convertEventToUnmodifiedAccelerator(e);
KeyStroke keyStroke = SWTKeySupport.convertAcceleratorToKeyStroke(accelerator);
Trigger[] triggers = getInvokingCommandTriggerSequence().getTriggers();
if (triggers == null)
return;
for (Trigger trigger : triggers) {
if (trigger.equals(keyStroke)) {
e.doit= false;
toggleHierarchy();
return;
}
}
}
};
}
return fKeyAdapter;
}
@Override
protected boolean hasHeader() {
return true;
}
@Override
protected Text createFilterText(Composite parent) {
Text text= super.createFilterText(parent);
text.addKeyListener(getKeyAdapter());
return text;
}
@Override
protected TreeViewer createTreeViewer(Composite parent, int style) {
Display display= getShell().getDisplay();
fModel= new THHierarchyModel(this, display, true);
fHierarchyLabelProvider= new THLabelProvider(display, fModel);
fHierarchyLabelProvider.setMarkImplementers(false);
fHierarchyTreeViewer = new TreeViewer(parent, SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
fHierarchyTreeViewer.setContentProvider(new THContentProvider());
fHierarchyTreeViewer.setLabelProvider(fHierarchyLabelProvider);
fHierarchyTreeViewer.setSorter(new ViewerSorter());
fHierarchyTreeViewer.setUseHashlookup(true);
fHierarchyTreeViewer.getTree().addKeyListener(getKeyAdapter());
return fHierarchyTreeViewer;
}
protected void onOpenElement(ISelection selection) {
ICElement elem= (ICElement) getSelectedElement();
if (elem != null) {
try {
EditorOpener.open(CUIPlugin.getActivePage(), elem);
} catch (CModelException e) {
CUIPlugin.log(e);
}
}
}
@Override
public void setInput(Object input) {
if (input instanceof ICElement[]) {
ICElement[] splitInput= (ICElement[]) input;
if (TypeHierarchyUI.isValidTypeInput(splitInput[0])) {
fModel.setInput(splitInput[0], splitInput[1]);
fHierarchyLabelProvider.setHideNonImplementers(splitInput[1] != null);
fHierarchyTreeViewer.setInput(fModel);
fModel.computeGraph();
updateTitle();
}
}
}
protected void updateTitle() {
setTitleText(computeTitleText());
}
private String computeTitleText() {
final ICElement input = fModel.getInput();
final ICElement member= fModel.getSelectedMember();
String elemName= member != null ? member.getElementName() : input.getElementName();
return NLS.bind(getFormatString(fModel.getHierarchyKind(), member != null), elemName);
}
private String getFormatString(int hierarchyKind, boolean forMember) {
switch (hierarchyKind) {
case THHierarchyModel.SUB_TYPE_HIERARCHY:
return forMember
? Messages.THInformationControl_titleMemberInSubHierarchy
: Messages.THInformationControl_titleSubHierarchy;
case THHierarchyModel.SUPER_TYPE_HIERARCHY:
return forMember
? Messages.THInformationControl_titleMemberInSuperHierarchy
: Messages.THInformationControl_titleSuperHierarchy;
case THHierarchyModel.TYPE_HIERARCHY:
default:
return forMember
? Messages.THInformationControl_titleMemberInHierarchy
: Messages.THInformationControl_titleHierarchy;
}
}
@Override
protected String getId() {
return "org.eclipse.cdt.internal.ui.typehierarchy.QuickHierarchy"; //$NON-NLS-1$
}
@Override
protected Object getSelectedElement() {
THNode node= selectionToNode(fHierarchyTreeViewer.getSelection());
if (node != null) {
ICElement elem= node.getElement();
if (node.isImplementor()) {
fModel.onHierarchySelectionChanged(node);
ICElement melem= fModel.getSelectedMember();
if (melem != null) {
return melem;
}
}
return elem;
}
return null;
}
private THNode selectionToNode(ISelection selection) {
if (selection instanceof IStructuredSelection) {
IStructuredSelection ss= (IStructuredSelection) selection;
for (Iterator<?> iter = ss.iterator(); iter.hasNext(); ) {
Object cand= iter.next();
if (cand instanceof THNode) {
return (THNode) cand;
}
}
}
return null;
}
@Override
public void widgetDisposed(DisposeEvent event) {
fDisposed= true;
super.widgetDisposed(event);
}
public void onEvent(int event) {
if (!fDisposed) {
switch (event) {
case THHierarchyModel.END_OF_COMPUTATION:
if (fModel.hasTrivialHierarchy()) {
fHierarchyLabelProvider.setHideNonImplementers(false);
}
fHierarchyTreeViewer.refresh();
THNode selection= fModel.getSelectionInHierarchy();
if (selection != null) {
fHierarchyTreeViewer.setSelection(new StructuredSelection(selection));
fHierarchyTreeViewer.expandToLevel(selection, 2);
}
break;
}
}
}
public void setMessage(String msg) {
}
public IWorkbenchSiteProgressService getProgressService() {
return null;
}
@Override
protected String getStatusFieldText() {
TriggerSequence sequence = getInvokingCommandTriggerSequence();
String keyName= ""; //$NON-NLS-1$
if (sequence != null)
keyName= sequence.format();
String message= ""; //$NON-NLS-1$
switch (fModel.getHierarchyKind()) {
case THHierarchyModel.TYPE_HIERARCHY:
message = Messages.THInformationControl_toggle_superTypeHierarchy_label;
break;
case THHierarchyModel.SUB_TYPE_HIERARCHY:
message = Messages.THInformationControl_toggle_typeHierarchy_label;
break;
case THHierarchyModel.SUPER_TYPE_HIERARCHY:
message = Messages.THInformationControl_toggle_subTypeHierarchy_label;
break;
default:
break;
}
return MessageFormat.format(message, new Object[] {keyName} );
}
@Override
protected void selectFirstMatch() {
Tree tree= fHierarchyTreeViewer.getTree();
Object element= findElement(tree.getItems());
if (element != null)
fHierarchyTreeViewer.setSelection(new StructuredSelection(element), true);
else
fHierarchyTreeViewer.setSelection(StructuredSelection.EMPTY);
}
protected void toggleHierarchy() {
fHierarchyTreeViewer.getTree().setRedraw(false);
switch (fModel.getHierarchyKind()) {
case THHierarchyModel.TYPE_HIERARCHY:
fModel.setHierarchyKind(THHierarchyModel.SUPER_TYPE_HIERARCHY);
break;
case THHierarchyModel.SUB_TYPE_HIERARCHY:
fModel.setHierarchyKind(THHierarchyModel.TYPE_HIERARCHY);
break;
case THHierarchyModel.SUPER_TYPE_HIERARCHY:
fModel.setHierarchyKind(THHierarchyModel.SUB_TYPE_HIERARCHY);
break;
default:
break;
}
fHierarchyTreeViewer.refresh();
fHierarchyTreeViewer.expandAll();
fHierarchyTreeViewer.getTree().setRedraw(true);
updateStatusFieldText();
updateTitle();
}
private THNode findElement(TreeItem[] items) {
for (TreeItem item2 : items) {
Object item= item2.getData();
THNode element= null;
if (item instanceof THNode) {
element= (THNode)item;
if (fStringMatcher == null)
return element;
String label= fHierarchyLabelProvider.getText(element);
if (fStringMatcher.match(label))
return element;
}
element= findElement(item2.getItems());
if (element != null)
return element;
}
return null;
}
}