/*******************************************************************************
* Copyright © 2010, 2013 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*
*******************************************************************************/
package org.eclipse.edt.ide.rui.visualeditor.internal.views.dataview;
import java.util.List;
import org.eclipse.core.resources.IFile;
import org.eclipse.gef.dnd.TemplateTransfer;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.util.ListenerList;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.dnd.DND;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.part.Page;
import org.eclipse.ui.part.PageBook;
import org.eclipse.edt.ide.rui.visualeditor.internal.editor.EvEditor;
import org.eclipse.edt.ide.rui.visualeditor.internal.editor.EvHelp;
import org.eclipse.edt.ide.rui.visualeditor.internal.views.dataview.action.DataViewActionGroup;
import org.eclipse.edt.ide.rui.visualeditor.internal.views.dataview.model.PageDataModel;
import org.eclipse.edt.ide.rui.visualeditor.internal.views.dataview.model.PageDataModelBuilder;
import org.eclipse.edt.ide.ui.internal.editor.EGLEditor;
import org.eclipse.edt.ide.core.model.document.IEGLDocument;
import org.eclipse.edt.ide.core.model.document.IEGLModelChangeListener;
public class PageDataViewPage extends Page implements IPageDataViewPage, IEGLModelChangeListener {
public final static int DESIGN_PAGE = 0;
public final static int SOURCE_PAGE = 1;
public final static int PREVIEW_PAGE = 3;
private PageBook pageBook;
private int currentEditorPage;
private PageDataView pageDataView;
private IEGLDocument document;
private TreeViewer treeViewer;
private ListenerList selectionChangedListeners = new ListenerList();
private EvEditor evEditor;
private EGLEditor eglEditor;
private DefaultPage defaultPage;
public PageDataViewPage(IEGLDocument document, EvEditor evEditor) {
this.document = document;
this.evEditor = evEditor;
this.eglEditor = evEditor.getPageSource();
this.defaultPage = new DefaultPage();
document.addModelChangeListener(this);
}
public void showPage(int iPage){
currentEditorPage = iPage;
if( pageBook != null ) {
switch ( iPage ) {
case DESIGN_PAGE:
pageBook.showPage( treeViewer.getControl() );
updateTreeViewer();
break;
case SOURCE_PAGE:
pageBook.showPage( pageDataView.getDefaultPage().getControl() );
break;
case PREVIEW_PAGE:
pageBook.showPage( pageDataView.getDefaultPage().getControl() );
break;
}
}
}
/*
* @see ISelectionProvider#addSelectionChangedListener(ISelectionChangedListener)
*/
public void addSelectionChangedListener(ISelectionChangedListener listener) {
selectionChangedListeners.add(listener);
if (treeViewer != null) {
treeViewer.addPostSelectionChangedListener(listener);
}
}
/*
* @see ISelectionProvider#removeSelectionChangedListener(ISelectionChangedListener)
*/
public void removeSelectionChangedListener(ISelectionChangedListener listener) {
selectionChangedListeners.remove(listener);
if (treeViewer != null) {
treeViewer.removePostSelectionChangedListener(listener);
}
}
/* (non-Javadoc)
* @see org.eclipse.ui.part.IPage#createControl(org.eclipse.swt.widgets.Composite)
*/
public void createControl(Composite parent) {
if(eglEditor == null){
eglEditor = evEditor.getPageSource();
}
pageBook = (PageBook)parent;
PageDataModel model = PageDataModelBuilder.getInstance().create(document.getNewModelEGLFile(), eglEditor);
treeViewer = new TreeViewer(parent, SWT.H_SCROLL | SWT.V_SCROLL);
treeViewer.setContentProvider(new PageDataViewContentProvider());
treeViewer.setLabelProvider(new PageDataViewLabelProvider());
DataViewActionGroup dataViewActionGroup = new DataViewActionGroup(treeViewer, evEditor);
dataViewActionGroup.fillContextMenu(new MenuManager());
Transfer[] transfers = new Transfer[] {TemplateTransfer.getInstance()};
treeViewer.addDragSupport(DND.DROP_NONE, transfers, new PageDataViewDragAdapter(this, treeViewer.getTree()));
treeViewer.setInput(model);
treeViewer.expandToLevel(10);
EvHelp.setHelp( parent, EvHelp.DATA_VIEW );
}
public void dispose() {
if (eglEditor == null)
return;
if (document != null)
document.removeModelChangeListener(this);
eglEditor.outlinePageClosed();
eglEditor = null;
selectionChangedListeners.clear();
selectionChangedListeners = null;
treeViewer = null;
super.dispose();
}
public IEGLDocument getDocument() {
return document;
}
public EGLEditor getEditor() {
return eglEditor;
}
// Select the specific part in the outline view
public void select(Object reference) {
if (treeViewer != null) {
ISelection s = treeViewer.getSelection();
if (s instanceof IStructuredSelection) {
IStructuredSelection ss = (IStructuredSelection) s;
List elements = ss.toList();
if (!elements.contains(reference)) {
s = (reference == null ? StructuredSelection.EMPTY : new StructuredSelection(reference));
treeViewer.setSelection(s, true);
}
}
}
}
private Reconciler reconciler = new Reconciler();
private boolean reconcilerScheduled;
private static final int DELAY = 2000;
private class Reconciler implements Runnable {
public void run() {
long currentTime = System.currentTimeMillis();
if (currentTime - document.getLastUpdateTime() < DELAY) {
if (!treeViewer.getControl().isDisposed()) {
treeViewer.getControl().getDisplay().timerExec(DELAY, reconciler);
}
return;
}
if (!treeViewer.getControl().isDisposed()) {
treeViewer.getControl().setRedraw(false);
document.reconcile();
treeViewer.refresh(document.getNewModelEGLFile(),true);
treeViewer.getControl().setRedraw(true);
}
reconcilerScheduled = false;
}
}
public void modelChanged() {
if(currentEditorPage == DESIGN_PAGE){
updateTreeViewer();
}
}
private void updateTreeViewer(){
if (!reconcilerScheduled && treeViewer != null && !treeViewer.getControl().isDisposed()) {
PageDataModel model = PageDataModelBuilder.getInstance().create(document.getNewModelEGLFile(), eglEditor);
treeViewer.setInput(model);
treeViewer.expandToLevel(10);
treeViewer.getControl().getDisplay().timerExec(DELAY, reconciler);
}
}
public IEditorInput getEditorInput() {
return eglEditor.getEditorInput();
}
public void setInput(IEGLDocument newDocument) {
if (document != null)
document.removeModelChangeListener(this);
document = newDocument;
if (document != null) {
document.addModelChangeListener(this);
}
if (treeViewer != null) {
treeViewer.setInput(newDocument.getNewModelEGLFile());
}
}
public void refresh() {
if (treeViewer != null) {
document.reconcile();
treeViewer.refresh(document.getNewModelEGLFile(),true);
}
}
public IFile getFile() {
return ((IFileEditorInput)getEditorInput()).getFile();
}
public ISelection getSelection() {
if (treeViewer == null) {
return StructuredSelection.EMPTY;
}
return treeViewer.getSelection();
}
public void setSelection(ISelection selection) {
if (treeViewer != null) {
treeViewer.setSelection(selection);
}
}
@Override
public Control getControl() {
Control control = null;
if (treeViewer == null) {
return control;
}
switch ( evEditor.getPageIndex() ) {
case DESIGN_PAGE:
control = treeViewer.getControl();
break;
case SOURCE_PAGE:
control = defaultPage.getControl();
break;
case PREVIEW_PAGE:
control = defaultPage.getControl();
break;
}
return control;
}
@Override
public void setFocus() {
treeViewer.getControl().setFocus();
}
public void setPageDataView(PageDataView pageDataView) {
this.pageDataView = pageDataView;
}
}