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ReportMultiBookPage.java
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ReportMultiBookPage.java
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/*************************************************************************************
* Copyright (c) 2004 Actuate Corporation and others.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* https://www.eclipse.org/legal/epl-2.0/.
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Actuate Corporation - Initial implementation.
************************************************************************************/
package org.eclipse.birt.report.designer.internal.ui.editors.schematic;
import java.util.ArrayList;
import org.eclipse.birt.report.designer.internal.ui.util.UIUtil;
import org.eclipse.gef.ui.views.palette.PalettePage;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IStatusLineManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.forms.editor.IFormPage;
import org.eclipse.ui.part.IPageBookViewPage;
import org.eclipse.ui.part.IPageSite;
import org.eclipse.ui.part.Page;
import org.eclipse.ui.part.PageBook;
import org.eclipse.ui.views.contentoutline.IContentOutlinePage;
public class ReportMultiBookPage extends Page implements PalettePage, IContentOutlinePage, ISelectionChangedListener {
private PageBook pagebook;
private ISelection selection;
private ArrayList listeners = new ArrayList();
private IPageBookViewPage currentPage;
private IPageBookViewPage emptyPage;
private IActionBars actionBars;
private ISelectionChangedListener selectionChangedListener;
public ReportMultiBookPage() {
selectionChangedListener = new ISelectionChangedListener() {
@Override
public void selectionChanged(SelectionChangedEvent event) {
ReportMultiBookPage.this.getSite().getSelectionProvider().setSelection(event.getSelection());
}
};
}
public void addFocusListener(FocusListener listener) {
}
@Override
public void addSelectionChangedListener(ISelectionChangedListener listener) {
listeners.add(listener);
}
@Override
public void createControl(Composite parent) {
pagebook = new PageBook(parent, SWT.NONE);
}
@Override
public void dispose() {
if (pagebook != null && !pagebook.isDisposed()) {
pagebook.dispose();
}
if (emptyPage != null) {
emptyPage.dispose();
emptyPage = null;
}
if (currentPage != null) {
currentPage.dispose();
}
currentPage = null;
pagebook = null;
listeners = null;
}
public boolean isDisposed() {
return listeners == null;
}
@Override
public Control getControl() {
return pagebook;
}
public PageBook getPagebook() {
return pagebook;
}
@Override
public ISelection getSelection() {
return selection;
}
@Override
public void makeContributions(IMenuManager menuManager, IToolBarManager toolBarManager,
IStatusLineManager statusLineManager) {
}
public void removeFocusListener(FocusListener listener) {
}
@Override
public void removeSelectionChangedListener(ISelectionChangedListener listener) {
listeners.remove(listener);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(
* org.eclipse.jface.viewers.SelectionChangedEvent)
*/
@Override
public void selectionChanged(SelectionChangedEvent event) {
setSelection(event.getSelection());
StructuredSelection selection = (StructuredSelection) event.getSelection();
Object obj = selection.getFirstElement();
if (obj instanceof IFormPage) {
Object palette = ((IFormPage) obj).getAdapter(PalettePage.class);
setActivePage((IPageBookViewPage) palette);
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.part.Page#setActionBars(org.eclipse.ui.IActionBars)
*/
@Override
public void setActionBars(IActionBars actionBars) {
this.actionBars = actionBars;
if (currentPage != null) {
setActivePage(currentPage);
}
}
public IActionBars getActionBars() {
return actionBars;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.part.Page#setFocus()
*/
@Override
public void setFocus() {
if (currentPage != null) {
if (!UIUtil.containsFocusControl(currentPage.getControl())) {
currentPage.setFocus();
}
}
}
private IPageBookViewPage getEmptyPage() {
if (emptyPage == null) {
emptyPage = new EmptyPage();
}
return emptyPage;
}
public IPageBookViewPage getCurrentPage() {
return currentPage;
}
public void setActivePage(IPageBookViewPage page) {
IPageBookViewPage previousPage = null;
if (page == null) {
page = getEmptyPage();
}
// if ( previousPage instanceof IReportPageBookViewPage )
// {
// ( (IReportPageBookViewPage) previousPage ).getSelectionProvider( )
// .removeSelectionChangedListener( selectionChangedListener );
// }
if (currentPage != null && currentPage != getEmptyPage() && !(currentPage instanceof PalettePage)
&& page != currentPage) {
// currentPage.getControl( ).dispose( );
// currentPage.dispose( );
previousPage = currentPage;
}
this.currentPage = page;
if (pagebook == null) {
// still not being made
return;
}
Control control = null;
try {
control = page.getControl();
} catch (Exception e) {
}
if (control == null || control.isDisposed()) {
if (page.getSite() == null) {
try {
page.init(getSite());
} catch (PartInitException e) {
page = getEmptyPage();
}
}
// first time
page.createControl(pagebook);
page.setActionBars(getActionBars());
control = page.getControl();
if (page instanceof IReportPageBookViewPage) {
((IReportPageBookViewPage) page).getSelectionProvider()
.addSelectionChangedListener(selectionChangedListener);
}
getSite().setSelectionProvider(this);
}
pagebook.showPage(control);
this.currentPage = page;
if (previousPage != null && previousPage.getControl() != null && !previousPage.getControl().isDisposed()) {
final IPageBookViewPage disposePage = previousPage;
Display.getDefault().asyncExec(new Runnable() {
@Override
public void run() {
disposePage.getControl().dispose();
disposePage.dispose();
}
});
}
}
/**
* Set the selection.
*/
@Override
public void setSelection(ISelection selection) {
this.selection = selection;
if (listeners == null) {
return;
}
SelectionChangedEvent e = new SelectionChangedEvent(this, selection);
for (int i = 0; i < listeners.size(); i++) {
((ISelectionChangedListener) listeners.get(i)).selectionChanged(e);
}
}
public static class EmptyPage implements IPageBookViewPage {
private Composite control;
private IPageSite site;
@Override
public IPageSite getSite() {
return site;
}
@Override
public void init(IPageSite site) throws PartInitException {
this.site = site;
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.ui.part.IPage#createControl(org.eclipse.swt.widgets.Composite )
*/
@Override
public void createControl(Composite parent) {
control = new Composite(parent, SWT.NULL);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.part.IPage#dispose()
*/
@Override
public void dispose() {
control = null;
site = null;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.part.IPage#getControl()
*/
@Override
public Control getControl() {
return control;
}
@Override
public void setActionBars(IActionBars actionBars) {
}
@Override
public void setFocus() {
}
}
}