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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.motorola.studio.android.codesnippets;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.javaeditor.JavaSourceViewer;
import org.eclipse.jdt.ui.PreferenceConstants;
import org.eclipse.jdt.ui.text.JavaSourceViewerConfiguration;
import org.eclipse.jdt.ui.text.JavaTextTools;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.jface.window.ToolTip;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.events.ControlAdapter;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.wst.common.snippets.core.ISnippetItem;
import com.motorola.studio.android.codesnippets.i18n.AndroidSnippetsNLS;
/**
* Customized tooltip for snippets in Snippet View.
* It's intended to display the snippet preview
*
*/
@SuppressWarnings("restriction")
public class AndroidSnippetsTooltip extends ToolTip
{
/*
* The snippet item to be displayed in the tooltip
*/
private final ISnippetItem item;
/**
* Constructor
*
* @param item the snippet item to be displayed
* @param control
*/
public AndroidSnippetsTooltip(ISnippetItem item, Control control)
{
super(control, NO_RECREATE, true);
this.item = item;
}
/**
* Display the snippet preview by using a JAVA Source Viewer, which is
* used to highlight the code
*
* @see org.eclipse.jface.window.ToolTip#createToolTipContentArea(org.eclipse.swt.widgets.Event, org.eclipse.swt.widgets.Composite)
*/
@Override
protected Composite createToolTipContentArea(Event event, Composite parent)
{
// the main composite
Composite mainComposite = new Composite(parent, SWT.NULL);
mainComposite.setLayout(new GridLayout(1, true));
/*
* snippet preview label
*/
Label textElem = new Label(mainComposite, SWT.LEFT);
textElem.setText(AndroidSnippetsNLS.UI_Snippet_Preview);
textElem.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, true, false, 1, 1));
/*
* JAVA source viewer
*/
final ScrolledComposite scroll =
new ScrolledComposite(mainComposite, SWT.H_SCROLL | SWT.V_SCROLL);
scroll.setLayout(new FillLayout());
// create scroll layout which receives values to limit its area of display
GridData scrollLayoutData = new GridData(SWT.FILL, SWT.FILL, false, false, 1, 1);
Rectangle visibleArea = parent.getDisplay().getActiveShell().getMonitor().getClientArea();
scrollLayoutData.heightHint = visibleArea.height / 3;
scrollLayoutData.widthHint = visibleArea.width / 3;
scroll.setLayoutData(scrollLayoutData);
final Composite javaSourceViewerComposite = new Composite(scroll, SWT.NULL);
javaSourceViewerComposite.setLayout(new FillLayout());
int styles = SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION;
Document document = new Document(item.getContentString());
IPreferenceStore store = JavaPlugin.getDefault().getCombinedPreferenceStore();
JavaTextTools javaTextTools = JavaPlugin.getDefault().getJavaTextTools();
SourceViewer javaSourceViewer =
new JavaSourceViewer(javaSourceViewerComposite, null, null, false, styles, store);
javaSourceViewer.configure(new JavaSourceViewerConfiguration(javaTextTools
.getColorManager(), store, null, null));
javaSourceViewer.getControl().setFont(
JFaceResources.getFont(PreferenceConstants.EDITOR_TEXT_FONT));
javaTextTools.setupJavaDocumentPartitioner(document);
javaSourceViewer.setDocument(document);
javaSourceViewer.setEditable(false);
// set up scroll
scroll.setContent(javaSourceViewerComposite);
scroll.setExpandHorizontal(true);
scroll.setExpandVertical(true);
scroll.addControlListener(new ControlAdapter()
{
@Override
public void controlResized(ControlEvent e)
{
scroll.setMinSize(javaSourceViewerComposite.computeSize(SWT.DEFAULT, SWT.DEFAULT));
}
});
return mainComposite;
}
/**
* Get the snippet item being displayed
*
* @return the snippet item being displayed
*/
public ISnippetItem getItem()
{
return item;
}
}
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