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/*******************************************************************************
* Copyright (c) 2006 IBM Corporation.
* 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 - Jeff Briggs, Henry Hughes, Ryan Morse
*******************************************************************************/
package org.eclipse.linuxtools.systemtap.ui.ide.views;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.linuxtools.systemtap.ui.editor.RecentFileMenuManager;
import org.eclipse.linuxtools.systemtap.ui.ide.internal.IDEPlugin;
import org.eclipse.linuxtools.systemtap.ui.structures.TreeNode;
import org.eclipse.linuxtools.systemtap.ui.structures.listeners.IUpdateListener;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.part.ViewPart;
/**
* The parent class of the Kernel Source browser, and grandparent of the Tapset browsers.
* Contains code common to all three of those classes.
* @author Ryan Morse
* @see org.eclipse.linuxtools.systemtap.ui.ide.views.KernelBrowserView
* @see org.eclipse.linuxtools.systemtap.ui.ide.views.FunctionBrowserView
* @see org.eclipse.linuxtools.systemtap.ui.ide.views.ProbeAliasBrowserView
*/
public abstract class BrowserView extends ViewPart {
protected TreeViewer viewer;
public BrowserView() {
super();
}
/**
* Provides an interface for the TreeViewer to interact with the internal TreeNode data structure.
* @author Ryan Morse
*
*/
class ViewContentProvider implements IStructuredContentProvider, ITreeContentProvider {
public void inputChanged(Viewer v, Object oldInput, Object newInput) {}
public void dispose() {}
public Object[] getElements(Object parent) {
return getChildren(parent);
}
public Object getParent(Object child) {
return null;
}
public Object[] getChildren(Object par) {
TreeNode parent = ((TreeNode)par);
Object[] children = new Object[parent.getChildCount()];
for(int i=0; i<children.length; i++) {
children[i] = parent.getChildAt(i);
}
return children;
}
public boolean hasChildren(Object parent) {
return ((TreeNode)parent).getChildCount() > 0;
}
}
/**
* Provides the icon and text for each entry in the tapset tree.
* @author Ryan Morse
*/
class ViewLabelProvider extends LabelProvider {
public String getText(Object obj) {
return obj.toString();
}
public Image getImage(Object obj) {
TreeNode treeObj = (TreeNode)obj;
Image img;
String item = treeObj.getData().toString();
img = PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_ELEMENT);
if (treeObj.getChildCount() > 0)
img = PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FOLDER);
//Kernel Source
if(item.endsWith(".c"))
img = IDEPlugin.getImageDescriptor("icons/files/file_c.gif").createImage();
if(item.endsWith(".h"))
img = IDEPlugin.getImageDescriptor("icons/files/file_h.gif").createImage();
//Functions
if(item.endsWith(")") && !item.endsWith("\")")) {
item = item.substring(0, item.indexOf("(")).trim();
if(item.endsWith(":long"))
img = IDEPlugin.getImageDescriptor("icons/vars/var_long.gif").createImage();
else if(item.endsWith(":string"))
img = IDEPlugin.getImageDescriptor("icons/vars/var_str.gif").createImage();
else //if(item.endsWith(":unknown"))
img = IDEPlugin.getImageDescriptor("icons/vars/var_void.gif").createImage();
} else {
//Probes
if(item.startsWith("probe"))
img = IDEPlugin.getImageDescriptor("icons/misc/probe_obj.gif").createImage();
//Probe variables
if(item.endsWith(":long"))
img = IDEPlugin.getImageDescriptor("icons/vars/var_long.gif").createImage();
else if(item.endsWith(":string"))
img = IDEPlugin.getImageDescriptor("icons/vars/var_str.gif").createImage();
else if(item.endsWith(":unknown"))
img = IDEPlugin.getImageDescriptor("icons/vars/var_unk.gif").createImage();
}
return img;
}
}
public void createPartControl(Composite parent) {
parent.getShell().setCursor(new Cursor(parent.getShell().getDisplay(), SWT.CURSOR_WAIT));
viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
viewer.setContentProvider(new ViewContentProvider());
viewer.setLabelProvider(new ViewLabelProvider());
RecentFileMenuManager.getInstance().registerActionBar(getViewSite().getActionBars());
}
public TreeViewer getViewer() {
return viewer;
}
public void setFocus() {
viewer.getControl().setFocus();
}
public void dispose() {
super.dispose();
viewer = null;
}
abstract void refresh();
protected class ViewUpdater implements IUpdateListener {
public void handleUpdateEvent() {
viewer.getControl().getDisplay().asyncExec(new Runnable() {
public void run() {
refresh();
}
});
}
}
}
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