com.nokia.tools.s60.wizards.PluginContentViewer.java Source code

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Here is the source code for com.nokia.tools.s60.wizards.PluginContentViewer.java

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/*
* Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies). 
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/
package com.nokia.tools.s60.wizards;

import org.eclipse.jface.viewers.IInputSelectionProvider;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.events.KeyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;

public class PluginContentViewer implements IInputSelectionProvider {
    private TreeViewer treeViewer;

    private TableViewer tableViewer;

    private boolean updateColSizes = true;

    public PluginContentViewer(Composite parent) {
        SashForm sash = new SashForm(parent, SWT.NONE);
        GridData gd = new GridData(GridData.FILL_BOTH);
        gd.minimumHeight = 28;
        sash.setLayoutData(gd);

        treeViewer = new TreeViewer(sash, SWT.BORDER);
        PluginContentProvider provider = new PluginContentProvider();
        treeViewer.setContentProvider(provider);
        treeViewer.setLabelProvider(new PluginLabelProvider(provider));
        treeViewer.setInput(PluginContentProvider.EMPTY_INPUT);
        treeViewer.addSelectionChangedListener(new ISelectionChangedListener() {

            /*
             * (non-Javadoc)
             * 
             * @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent)
             */
            public void selectionChanged(SelectionChangedEvent event) {
                ISelection selection = event.getSelection();
                if (selection instanceof IStructuredSelection) {
                    Object input = ((IStructuredSelection) selection).getFirstElement();
                    if (input != null) {
                        tableViewer.setInput(input);
                    }
                }
            }
        });

        tableViewer = new TableViewer(sash, SWT.FULL_SELECTION | SWT.BORDER);
        tableViewer.setContentProvider(new PluginPropertiesContentProvider(provider));
        tableViewer.setLabelProvider(new PluginPropertiesLabelProvider(provider));
        Table table = tableViewer.getTable();
        final TableColumn colPro = new TableColumn(table, SWT.LEFT, 0);
        colPro.setText("Property");

        final TableColumn colVal = new TableColumn(table, SWT.LEFT, 1);
        colVal.setText("Value");

        table.setHeaderVisible(true);
        table.setLinesVisible(true);

        tableViewer.getTable().addListener(SWT.Resize, new Listener() {
            public void handleEvent(Event event) {
                if (updateColSizes) {
                    Table tbl = tableViewer.getTable();
                    int w = tbl.getClientArea().width;
                    int c1 = w / 3 * 2;
                    int c2 = w - c1;
                    updateColSizes = false;
                    colPro.setWidth(c2);
                    colVal.setWidth(c1);
                    updateColSizes = true;
                }
            }
        });

        sash.setWeights(new int[] { 50, 50 });
    }

    public void setPlugin(Object plugin) {
        if (plugin == null)
            treeViewer.setInput(PluginContentProvider.EMPTY_INPUT);
        else {
            treeViewer.setInput(plugin);
            treeViewer.expandToLevel(2);
            treeViewer.setSelection(new StructuredSelection(PluginContentProvider.PLUGIN_ROOT));
        }
        tableViewer.setInput(null);
    }

    public PluginContentProvider getContentProvider() {
        return (PluginContentProvider) treeViewer.getContentProvider();
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.ISelectionProvider#addSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener)
     */
    public void addSelectionChangedListener(ISelectionChangedListener listener) {
        treeViewer.addSelectionChangedListener(listener);
    }

    public void addKeyListener(KeyListener listener) {
        treeViewer.getTree().addKeyListener(listener);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.ISelectionProvider#getSelection()
     */
    public ISelection getSelection() {
        return treeViewer.getSelection();
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.ISelectionProvider#removeSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener)
     */
    public void removeSelectionChangedListener(ISelectionChangedListener listener) {
        treeViewer.removeSelectionChangedListener(listener);

    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.ISelectionProvider#setSelection(org.eclipse.jface.viewers.ISelection)
     */
    public void setSelection(ISelection selection) {
        treeViewer.setSelection(selection);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.IInputProvider#getInput()
     */
    public Object getInput() {
        return treeViewer.getInput();
    }
}