ar.com.tadp.xml.rinzo.core.outline.XMLOutlinePage.java Source code

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Here is the source code for ar.com.tadp.xml.rinzo.core.outline.XMLOutlinePage.java

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/*****************************************************************************
 * This file is part of Rinzo
 *
 * Author: Claudio Cancinos
 * WWW: https://sourceforge.net/projects/editorxml
 * Copyright (C): 2008, Claudio Cancinos
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; If not, see <http://www.gnu.org/licenses/>
 ****************************************************************************/
package ar.com.tadp.xml.rinzo.core.outline;

import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IStatusLineManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.views.contentoutline.ContentOutlinePage;

import ar.com.tadp.xml.rinzo.core.RinzoXMLEditor;
import ar.com.tadp.xml.rinzo.core.ThreadExecutorService;
import ar.com.tadp.xml.rinzo.core.model.IModelListener;
import ar.com.tadp.xml.rinzo.core.model.XMLNode;
import ar.com.tadp.xml.rinzo.core.model.XMLTreeModel;
import ar.com.tadp.xml.rinzo.core.outline.actions.CollapseAllAction;
import ar.com.tadp.xml.rinzo.core.outline.actions.ShowFullNameAction;

/**
 * Page to display the Outline content for an XML document.
 * 
 * @author ccancinos
 */
public class XMLOutlinePage extends ContentOutlinePage implements IModelListener {
    private RinzoXMLEditor editor;
    private XMLTreeModel treeModel;
    private XMLOutlineLabelProvider outlineLabelProvider;
    private boolean dirty;
    private OutlineUpdater updater;

    public XMLOutlinePage(RinzoXMLEditor editor) {
        this.editor = editor;
        this.outlineLabelProvider = new XMLOutlineLabelProvider(this.editor.getLineSeparator());
    }

    public void createControl(Composite parent) {
        super.createControl(parent);
        TreeViewer viewer = getTreeViewer();
        viewer.setContentProvider(new XMLOutlineContentProvider());
        viewer.setLabelProvider(this.outlineLabelProvider);
        // FIXME Si no lo pongo dos veces, cuando abre el outline por primera
        // vez, no muestra el texto del root. Ma perque??
        viewer.setInput(getInput());
        viewer.setInput(getInput());
        initListeners(viewer);

        this.updater = new OutlineUpdater(this);
        ThreadExecutorService.getInstance().execute(this.updater);
    }

    public void dispose() {
        super.dispose();
        this.updater.setStop();
    }

    private XMLNode getInput() {
        return getModel().getTree();
    }

    private XMLTreeModel getModel() {
        if (treeModel == null) {
            treeModel = getEditor().getModel();
            treeModel.addModelListener(this);
        }
        return treeModel;
    }

    public RinzoXMLEditor getEditor() {
        return editor;
    }

    public void update() {
        TreeViewer viewer = getTreeViewer();
        if (viewer != null) {
            Control control = viewer.getControl();
            if (control != null && !control.isDisposed()) {
                control.setRedraw(false);
                viewer.setInput(getInput());
                control.setRedraw(true);
            }
        }
    }

    protected void initListeners(TreeViewer viewer) {
        viewer.addDoubleClickListener(new IDoubleClickListener() {
            public void doubleClick(DoubleClickEvent event) {
                handleDoubleClick(event);
            }
        });
    }

    protected void handleDoubleClick(DoubleClickEvent event) {
        IStructuredSelection selection = (IStructuredSelection) event.getSelection();
        Object element = selection.getFirstElement();
        TreeViewer viewer = this.getTreeViewer();
        if (viewer.isExpandable(element)) {
            viewer.setExpandedState(element, !viewer.getExpandedState(element));
        }
    }

    public void makeContributions(IMenuManager menuManager, IToolBarManager toolBarManager,
            IStatusLineManager statusLineManager) {
        toolBarManager.add(new CollapseAllAction(this.getTreeViewer()));
        toolBarManager.add(new ShowFullNameAction(this, this.outlineLabelProvider));
    }

    public void modelAboutToBeChanged(XMLNode xmlnode) {
    }

    public void modelChanged(XMLNode rootNode) {
        this.setDirty(true);
    }

    public synchronized void setDirty(boolean b) {
        this.dirty = b;
    }

    public synchronized boolean isDirty() {
        return this.dirty;
    }

    public void internalUpdate() {
        if (getControl() == null) {
            return;
        }

        Display d = getControl().getDisplay();
        if (d != null) {
            d.asyncExec(new Runnable() {
                public void run() {
                    TreeViewer viewer = getTreeViewer();
                    if (viewer != null) {
                        Control control = viewer.getControl();
                        if (control != null && !control.isDisposed()) {
                            control.setRedraw(false);
                            viewer.setInput(getInput());
                            control.setRedraw(true);
                        }
                    }
                }
            });
        }
    }

}