org.eclipse.handly.internal.examples.basic.ui.outline2.FooOutlinePopup.java Source code

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Here is the source code for org.eclipse.handly.internal.examples.basic.ui.outline2.FooOutlinePopup.java

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/*******************************************************************************
 * Copyright (c) 2014 1C LLC.
 * 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:
 *     Vladimir Piskarev (1C) - initial API and implementation
 *******************************************************************************/
package org.eclipse.handly.internal.examples.basic.ui.outline2;

import java.text.MessageFormat;

import org.eclipse.handly.internal.examples.basic.ui.FooContentProvider;
import org.eclipse.handly.internal.examples.basic.ui.FooLabelProvider;
import org.eclipse.handly.ui.viewer.ProblemMarkerLabelDecorator;
import org.eclipse.handly.xtext.ui.quickoutline.HandlyXtextOutlinePopup;
import org.eclipse.jface.bindings.keys.KeyStroke;
import org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider;
import org.eclipse.jface.viewers.IBaseLabelProvider;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.jface.viewers.TreeViewer;

import com.google.inject.Inject;

/**
 * Outline popup for the Foo editor.
 */
public class FooOutlinePopup extends HandlyXtextOutlinePopup {
    private boolean compactView;

    @Inject
    private FooContentProvider contentProvider;
    @Inject
    private FooLabelProvider labelProvider;
    @Inject
    private CompactViewFilter compactViewFilter;

    @Override
    protected ITreeContentProvider getContentProvider() {
        return contentProvider;
    }

    @Override
    protected IBaseLabelProvider getLabelProvider() {
        return new DecoratingStyledCellLabelProvider(labelProvider, new ProblemMarkerLabelDecorator(), null);
    }

    @Override
    protected void changeOutlineMode() {
        compactView = !compactView;

        TreeViewer treeViewer = getTreeViewer();
        treeViewer.getControl().setRedraw(false);
        if (getPatternMatcher() == null) {
            TreePath[] treePaths = treeViewer.getExpandedTreePaths();
            updateFilter();
            treeViewer.setExpandedTreePaths(treePaths);
        } else {
            updateFilter();
            treeViewer.expandAll();
        }
        treeViewer.getControl().setRedraw(true);

        // reveal selection
        Object selectedElement = getSelectedElement();
        if (selectedElement != null)
            treeViewer.reveal(selectedElement);
        else
            selectFirstMatch();
    }

    @Override
    protected void updateInfoText() {
        KeyStroke invokingKeyStroke = getInvokingKeyStroke();
        if (invokingKeyStroke == null)
            super.updateInfoText();
        else
            setInfoText(MessageFormat.format(
                    compactView ? "Press ''{0}'' to show Full View" : "Press ''{0}'' to show Compact View",
                    invokingKeyStroke.format()));
    }

    private void updateFilter() {
        if (compactView)
            getTreeViewer().addFilter(compactViewFilter);
        else
            getTreeViewer().removeFilter(compactViewFilter);
    }
}