/**
* Copyright 2011 Google Inc.
*
* 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 org.waveprotocol.wave.client.editor.toolbar;
import org.waveprotocol.wave.client.editor.EditorContext;
import org.waveprotocol.wave.client.editor.content.ContentElement;
import org.waveprotocol.wave.client.editor.content.ContentNode;
import org.waveprotocol.wave.client.editor.content.paragraph.Paragraph;
import org.waveprotocol.wave.client.widget.toolbar.buttons.ToolbarClickButton;
import org.waveprotocol.wave.model.document.indexed.LocationMapper;
import org.waveprotocol.wave.model.document.util.Range;
/**
* A {@link ToolbarClickButton.Listener} which applies a styling to a
* paragraph using {@link Paragraph#traverse}.
* <p>
* See {@link org.waveprotocol.wave.client.wavepanel.impl.toolbar.EditToolbar}
* for example uses.
*
* @author kalman@google.com (Benjamin Kalman)
*/
public class ParagraphTraversalController implements ToolbarClickButton.Listener {
private final EditorContext editor;
private final ContentElement.Action action;
public ParagraphTraversalController(EditorContext editor, ContentElement.Action action) {
this.editor = editor;
this.action = action;
}
@Override
public void onClicked() {
final Range range = editor.getSelectionHelper().getOrderedSelectionRange();
if (range != null) {
editor.undoableSequence(new Runnable(){
@Override public void run() {
LocationMapper<ContentNode> locator = editor.getDocument();
Paragraph.traverse(locator, range.getStart(), range.getEnd(), action);
}
});
}
}
}