/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.doodad.selection;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.StyleInjector;
import com.google.gwt.dom.client.Text;
import org.waveprotocol.wave.client.common.util.DomHelper;
import org.waveprotocol.wave.client.editor.impl.NodeManager;
import org.waveprotocol.wave.model.document.util.FilteredView.Skip;
/**
* DOM implementation of a caret view
*
* @author danilatos@google.com (Daniel Danilatos)
*/
public class CaretWidget implements CaretView {
/** Resources for the renderer. */
private static final CaretMarkerResources RESOURCES = GWT.create(CaretMarkerResources.class);
public static final CaretMarkerResources.Css CSS = RESOURCES.css();
static {
StyleInjector.inject(CSS.getText());
}
private final Element caretMarkerElement;
private final Element compositionStateSpan;
private final Element outerSpan;
private final Element innerSpan;
private final Text nameTextNode;
/**
* Build a DOM element for storing a single user selection element.
*/
public CaretWidget() {
// TODO(danilatos): UiBinder?
caretMarkerElement = Document.get().createSpanElement();
compositionStateSpan = Document.get().createSpanElement();
caretMarkerElement.appendChild(compositionStateSpan);
compositionStateSpan.setClassName(CSS.compositionState());
outerSpan = Document.get().createSpanElement();
innerSpan = Document.get().createSpanElement();
caretMarkerElement.appendChild(outerSpan);
// Text node must come first, or rendering glitches ensue.
// Also, there is code that depends on it being the first child!
nameTextNode = Document.get().createTextNode("?");
outerSpan.appendChild(nameTextNode);
outerSpan.appendChild(innerSpan);
outerSpan.setClassName(CSS.outer());
innerSpan.setClassName(CSS.inner());
DomHelper.makeUnselectable(caretMarkerElement);
NodeManager.setTransparency(caretMarkerElement, Skip.DEEP);
}
@Override
public void setName(String name) {
nameTextNode.setData(name);
}
@Override
public void setCompositionState(String state) {
compositionStateSpan.setInnerText(state);
}
@Override
public void setColor(RgbColor color) {
String cssColour = color.getCssColor();
compositionStateSpan.getStyle().setBorderColor(cssColour);
outerSpan.getStyle().setBackgroundColor(cssColour);
innerSpan.getStyle().setBorderColor(cssColour);
}
public Element getElement() {
return caretMarkerElement;
}
}