/**
* Copyright 2009 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.selection.html;
import org.waveprotocol.wave.client.common.util.OffsetPosition;
import org.waveprotocol.wave.model.util.IntRange;
/**
* IE implementation of SelectionCoordinatesHelper
*
*/
public class SelectionCoordinatesHelperIEImpl implements SelectionCoordinatesHelper {
@Override
public OffsetPosition getNearestElementPosition() {
final JsTextRangeIE textRange = JsSelectionIE.get().createRange();
return new OffsetPosition(textRange.parentElement().getOffsetLeft(), textRange.parentElement()
.getOffsetTop(), textRange.parentElement() == null ? null : textRange.parentElement()
.getOffsetParent());
}
@Override
public OffsetPosition getFocusPosition() {
final JsTextRangeIE textRange = JsSelectionIE.get().createRange();
if (textRange == null) {
return null;
} else {
return new OffsetPosition(textRange.getOffsetLeft(), textRange.getOffsetTop(), null);
}
}
@Override
public OffsetPosition getAnchorPosition() {
// Returning the focus for the anchor will make it look like the selection
// is collapsed which should be a fairly safe fallback behavior when there
// is no good way to determine the actual focus.
return getFocusPosition();
}
@Override
public IntRange getFocusBounds() {
// NOTE(user): Consider returning the bottom here as well in the range.
return new IntRange(getFocusPosition().top);
}
}