/*
* Copyright 2008 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 com.google.gwt.user.client.ui.impl;
import com.google.gwt.user.client.Event;
/**
* IE version of HyperlinkImpl. IE6 and IE7 actually have different
* behavior; both have special behavior for shift-click, but IE7 also opens
* in a new tab on ctrl-click. IE6 treats ctrl-click as a standard click.
*/
public class HyperlinkImplIE extends HyperlinkImpl {
private static boolean ctrlisModifier = (getInternetExplorerVersion() >= 7);
/**
* Returns the version of Internet Explorer or a -1, (indicating the use of
* another browser). Based on code from MSDN.
* http://msdn2.microsoft.com/en-us/library/ms537509.aspx
*/
private static native int getInternetExplorerVersion() /*-{
var rv = -1; // Assume that we're not IE.
if (navigator.appName == 'Microsoft Internet Explorer') {
var ua = navigator.userAgent;
var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
if (re.exec(ua) != null)
rv = parseFloat( RegExp.$1 );
}
return rv;
}-*/;
@Override
public boolean handleAsClick(Event event) {
int mouseButtons = event.getButton();
boolean ctrl = event.getCtrlKey();
boolean shift = event.getShiftKey();
boolean middle = mouseButtons == Event.BUTTON_MIDDLE;
boolean right = mouseButtons == Event.BUTTON_RIGHT;
boolean modifiers;
if (ctrlisModifier) {
modifiers = shift || ctrl;
} else {
modifiers = shift;
}
return !modifiers && !middle && !right;
}
}