user/src/com/google/gwt/dom/client/DOMImplMozilla.java - gwt - Git at Google

 /*
  * 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.dom.client;

 /**
  * Mozilla implementation of StandardBrowser.
  */
 class DOMImplMozilla extends DOMImplStandard {

   private static int cachedGeckoVersion = -2;

   private static int getGeckoVersion() {
     if (cachedGeckoVersion == -2) {
       cachedGeckoVersion = getNativeGeckoVersion();
     }
     return cachedGeckoVersion;
   }

   private static native int getNativeGeckoVersion() /*-{
     var result = /rv:([0-9]+)\.([0-9]+)(\.([0-9]+))?.*?/.exec(navigator.userAgent.toLowerCase());
     if (result && result.length >= 3) {
       var version = (parseInt(result[1]) * 1000000) + (parseInt(result[2]) * 1000) +
         parseInt(result.length >= 5 && !isNaN(result[4]) ? result[4] : 0);
       return version;
     }
     return -1; // not gecko
   }-*/;

   /**
    * Return true if using Gecko 1.9 (Firefox 3) or later.
    *
    * @return true if using Gecko 1.9 (Firefox 3) or later
    */
   private static boolean isGecko19() {
     int geckoVersion = getGeckoVersion();
     return (geckoVersion != -1) && (geckoVersion >= 1009000);
   }

   /**
    * Return true if using Gecko 1.9.0 (Firefox 3) or earlier.
    *
    * @return true if using Gecko 1.9.0 (Firefox 3) or earlier
    */
   private static boolean isGecko190OrBefore() {
     int geckoVersion = getGeckoVersion();
     return (geckoVersion != -1) && (geckoVersion <= 1009000);
   }

   /**
    * Return true if using Gecko 1.9.1 (Firefox 3.5) or earlier.
    *
    * @return true if using Gecko 1.9.1 (Firefox 3.5) or earlier
    */
   private static boolean isGecko191OrBefore() {
     int geckoVersion = getGeckoVersion();
     return (geckoVersion != -1) && (geckoVersion <= 1009001);
   }

   /**
    * Return true if using Gecko 1.9.2 (Firefox 3.6) or earlier.
    *
    * @return true if using Gecko 1.9.2 (Firefox 3.6) or earlier
    */
   private static boolean isGecko192OrBefore() {
     int geckoVersion = getGeckoVersion();
     return (geckoVersion != -1) && (geckoVersion <= 1009002);
   }

   /**
    * Return true if using Gecko 2.0.0 (Firefox 4.0) or earlier.
    *
    * @return true if using Gecko 2.0.0 (Firefox 4.0) or earlier
    */
   private static boolean isGecko2OrBefore() {
     int geckoVersion = getGeckoVersion();
     return (geckoVersion != -1) && (geckoVersion < 2000000);
   }

   @Override
   public native void buttonClick(ButtonElement button) /*-{
     var doc = button.ownerDocument;
     if (doc != null) {
       var evt = doc.createEvent('MouseEvents');
       evt.initMouseEvent('click', true, true, null, 0, 0,
         0, 0, 0, false, false, false, false, 0, null);
       button.dispatchEvent(evt);
     }
   }-*/;

   @Override
   public NativeEvent createKeyCodeEvent(Document doc, String type,
       boolean ctrlKey, boolean altKey, boolean shiftKey, boolean metaKey,
       int keyCode) {
     return createKeyEventImpl(doc, type, true, true, ctrlKey, altKey, shiftKey,
         metaKey, keyCode, 0);
   }

   @Override
   @Deprecated
   public NativeEvent createKeyEvent(Document doc, String type,
       boolean canBubble, boolean cancelable, boolean ctrlKey, boolean altKey,
       boolean shiftKey, boolean metaKey, int keyCode, int charCode) {
     return createKeyEventImpl(doc, type, canBubble, cancelable, ctrlKey,
         altKey, shiftKey, metaKey, keyCode, charCode);
   }

   @Override
   public NativeEvent createKeyPressEvent(Document doc, boolean ctrlKey,
       boolean altKey, boolean shiftKey, boolean metaKey, int charCode) {
     return createKeyEventImpl(doc, "keypress", true, true, ctrlKey, altKey,
         shiftKey, metaKey, 0, charCode);
   }

   @Override
   public native int eventGetMouseWheelVelocityY(NativeEvent evt) /*-{
     return evt.detail || 0;
   }-*/;

   @Override
   public native EventTarget eventGetRelatedTarget(NativeEvent evt) /*-{
     // Hack around Mozilla bug 497780 (relatedTarget sometimes returns XUL
     // elements). Trying to access relatedTarget.nodeName will throw an
     // exception if it's a XUL element.
     var relatedTarget = evt.relatedTarget;
     if (!relatedTarget) {
       return null;
     }
     try {
       var nodeName = relatedTarget.nodeName;
       return relatedTarget;
     } catch (e) {
       return null;
     }
   }-*/;

   @Override
   public int getAbsoluteLeft(Element elem) {
     return getAbsoluteLeftImpl(elem.getOwnerDocument().getViewportElement(),
         elem);
   }

   @Override
   public int getAbsoluteTop(Element elem) {
     return getAbsoluteTopImpl(elem.getOwnerDocument().getViewportElement(),
         elem);
   }

   @Override
   public native int getBodyOffsetLeft(Document doc) /*-{
     var style = $wnd.getComputedStyle(doc.documentElement, null);
     if (style == null) {
       // Works around https://bugzilla.mozilla.org/show_bug.cgi?id=548397
       return 0;
     }
     return parseInt(style.marginLeft, 10) + parseInt(style.borderLeftWidth, 10);
   }-*/;

   @Override
   public native int getBodyOffsetTop(Document doc) /*-{
     var style = $wnd.getComputedStyle(doc.documentElement, null);
     if (style == null) {
       // Works around https://bugzilla.mozilla.org/show_bug.cgi?id=548397
       return 0;
     }
     return parseInt(style.marginTop, 10) + parseInt(style.borderTopWidth, 10);
   }-*/;

   @Override
   public native int getNodeType(Node node) /*-{
     try {
       return node.nodeType;
     } catch (e) {
       // Give up on 'Permission denied to get property HTMLDivElement.nodeType'
       // '0' is not a valid node type, which is appropriate in this case, since
       // the node in question is completely inaccessible.
       //
       // See https://bugzilla.mozilla.org/show_bug.cgi?id=208427
       // and http://code.google.com/p/google-web-toolkit/issues/detail?id=1909
       return 0;
     }
   }-*/;

   @Override
   public int getScrollLeft(Element elem) {
     if (!isGecko19() && isRTL(elem)) {
       return super.getScrollLeft(elem)
           - (elem.getScrollWidth() - elem.getClientWidth());
     }
     return super.getScrollLeft(elem);
   }

   @Override
   public native boolean isOrHasChild(Node parent, Node child) /*-{
     // For more information about compareDocumentPosition, see:
     // http://www.quirksmode.org/blog/archives/2006/01/contains_for_mo.html
     return (parent === child) || !!(parent.compareDocumentPosition(child) & 16);
   }-*/;

   @Override
   public void setScrollLeft(Element elem, int left) {
     if (!isGecko19() && isRTL(elem)) {
       left += elem.getScrollWidth() - elem.getClientWidth();
     }
     super.setScrollLeft(elem, left);
   }

   @Override
   public native String toString(Element elem) /*-{
     // Basic idea is to use the innerHTML property by copying the node into a
     // div and getting the innerHTML
     var doc = elem.ownerDocument;
     var temp = elem.cloneNode(true);
     var tempDiv = doc.createElement("DIV");
     tempDiv.appendChild(temp);
     outer = tempDiv.innerHTML;
     temp.innerHTML = "";
     return outer;
   }-*/;

   private native NativeEvent createKeyEventImpl(Document doc, String type,
       boolean canBubble, boolean cancelable, boolean ctrlKey, boolean altKey,
       boolean shiftKey, boolean metaKey, int keyCode, int charCode) /*-{
     var evt = doc.createEvent('KeyboardEvent');
     if (evt.initKeyEvent) {
       // Gecko
       evt.initKeyEvent(type, canBubble, cancelable, null, ctrlKey, altKey,
         shiftKey, metaKey, keyCode, charCode);
     } else {
       // This happens to be IE11+ as of today
       if ($wnd.console) {
         $wnd.console.error("Synthetic keyboard events are not supported in this browser");
       }
     }
     return evt;
   }-*/;

   private native int getAbsoluteLeftImpl(Element viewport, Element elem) /*-{
     // Firefox 3 is actively throwing errors when getBoxObjectFor() is called,
     // so we use getBoundingClientRect() whenever possible (but it's not
     // supported on older versions). If changing this code, make sure to check
     // the museum entry for issue 1932.
     // (x) | 0 is used to coerce the value to an integer
     if (Element.prototype.getBoundingClientRect) {
       return (elem.getBoundingClientRect().left + viewport.scrollLeft) | 0;
     } else {
       // We cannot use DOMImpl here because offsetLeft/Top return erroneous
       // values when overflow is not visible.  We have to difference screenX
       // here due to a change in getBoxObjectFor which causes inconsistencies
       // on whether the calculations are inside or outside of the element's
       // border.
       // If the element is in a scrollable div, getBoxObjectFor(elem) can return
       // a value that varies by 1 pixel.
       var doc = elem.ownerDocument;
       return doc.getBoxObjectFor(elem).screenX -
         doc.getBoxObjectFor(doc.documentElement).screenX;
     }
   }-*/;

   private native int getAbsoluteTopImpl(Element viewport, Element elem) /*-{
     // Firefox 3 is actively throwing errors when getBoxObjectFor() is called,
     // so we use getBoundingClientRect() whenever possible (but it's not
     // supported on older versions). If changing this code, make sure to check
     // the museum entry for issue 1932.
     // (x) | 0 is used to coerce the value to an integer
     if (Element.prototype.getBoundingClientRect) {
       return (elem.getBoundingClientRect().top + viewport.scrollTop) | 0;
     } else {
       // We cannot use DOMImpl here because offsetLeft/Top return erroneous
       // values when overflow is not visible.  We have to difference screenX
       // here due to a change in getBoxObjectFor which causes inconsistencies
       // on whether the calculations are inside or outside of the element's
       // border.
       var doc = elem.ownerDocument;
       return doc.getBoxObjectFor(elem).screenY -
         doc.getBoxObjectFor(doc.documentElement).screenY;
     }
   }-*/;

   private native boolean isRTL(Element elem) /*-{
     var style = elem.ownerDocument.defaultView.getComputedStyle(elem, null);
     return style.direction == 'rtl';
   }-*/;
 }
	/*
	* 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.dom.client;

	/**
	* Mozilla implementation of StandardBrowser.
	*/
	class DOMImplMozilla extends DOMImplStandard {

	private static int cachedGeckoVersion = -2;

	private static int getGeckoVersion() {
	if (cachedGeckoVersion == -2) {
	cachedGeckoVersion = getNativeGeckoVersion();
	}
	return cachedGeckoVersion;
	}

	private static native int getNativeGeckoVersion() /*-{
	var result = /rv:([0-9]+)\.([0-9]+)(\.([0-9]+))?.*?/.exec(navigator.userAgent.toLowerCase());
	if (result && result.length >= 3) {
	var version = (parseInt(result[1]) * 1000000) + (parseInt(result[2]) * 1000) +
	parseInt(result.length >= 5 && !isNaN(result[4]) ? result[4] : 0);
	return version;
	}
	return -1; // not gecko
	}-*/;

	/**
	* Return true if using Gecko 1.9 (Firefox 3) or later.
	*
	* @return true if using Gecko 1.9 (Firefox 3) or later
	*/
	private static boolean isGecko19() {
	int geckoVersion = getGeckoVersion();
	return (geckoVersion != -1) && (geckoVersion >= 1009000);
	}

	/**
	* Return true if using Gecko 1.9.0 (Firefox 3) or earlier.
	*
	* @return true if using Gecko 1.9.0 (Firefox 3) or earlier
	*/
	private static boolean isGecko190OrBefore() {
	int geckoVersion = getGeckoVersion();
	return (geckoVersion != -1) && (geckoVersion <= 1009000);
	}

	/**
	* Return true if using Gecko 1.9.1 (Firefox 3.5) or earlier.
	*
	* @return true if using Gecko 1.9.1 (Firefox 3.5) or earlier
	*/
	private static boolean isGecko191OrBefore() {
	int geckoVersion = getGeckoVersion();
	return (geckoVersion != -1) && (geckoVersion <= 1009001);
	}

	/**
	* Return true if using Gecko 1.9.2 (Firefox 3.6) or earlier.
	*
	* @return true if using Gecko 1.9.2 (Firefox 3.6) or earlier
	*/
	private static boolean isGecko192OrBefore() {
	int geckoVersion = getGeckoVersion();
	return (geckoVersion != -1) && (geckoVersion <= 1009002);
	}

	/**
	* Return true if using Gecko 2.0.0 (Firefox 4.0) or earlier.
	*
	* @return true if using Gecko 2.0.0 (Firefox 4.0) or earlier
	*/
	private static boolean isGecko2OrBefore() {
	int geckoVersion = getGeckoVersion();
	return (geckoVersion != -1) && (geckoVersion < 2000000);
	}

	@Override
	public native void buttonClick(ButtonElement button) /*-{
	var doc = button.ownerDocument;
	if (doc != null) {
	var evt = doc.createEvent('MouseEvents');
	evt.initMouseEvent('click', true, true, null, 0, 0,
	0, 0, 0, false, false, false, false, 0, null);
	button.dispatchEvent(evt);
	}
	}-*/;

	@Override
	public NativeEvent createKeyCodeEvent(Document doc, String type,
	boolean ctrlKey, boolean altKey, boolean shiftKey, boolean metaKey,
	int keyCode) {
	return createKeyEventImpl(doc, type, true, true, ctrlKey, altKey, shiftKey,
	metaKey, keyCode, 0);
	}

	@Override
	@Deprecated
	public NativeEvent createKeyEvent(Document doc, String type,
	boolean canBubble, boolean cancelable, boolean ctrlKey, boolean altKey,
	boolean shiftKey, boolean metaKey, int keyCode, int charCode) {
	return createKeyEventImpl(doc, type, canBubble, cancelable, ctrlKey,
	altKey, shiftKey, metaKey, keyCode, charCode);
	}

	@Override
	public NativeEvent createKeyPressEvent(Document doc, boolean ctrlKey,
	boolean altKey, boolean shiftKey, boolean metaKey, int charCode) {
	return createKeyEventImpl(doc, "keypress", true, true, ctrlKey, altKey,
	shiftKey, metaKey, 0, charCode);
	}

	@Override
	public native int eventGetMouseWheelVelocityY(NativeEvent evt) /*-{
	return evt.detail \|\| 0;
	}-*/;

	@Override
	public native EventTarget eventGetRelatedTarget(NativeEvent evt) /*-{
	// Hack around Mozilla bug 497780 (relatedTarget sometimes returns XUL
	// elements). Trying to access relatedTarget.nodeName will throw an
	// exception if it's a XUL element.
	var relatedTarget = evt.relatedTarget;
	if (!relatedTarget) {
	return null;
	}
	try {
	var nodeName = relatedTarget.nodeName;
	return relatedTarget;
	} catch (e) {
	return null;
	}
	}-*/;

	@Override
	public int getAbsoluteLeft(Element elem) {
	return getAbsoluteLeftImpl(elem.getOwnerDocument().getViewportElement(),
	elem);
	}

	@Override
	public int getAbsoluteTop(Element elem) {
	return getAbsoluteTopImpl(elem.getOwnerDocument().getViewportElement(),
	elem);
	}

	@Override
	public native int getBodyOffsetLeft(Document doc) /*-{
	var style = $wnd.getComputedStyle(doc.documentElement, null);
	if (style == null) {
	// Works around https://bugzilla.mozilla.org/show_bug.cgi?id=548397
	return 0;
	}
	return parseInt(style.marginLeft, 10) + parseInt(style.borderLeftWidth, 10);
	}-*/;

	@Override
	public native int getBodyOffsetTop(Document doc) /*-{
	var style = $wnd.getComputedStyle(doc.documentElement, null);
	if (style == null) {
	// Works around https://bugzilla.mozilla.org/show_bug.cgi?id=548397
	return 0;
	}
	return parseInt(style.marginTop, 10) + parseInt(style.borderTopWidth, 10);
	}-*/;

	@Override
	public native int getNodeType(Node node) /*-{
	try {
	return node.nodeType;
	} catch (e) {
	// Give up on 'Permission denied to get property HTMLDivElement.nodeType'
	// '0' is not a valid node type, which is appropriate in this case, since
	// the node in question is completely inaccessible.
	//
	// See https://bugzilla.mozilla.org/show_bug.cgi?id=208427
	// and http://code.google.com/p/google-web-toolkit/issues/detail?id=1909
	return 0;
	}
	}-*/;

	@Override
	public int getScrollLeft(Element elem) {
	if (!isGecko19() && isRTL(elem)) {
	return super.getScrollLeft(elem)
	- (elem.getScrollWidth() - elem.getClientWidth());
	}
	return super.getScrollLeft(elem);
	}

	@Override
	public native boolean isOrHasChild(Node parent, Node child) /*-{
	// For more information about compareDocumentPosition, see:
	// http://www.quirksmode.org/blog/archives/2006/01/contains_for_mo.html
	return (parent === child) \|\| !!(parent.compareDocumentPosition(child) & 16);
	}-*/;

	@Override
	public void setScrollLeft(Element elem, int left) {
	if (!isGecko19() && isRTL(elem)) {
	left += elem.getScrollWidth() - elem.getClientWidth();
	}
	super.setScrollLeft(elem, left);
	}

	@Override
	public native String toString(Element elem) /*-{
	// Basic idea is to use the innerHTML property by copying the node into a
	// div and getting the innerHTML
	var doc = elem.ownerDocument;
	var temp = elem.cloneNode(true);
	var tempDiv = doc.createElement("DIV");
	tempDiv.appendChild(temp);
	outer = tempDiv.innerHTML;
	temp.innerHTML = "";
	return outer;
	}-*/;

	private native NativeEvent createKeyEventImpl(Document doc, String type,
	boolean canBubble, boolean cancelable, boolean ctrlKey, boolean altKey,
	boolean shiftKey, boolean metaKey, int keyCode, int charCode) /*-{
	var evt = doc.createEvent('KeyboardEvent');
	if (evt.initKeyEvent) {
	// Gecko
	evt.initKeyEvent(type, canBubble, cancelable, null, ctrlKey, altKey,
	shiftKey, metaKey, keyCode, charCode);
	} else {
	// This happens to be IE11+ as of today
	if ($wnd.console) {
	$wnd.console.error("Synthetic keyboard events are not supported in this browser");
	}
	}
	return evt;
	}-*/;

	private native int getAbsoluteLeftImpl(Element viewport, Element elem) /*-{
	// Firefox 3 is actively throwing errors when getBoxObjectFor() is called,
	// so we use getBoundingClientRect() whenever possible (but it's not
	// supported on older versions). If changing this code, make sure to check
	// the museum entry for issue 1932.
	// (x) \| 0 is used to coerce the value to an integer
	if (Element.prototype.getBoundingClientRect) {
	return (elem.getBoundingClientRect().left + viewport.scrollLeft) \| 0;
	} else {
	// We cannot use DOMImpl here because offsetLeft/Top return erroneous
	// values when overflow is not visible. We have to difference screenX
	// here due to a change in getBoxObjectFor which causes inconsistencies
	// on whether the calculations are inside or outside of the element's
	// border.
	// If the element is in a scrollable div, getBoxObjectFor(elem) can return
	// a value that varies by 1 pixel.
	var doc = elem.ownerDocument;
	return doc.getBoxObjectFor(elem).screenX -
	doc.getBoxObjectFor(doc.documentElement).screenX;
	}
	}-*/;

	private native int getAbsoluteTopImpl(Element viewport, Element elem) /*-{
	// Firefox 3 is actively throwing errors when getBoxObjectFor() is called,
	// so we use getBoundingClientRect() whenever possible (but it's not
	// supported on older versions). If changing this code, make sure to check
	// the museum entry for issue 1932.
	// (x) \| 0 is used to coerce the value to an integer
	if (Element.prototype.getBoundingClientRect) {
	return (elem.getBoundingClientRect().top + viewport.scrollTop) \| 0;
	} else {
	// We cannot use DOMImpl here because offsetLeft/Top return erroneous
	// values when overflow is not visible. We have to difference screenX
	// here due to a change in getBoxObjectFor which causes inconsistencies
	// on whether the calculations are inside or outside of the element's
	// border.
	var doc = elem.ownerDocument;
	return doc.getBoxObjectFor(elem).screenY -
	doc.getBoxObjectFor(doc.documentElement).screenY;
	}
	}-*/;

	private native boolean isRTL(Element elem) /*-{
	var style = elem.ownerDocument.defaultView.getComputedStyle(elem, null);
	return style.direction == 'rtl';
	}-*/;
	}