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jrtechs-vis
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Graph uses util methods from vis.js now

css_transitions
josdejong 11 years ago
parent
0241a46f68
commit
ed401c31ff
3 changed files with 59 additions and 309 deletions
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  1. +28
    -153
      src/graph/graph.js
  2. +28
    -153
      vis.js
  3. +3
    -3
      vis.min.js

+ 28
- 153
src/graph/graph.js View File

@ -240,10 +240,10 @@ Graph.prototype._create = function () {
var onmousemove = function (event) {me._onMouseMoveTitle(event);}; var onmousemove = function (event) {me._onMouseMoveTitle(event);};
var onmousewheel = function (event) {me._onMouseWheel(event);}; var onmousewheel = function (event) {me._onMouseWheel(event);};
var ontouchstart = function (event) {me._onTouchStart(event);}; var ontouchstart = function (event) {me._onTouchStart(event);};
Graph.addEventListener(this.frame.canvas, "mousedown", onmousedown);
Graph.addEventListener(this.frame.canvas, "mousemove", onmousemove);
Graph.addEventListener(this.frame.canvas, "mousewheel", onmousewheel);
Graph.addEventListener(this.frame.canvas, "touchstart", ontouchstart);
vis.util.addEventListener(this.frame.canvas, "mousedown", onmousedown);
vis.util.addEventListener(this.frame.canvas, "mousemove", onmousemove);
vis.util.addEventListener(this.frame.canvas, "mousewheel", onmousewheel);
vis.util.addEventListener(this.frame.canvas, "touchstart", ontouchstart);
// add the frame to the container element // add the frame to the container element
this.containerElement.appendChild(this.frame); this.containerElement.appendChild(this.frame);
@ -311,19 +311,19 @@ Graph.prototype._onMouseDown = function (event) {
var me = this; var me = this;
if (!this.onmousemove) { if (!this.onmousemove) {
this.onmousemove = function (event) {me._onMouseMove(event);}; this.onmousemove = function (event) {me._onMouseMove(event);};
Graph.addEventListener(document, "mousemove", me.onmousemove);
vis.util.addEventListener(document, "mousemove", me.onmousemove);
} }
if (!this.onmouseup) { if (!this.onmouseup) {
this.onmouseup = function (event) {me._onMouseUp(event);}; this.onmouseup = function (event) {me._onMouseUp(event);};
Graph.addEventListener(document, "mouseup", me.onmouseup);
vis.util.addEventListener(document, "mouseup", me.onmouseup);
} }
Graph.preventDefault(event);
vis.util.preventDefault(event);
// store the start x and y position of the mouse // store the start x and y position of the mouse
this.startMouseX = event.clientX || event.targetTouches[0].clientX; this.startMouseX = event.clientX || event.targetTouches[0].clientX;
this.startMouseY = event.clientY || event.targetTouches[0].clientY; this.startMouseY = event.clientY || event.targetTouches[0].clientY;
this.startFrameLeft = Graph._getAbsoluteLeft(this.frame.canvas);
this.startFrameTop = Graph._getAbsoluteTop(this.frame.canvas);
this.startFrameLeft = vis.util.getAbsoluteLeft(this.frame.canvas);
this.startFrameTop = vis.util.getAbsoluteTop(this.frame.canvas);
this.startTranslation = this._getTranslation(); this.startTranslation = this._getTranslation();
this.ctrlKeyDown = event.ctrlKey; this.ctrlKeyDown = event.ctrlKey;
@ -436,7 +436,7 @@ Graph.prototype._onMouseMove = function (event) {
this.moved = true; this.moved = true;
} }
Graph.preventDefault(event);
vis.util.preventDefault(event);
}; };
/** /**
@ -451,14 +451,14 @@ Graph.prototype._onMouseUp = function (event) {
// remove event listeners here, important for Safari // remove event listeners here, important for Safari
if (this.onmousemove) { if (this.onmousemove) {
Graph.removeEventListener(document, "mousemove", this.onmousemove);
vis.util.removeEventListener(document, "mousemove", this.onmousemove);
this.onmousemove = undefined; this.onmousemove = undefined;
} }
if (this.onmouseup) { if (this.onmouseup) {
Graph.removeEventListener(document, "mouseup", this.onmouseup);
vis.util.removeEventListener(document, "mouseup", this.onmouseup);
this.onmouseup = undefined; this.onmouseup = undefined;
} }
Graph.preventDefault(event);
vis.util.preventDefault(event);
// check selected nodes // check selected nodes
var endMouseX = event.clientX || this.mouseX || 0; var endMouseX = event.clientX || this.mouseX || 0;
@ -543,8 +543,8 @@ Graph.prototype._onMouseWheel = function(event) {
scaleNew = 10; scaleNew = 10;
} }
var frameLeft = Graph._getAbsoluteLeft(this.frame.canvas);
var frameTop = Graph._getAbsoluteTop(this.frame.canvas);
var frameLeft = vis.util.getAbsoluteLeft(this.frame.canvas);
var frameTop = vis.util.getAbsoluteTop(this.frame.canvas);
var x = mouseX - frameLeft; var x = mouseX - frameLeft;
var y = mouseY - frameTop; var y = mouseY - frameTop;
@ -561,7 +561,7 @@ Graph.prototype._onMouseWheel = function(event) {
// Prevent default actions caused by mouse wheel. // Prevent default actions caused by mouse wheel.
// That might be ugly, but we handle scrolls somehow // That might be ugly, but we handle scrolls somehow
// anyway, so don't bother here... // anyway, so don't bother here...
Graph.preventDefault(event);
vis.util.preventDefault(event);
}; };
@ -573,8 +573,8 @@ Graph.prototype._onMouseMoveTitle = function (event) {
var startMouseX = event.clientX; var startMouseX = event.clientX;
var startMouseY = event.clientY; var startMouseY = event.clientY;
this.startFrameLeft = this.startFrameLeft || Graph._getAbsoluteLeft(this.frame.canvas);
this.startFrameTop = this.startFrameTop || Graph._getAbsoluteTop(this.frame.canvas);
this.startFrameLeft = this.startFrameLeft || vis.util.getAbsoluteLeft(this.frame.canvas);
this.startFrameTop = this.startFrameTop || vis.util.getAbsoluteTop(this.frame.canvas);
var x = startMouseX - this.startFrameLeft; var x = startMouseX - this.startFrameLeft;
var y = startMouseY - this.startFrameTop; var y = startMouseY - this.startFrameTop;
@ -690,7 +690,7 @@ Graph.prototype._checkHidePopup = function (x, y) {
* Event handler for touchstart event on mobile devices * Event handler for touchstart event on mobile devices
*/ */
Graph.prototype._onTouchStart = function(event) { Graph.prototype._onTouchStart = function(event) {
Graph.preventDefault(event);
vis.util.preventDefault(event);
if (this.touchDown) { if (this.touchDown) {
// if already moving, return // if already moving, return
@ -701,11 +701,11 @@ Graph.prototype._onTouchStart = function(event) {
var me = this; var me = this;
if (!this.ontouchmove) { if (!this.ontouchmove) {
this.ontouchmove = function (event) {me._onTouchMove(event);}; this.ontouchmove = function (event) {me._onTouchMove(event);};
Graph.addEventListener(document, "touchmove", this.ontouchmove);
vis.util.addEventListener(document, "touchmove", this.ontouchmove);
} }
if (!this.ontouchend) { if (!this.ontouchend) {
this.ontouchend = function (event) {me._onTouchEnd(event);}; this.ontouchend = function (event) {me._onTouchEnd(event);};
Graph.addEventListener(document, "touchend", this.ontouchend);
vis.util.addEventListener(document, "touchend", this.ontouchend);
} }
this._onMouseDown(event); this._onMouseDown(event);
@ -715,7 +715,7 @@ Graph.prototype._onTouchStart = function(event) {
* Event handler for touchmove event on mobile devices * Event handler for touchmove event on mobile devices
*/ */
Graph.prototype._onTouchMove = function(event) { Graph.prototype._onTouchMove = function(event) {
Graph.preventDefault(event);
vis.util.preventDefault(event);
this._onMouseMove(event); this._onMouseMove(event);
}; };
@ -723,16 +723,16 @@ Graph.prototype._onTouchMove = function(event) {
* Event handler for touchend event on mobile devices * Event handler for touchend event on mobile devices
*/ */
Graph.prototype._onTouchEnd = function(event) { Graph.prototype._onTouchEnd = function(event) {
Graph.preventDefault(event);
vis.util.preventDefault(event);
this.touchDown = false; this.touchDown = false;
if (this.ontouchmove) { if (this.ontouchmove) {
Graph.removeEventListener(document, "touchmove", this.ontouchmove);
vis.util.removeEventListener(document, "touchmove", this.ontouchmove);
this.ontouchmove = undefined; this.ontouchmove = undefined;
} }
if (this.ontouchend) { if (this.ontouchend) {
Graph.removeEventListener(document, "touchend", this.ontouchend);
vis.util.removeEventListener(document, "touchend", this.ontouchend);
this.ontouchend = undefined; this.ontouchend = undefined;
} }
@ -1593,7 +1593,7 @@ Graph.prototype._doStabilize = function() {
while (!stable && count < this.constants.maxIterations) { while (!stable && count < this.constants.maxIterations) {
this._calculateForces(); this._calculateForces();
this._discreteStepNodes(); this._discreteStepNodes();
stable = !this.isMoving(vmin);
stable = !this._isMoving(vmin);
count++; count++;
} }
@ -1744,7 +1744,7 @@ Graph.prototype._calculateForces = function(nodeId) {
* @param {number} vmin the minimum velocity considered as "moving" * @param {number} vmin the minimum velocity considered as "moving"
* @return {boolean} true if moving, false if non of the nodes is moving * @return {boolean} true if moving, false if non of the nodes is moving
*/ */
Graph.prototype.isMoving = function(vmin) {
Graph.prototype._isMoving = function(vmin) {
// TODO: ismoving does not work well: should check the kinetic energy, not its velocity // TODO: ismoving does not work well: should check the kinetic energy, not its velocity
var nodes = this.nodes; var nodes = this.nodes;
for (var n = 0, nMax = nodes.length; n < nMax; n++) { for (var n = 0, nMax = nodes.length; n < nMax; n++) {
@ -1776,7 +1776,7 @@ Graph.prototype.start = function() {
this._discreteStepNodes(); this._discreteStepNodes();
var vmin = this.constants.minVelocity; var vmin = this.constants.minVelocity;
this.moving = this.isMoving(vmin);
this.moving = this._isMoving(vmin);
} }
if (this.moving) { if (this.moving) {
@ -1806,131 +1806,6 @@ Graph.prototype.stop = function () {
}; };
/**--------------------------------------------------------------------------**/
/**
* Add and event listener. Works for all browsers
* @param {Element} element An html element
* @param {String} action The action, for example "click",
* without the prefix "on"
* @param {function} listener The callback function to be executed
* @param {boolean} useCapture
*/
Graph.addEventListener = function (element, action, listener, useCapture) {
if (element.addEventListener) {
if (useCapture === undefined)
useCapture = false;
if (action === "mousewheel" && navigator.userAgent.indexOf("Firefox") >= 0) {
action = "DOMMouseScroll"; // For Firefox
}
element.addEventListener(action, listener, useCapture);
} else {
element.attachEvent("on" + action, listener); // IE browsers
}
};
/**
* Remove an event listener from an element
* @param {Element} element An html dom element
* @param {string} action The name of the event, for example "mousedown"
* @param {function} listener The listener function
* @param {boolean} useCapture
*/
Graph.removeEventListener = function(element, action, listener, useCapture) {
if (element.removeEventListener) {
// non-IE browsers
if (useCapture === undefined)
useCapture = false;
if (action === "mousewheel" && navigator.userAgent.indexOf("Firefox") >= 0) {
action = "DOMMouseScroll"; // For Firefox
}
element.removeEventListener(action, listener, useCapture);
} else {
// IE browsers
element.detachEvent("on" + action, listener);
}
};
/**
* Stop event propagation
*/
Graph.stopPropagation = function (event) {
if (!event)
event = window.event;
if (event.stopPropagation) {
event.stopPropagation(); // non-IE browsers
}
else {
event.cancelBubble = true; // IE browsers
}
};
/**
* Cancels the event if it is cancelable, without stopping further propagation of the event.
*/
Graph.preventDefault = function (event) {
if (!event)
event = window.event;
if (event.preventDefault) {
event.preventDefault(); // non-IE browsers
}
else {
event.returnValue = false; // IE browsers
}
};
/**
* Retrieve the absolute left value of a DOM element
* @param {Element} elem A dom element, for example a div
* @return {number} left The absolute left position of this element
* in the browser page.
*/
Graph._getAbsoluteLeft = function(elem) {
var left = 0;
while( elem != null ) {
left += elem.offsetLeft;
left -= elem.scrollLeft;
elem = elem.offsetParent;
}
if (!document.body.scrollLeft && window.pageXOffset) {
// FF
left -= window.pageXOffset;
}
return left;
};
/**
* Retrieve the absolute top value of a DOM element
* @param {Element} elem A dom element, for example a div
* @return {number} top The absolute top position of this element
* in the browser page.
*/
Graph._getAbsoluteTop = function(elem) {
var top = 0;
while( elem != null ) {
top += elem.offsetTop;
top -= elem.scrollTop;
elem = elem.offsetParent;
}
if (!document.body.scrollTop && window.pageYOffset) {
// FF
top -= window.pageYOffset;
}
return top;
};
/**--------------------------------------------------------------------------**/ /**--------------------------------------------------------------------------**/

+ 28
- 153
vis.js View File

@ -7047,10 +7047,10 @@ Graph.prototype._create = function () {
var onmousemove = function (event) {me._onMouseMoveTitle(event);}; var onmousemove = function (event) {me._onMouseMoveTitle(event);};
var onmousewheel = function (event) {me._onMouseWheel(event);}; var onmousewheel = function (event) {me._onMouseWheel(event);};
var ontouchstart = function (event) {me._onTouchStart(event);}; var ontouchstart = function (event) {me._onTouchStart(event);};
Graph.addEventListener(this.frame.canvas, "mousedown", onmousedown);
Graph.addEventListener(this.frame.canvas, "mousemove", onmousemove);
Graph.addEventListener(this.frame.canvas, "mousewheel", onmousewheel);
Graph.addEventListener(this.frame.canvas, "touchstart", ontouchstart);
vis.util.addEventListener(this.frame.canvas, "mousedown", onmousedown);
vis.util.addEventListener(this.frame.canvas, "mousemove", onmousemove);
vis.util.addEventListener(this.frame.canvas, "mousewheel", onmousewheel);
vis.util.addEventListener(this.frame.canvas, "touchstart", ontouchstart);
// add the frame to the container element // add the frame to the container element
this.containerElement.appendChild(this.frame); this.containerElement.appendChild(this.frame);
@ -7118,19 +7118,19 @@ Graph.prototype._onMouseDown = function (event) {
var me = this; var me = this;
if (!this.onmousemove) { if (!this.onmousemove) {
this.onmousemove = function (event) {me._onMouseMove(event);}; this.onmousemove = function (event) {me._onMouseMove(event);};
Graph.addEventListener(document, "mousemove", me.onmousemove);
vis.util.addEventListener(document, "mousemove", me.onmousemove);
} }
if (!this.onmouseup) { if (!this.onmouseup) {
this.onmouseup = function (event) {me._onMouseUp(event);}; this.onmouseup = function (event) {me._onMouseUp(event);};
Graph.addEventListener(document, "mouseup", me.onmouseup);
vis.util.addEventListener(document, "mouseup", me.onmouseup);
} }
Graph.preventDefault(event);
vis.util.preventDefault(event);
// store the start x and y position of the mouse // store the start x and y position of the mouse
this.startMouseX = event.clientX || event.targetTouches[0].clientX; this.startMouseX = event.clientX || event.targetTouches[0].clientX;
this.startMouseY = event.clientY || event.targetTouches[0].clientY; this.startMouseY = event.clientY || event.targetTouches[0].clientY;
this.startFrameLeft = Graph._getAbsoluteLeft(this.frame.canvas);
this.startFrameTop = Graph._getAbsoluteTop(this.frame.canvas);
this.startFrameLeft = vis.util.getAbsoluteLeft(this.frame.canvas);
this.startFrameTop = vis.util.getAbsoluteTop(this.frame.canvas);
this.startTranslation = this._getTranslation(); this.startTranslation = this._getTranslation();
this.ctrlKeyDown = event.ctrlKey; this.ctrlKeyDown = event.ctrlKey;
@ -7243,7 +7243,7 @@ Graph.prototype._onMouseMove = function (event) {
this.moved = true; this.moved = true;
} }
Graph.preventDefault(event);
vis.util.preventDefault(event);
}; };
/** /**
@ -7258,14 +7258,14 @@ Graph.prototype._onMouseUp = function (event) {
// remove event listeners here, important for Safari // remove event listeners here, important for Safari
if (this.onmousemove) { if (this.onmousemove) {
Graph.removeEventListener(document, "mousemove", this.onmousemove);
vis.util.removeEventListener(document, "mousemove", this.onmousemove);
this.onmousemove = undefined; this.onmousemove = undefined;
} }
if (this.onmouseup) { if (this.onmouseup) {
Graph.removeEventListener(document, "mouseup", this.onmouseup);
vis.util.removeEventListener(document, "mouseup", this.onmouseup);
this.onmouseup = undefined; this.onmouseup = undefined;
} }
Graph.preventDefault(event);
vis.util.preventDefault(event);
// check selected nodes // check selected nodes
var endMouseX = event.clientX || this.mouseX || 0; var endMouseX = event.clientX || this.mouseX || 0;
@ -7350,8 +7350,8 @@ Graph.prototype._onMouseWheel = function(event) {
scaleNew = 10; scaleNew = 10;
} }
var frameLeft = Graph._getAbsoluteLeft(this.frame.canvas);
var frameTop = Graph._getAbsoluteTop(this.frame.canvas);
var frameLeft = vis.util.getAbsoluteLeft(this.frame.canvas);
var frameTop = vis.util.getAbsoluteTop(this.frame.canvas);
var x = mouseX - frameLeft; var x = mouseX - frameLeft;
var y = mouseY - frameTop; var y = mouseY - frameTop;
@ -7368,7 +7368,7 @@ Graph.prototype._onMouseWheel = function(event) {
// Prevent default actions caused by mouse wheel. // Prevent default actions caused by mouse wheel.
// That might be ugly, but we handle scrolls somehow // That might be ugly, but we handle scrolls somehow
// anyway, so don't bother here... // anyway, so don't bother here...
Graph.preventDefault(event);
vis.util.preventDefault(event);
}; };
@ -7380,8 +7380,8 @@ Graph.prototype._onMouseMoveTitle = function (event) {
var startMouseX = event.clientX; var startMouseX = event.clientX;
var startMouseY = event.clientY; var startMouseY = event.clientY;
this.startFrameLeft = this.startFrameLeft || Graph._getAbsoluteLeft(this.frame.canvas);
this.startFrameTop = this.startFrameTop || Graph._getAbsoluteTop(this.frame.canvas);
this.startFrameLeft = this.startFrameLeft || vis.util.getAbsoluteLeft(this.frame.canvas);
this.startFrameTop = this.startFrameTop || vis.util.getAbsoluteTop(this.frame.canvas);
var x = startMouseX - this.startFrameLeft; var x = startMouseX - this.startFrameLeft;
var y = startMouseY - this.startFrameTop; var y = startMouseY - this.startFrameTop;
@ -7497,7 +7497,7 @@ Graph.prototype._checkHidePopup = function (x, y) {
* Event handler for touchstart event on mobile devices * Event handler for touchstart event on mobile devices
*/ */
Graph.prototype._onTouchStart = function(event) { Graph.prototype._onTouchStart = function(event) {
Graph.preventDefault(event);
vis.util.preventDefault(event);
if (this.touchDown) { if (this.touchDown) {
// if already moving, return // if already moving, return
@ -7508,11 +7508,11 @@ Graph.prototype._onTouchStart = function(event) {
var me = this; var me = this;
if (!this.ontouchmove) { if (!this.ontouchmove) {
this.ontouchmove = function (event) {me._onTouchMove(event);}; this.ontouchmove = function (event) {me._onTouchMove(event);};
Graph.addEventListener(document, "touchmove", this.ontouchmove);
vis.util.addEventListener(document, "touchmove", this.ontouchmove);
} }
if (!this.ontouchend) { if (!this.ontouchend) {
this.ontouchend = function (event) {me._onTouchEnd(event);}; this.ontouchend = function (event) {me._onTouchEnd(event);};
Graph.addEventListener(document, "touchend", this.ontouchend);
vis.util.addEventListener(document, "touchend", this.ontouchend);
} }
this._onMouseDown(event); this._onMouseDown(event);
@ -7522,7 +7522,7 @@ Graph.prototype._onTouchStart = function(event) {
* Event handler for touchmove event on mobile devices * Event handler for touchmove event on mobile devices
*/ */
Graph.prototype._onTouchMove = function(event) { Graph.prototype._onTouchMove = function(event) {
Graph.preventDefault(event);
vis.util.preventDefault(event);
this._onMouseMove(event); this._onMouseMove(event);
}; };
@ -7530,16 +7530,16 @@ Graph.prototype._onTouchMove = function(event) {
* Event handler for touchend event on mobile devices * Event handler for touchend event on mobile devices
*/ */
Graph.prototype._onTouchEnd = function(event) { Graph.prototype._onTouchEnd = function(event) {
Graph.preventDefault(event);
vis.util.preventDefault(event);
this.touchDown = false; this.touchDown = false;
if (this.ontouchmove) { if (this.ontouchmove) {
Graph.removeEventListener(document, "touchmove", this.ontouchmove);
vis.util.removeEventListener(document, "touchmove", this.ontouchmove);
this.ontouchmove = undefined; this.ontouchmove = undefined;
} }
if (this.ontouchend) { if (this.ontouchend) {
Graph.removeEventListener(document, "touchend", this.ontouchend);
vis.util.removeEventListener(document, "touchend", this.ontouchend);
this.ontouchend = undefined; this.ontouchend = undefined;
} }
@ -8400,7 +8400,7 @@ Graph.prototype._doStabilize = function() {
while (!stable && count < this.constants.maxIterations) { while (!stable && count < this.constants.maxIterations) {
this._calculateForces(); this._calculateForces();
this._discreteStepNodes(); this._discreteStepNodes();
stable = !this.isMoving(vmin);
stable = !this._isMoving(vmin);
count++; count++;
} }
@ -8551,7 +8551,7 @@ Graph.prototype._calculateForces = function(nodeId) {
* @param {number} vmin the minimum velocity considered as "moving" * @param {number} vmin the minimum velocity considered as "moving"
* @return {boolean} true if moving, false if non of the nodes is moving * @return {boolean} true if moving, false if non of the nodes is moving
*/ */
Graph.prototype.isMoving = function(vmin) {
Graph.prototype._isMoving = function(vmin) {
// TODO: ismoving does not work well: should check the kinetic energy, not its velocity // TODO: ismoving does not work well: should check the kinetic energy, not its velocity
var nodes = this.nodes; var nodes = this.nodes;
for (var n = 0, nMax = nodes.length; n < nMax; n++) { for (var n = 0, nMax = nodes.length; n < nMax; n++) {
@ -8583,7 +8583,7 @@ Graph.prototype.start = function() {
this._discreteStepNodes(); this._discreteStepNodes();
var vmin = this.constants.minVelocity; var vmin = this.constants.minVelocity;
this.moving = this.isMoving(vmin);
this.moving = this._isMoving(vmin);
} }
if (this.moving) { if (this.moving) {
@ -8613,131 +8613,6 @@ Graph.prototype.stop = function () {
}; };
/**--------------------------------------------------------------------------**/
/**
* Add and event listener. Works for all browsers
* @param {Element} element An html element
* @param {String} action The action, for example "click",
* without the prefix "on"
* @param {function} listener The callback function to be executed
* @param {boolean} useCapture
*/
Graph.addEventListener = function (element, action, listener, useCapture) {
if (element.addEventListener) {
if (useCapture === undefined)
useCapture = false;
if (action === "mousewheel" && navigator.userAgent.indexOf("Firefox") >= 0) {
action = "DOMMouseScroll"; // For Firefox
}
element.addEventListener(action, listener, useCapture);
} else {
element.attachEvent("on" + action, listener); // IE browsers
}
};
/**
* Remove an event listener from an element
* @param {Element} element An html dom element
* @param {string} action The name of the event, for example "mousedown"
* @param {function} listener The listener function
* @param {boolean} useCapture
*/
Graph.removeEventListener = function(element, action, listener, useCapture) {
if (element.removeEventListener) {
// non-IE browsers
if (useCapture === undefined)
useCapture = false;
if (action === "mousewheel" && navigator.userAgent.indexOf("Firefox") >= 0) {
action = "DOMMouseScroll"; // For Firefox
}
element.removeEventListener(action, listener, useCapture);
} else {
// IE browsers
element.detachEvent("on" + action, listener);
}
};
/**
* Stop event propagation
*/
Graph.stopPropagation = function (event) {
if (!event)
event = window.event;
if (event.stopPropagation) {
event.stopPropagation(); // non-IE browsers
}
else {
event.cancelBubble = true; // IE browsers
}
};
/**
* Cancels the event if it is cancelable, without stopping further propagation of the event.
*/
Graph.preventDefault = function (event) {
if (!event)
event = window.event;
if (event.preventDefault) {
event.preventDefault(); // non-IE browsers
}
else {
event.returnValue = false; // IE browsers
}
};
/**
* Retrieve the absolute left value of a DOM element
* @param {Element} elem A dom element, for example a div
* @return {number} left The absolute left position of this element
* in the browser page.
*/
Graph._getAbsoluteLeft = function(elem) {
var left = 0;
while( elem != null ) {
left += elem.offsetLeft;
left -= elem.scrollLeft;
elem = elem.offsetParent;
}
if (!document.body.scrollLeft && window.pageXOffset) {
// FF
left -= window.pageXOffset;
}
return left;
};
/**
* Retrieve the absolute top value of a DOM element
* @param {Element} elem A dom element, for example a div
* @return {number} top The absolute top position of this element
* in the browser page.
*/
Graph._getAbsoluteTop = function(elem) {
var top = 0;
while( elem != null ) {
top += elem.offsetTop;
top -= elem.scrollTop;
elem = elem.offsetParent;
}
if (!document.body.scrollTop && window.pageYOffset) {
// FF
top -= window.pageYOffset;
}
return top;
};
/**--------------------------------------------------------------------------**/ /**--------------------------------------------------------------------------**/

+ 3
- 3
vis.min.js
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