META-INF.resources.frontend.org.ikasan.draw2d.RotateHandle.js Maven / Gradle / Ivy
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Integration of vis.js library for Ikasan platform
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RotateHandle = draw2d.shape.basic.Rectangle.extend(
/** @lends draw2d.ResizeHandle.prototype */
{
NAME: "draw2d.RotateHandle",
/**
* Creates a new figure element which are not assigned to any canvas.
*
* @param {draw2d.Figure} the owner if the resize handle
* @param {Number} type the type of the ResizeHandle.
*/
init: function (attr, setter, getter) {
this.zoomCallback = ()=> {
this.attr({
width: this.origWidth*this.getCanvas().getZoom(),
height: this.origHeight*this.getCanvas().getZoom(),
radius: this.origRadius*this.getCanvas().getZoom(),
stroke: this.origStroke*this.getCanvas().getZoom()
})
// size of the ResizeHandle has changed. Force a reposition of handle
//
if(!this.blockEvent)
this.owner.fireEvent("move",{})
}
this._super(
extend({
// set some good defaults
bgColor: "#FDFDFD",
stroke: 0.5,
width:10,
height:10,
minWidth:0.3,
minHeight:0.3,
color: "#a0a0a0",
radius: 1,
selectable:false
// and allow to override them
}, attr),
extend({
owner : this.setOwner,
type : this.setType
},setter),
extend({
owner : this.getOwner,
type : this.getType
},getter))
// required in the SelectionEditPolicy to indicate the type of figure
// which the user clicks
this.isResizeHandle = true
this.command = null
this.commandMove = null
this.commandResize = null
this.useGradient = true
this.origRadius = this.radius
this.origWidth = this.width
this.origHeight = this.height
this.origStroke = this.stroke
this.oldRotationAngle = 0
this.ax = null
this.ay = null
this.bx = null
this.by = null
this.cx = null
this.cy = null
this.mouseX = null
this.mouseY = null
let _self = this;
$(document).ready(function () {
$("#canvas-wrapper").mousemove(function (e) {
_self.setMouseX(e.offsetX);
_self.setMouseY(e.offsetY);
});
});
this.isRotation = false
},
isRotationAction: function () {
return this.isRotation;
},
setMouseX: function (x) {
this.mouseX = x;
},
setMouseY: function (y) {
this.mouseY = y;
},
/**
*
* The edge of the rectangle for the snapTo mechanism.
*
* @return {draw2d.SnapToHelper} enum of the direction (NORTH, NORTH_WEST, EAST,...)
*/
getSnapToDirection: function () {
switch (this.type) {
case 1:
return draw2d.SnapToHelper.NORTH_WEST
case 2:
return draw2d.SnapToHelper.NORTH
case 3:
return draw2d.SnapToHelper.NORTH_EAST
case 4:
return draw2d.SnapToHelper.EAST
case 5:
return draw2d.SnapToHelper.SOUTH_EAST
case 6:
return draw2d.SnapToHelper.SOUTH
case 7:
return draw2d.SnapToHelper.SOUTH_WEST
case 8:
return draw2d.SnapToHelper.WEST
case 9:
return draw2d.SnapToHelper.NSEW
default:
return draw2d.SnapToHelper.EAST
}
},
/**
* @inheritdoc
*/
createShapeElement: function () {
this.shape = this._super()
this.shape.node.setAttribute("type", this.type)
this.updateCursor(this.shape)
return this.shape
},
/**
*
* Returns the current used SVG as string
*
* @returns {String}
*/
getOwner: function()
{
return this.owner;
},
setOwner: function( owner){
this.owner = owner
return this
},
/**
*
* Returns the current used SVG as string
*
* @returns {String}
*/
getType: function()
{
return this.type;
},
setType: function( type){
this.type = type
return this
},
/**
*
* calculate and set the cursor of the reize handle
* @private
*/
updateCursor: function (shape) {
if (shape === null) {
return this
}
if (this.isDraggable() === false) {
shape.attr({"cursor": "default"})
return this
}
switch (this.type) {
case 1:
shape.attr({"cursor": "nw-resize"})
break
case 2:
shape.attr({"cursor": "n-resize"})
break
case 3:
shape.attr({"cursor": "ne-resize"})
break
case 4:
shape.attr({"cursor": "e-resize"})
break
case 5:
shape.attr({"cursor": "se-resize"})
break
case 6:
shape.attr({"cursor": "s-resize"})
break
case 7:
shape.attr({"cursor": "sw-resize"})
break
case 8:
shape.attr({"cursor": "w-resize"})
break
default:
shape.attr({"cursor": "move"})
break
}
return this
},
/**
*
* Adjust the draggable flag of the resize handle and update the cursor of the shape in relation
* to the type of resize handle. north, south,west,..
*
* @param flag
* @returns {this}
*/
setDraggable: function (flag) {
this._super(flag)
this.updateCursor(this.shape)
return this
},
/**
*
* Will be called if the drag and drop action beginns. You can return [false] if you
* want avoid that the figure can be move.
*
* @param {Number} x the x-coordinate of the mouse event
* @param {Number} y the y-coordinate of the mouse event
* @param {Boolean} shiftKey true if the shift key has been pressed during this event
* @param {Boolean} ctrlKey true if the ctrl key has been pressed during the event
*
* @returns {Boolean} true whenever the drag drop operation is allowed.
**/
onDragStart: function (x, y, shiftKey, ctrlKey) {
// This happens if the selected figure has set the "nonResizeable" flag
// In this case the ResizeHandle can't be dragged. => no resize
//
if (!this.isDraggable()) {
return false
}
this.ox = this.getAbsoluteX()
this.oy = this.getAbsoluteY()
this.commandMove = this.owner.createCommand(new draw2d.command.CommandType(draw2d.command.CommandType.MOVE))
this.commandResize = this.owner.createCommand(new draw2d.command.CommandType(draw2d.command.CommandType.RESIZE))
return true
},
/**
*
* Called by the framework if the figure is moved by user interaction.
*
* @param {Number} dx the move x offset
* @param {Number} dy the move y offset
* @param {Number} dx2 The x diff since the last call of this dragging operation
* @param {Number} dy2 The y diff since the last call of this dragging operation
*
*/
onDrag: function (dx, dy, dx2, dy2) {
if (this.isDraggable() === false) {
return
}
console.log("before this.x: " + this.x + " this.y: " + this.y)
this.setPosition(this.getAbsoluteX(), this.getAbsoluteY())
console.log("after this.x: " + this.x + " this.y: " + this.y)
let oldX = this.x
let oldY = this.y
// call the super.drag method with all snapTo### handler and adjustments
this._super(dx, dy, dx2, dy2)
// console.log("before this.x: " + this.x + " this.y: " + this.y)
// this.setPosition(this.getAbsoluteX(), this.getAbsoluteY())
// console.log("after this.x: " + this.x + " this.y: " + this.y)
console.log("this.x: " + this.x + " oldX: " + oldX + " this.y: " + this.y + " oldY: " + oldY)
let diffX = this.x - oldX
let diffY = this.y - oldY
let obj = this.owner
let objPosX = obj.getAbsoluteX()
let objPosY = obj.getAbsoluteY()
let objWidth = obj.getWidth()
let objHeight = obj.getHeight()
let newX = null
let newY = null
let corrPos = null
console.log("(obj.getRotationAngle(): " + obj.getRotationAngle())
if((obj.getRotationAngle() > 0 && obj.getRotationAngle() <= 90 ) || (obj.getRotationAngle() < 0 && obj.getRotationAngle() >= -90 )) {
diffX = diffX *-1
diffY = diffY *-1
}
console.log("diffX: " + diffX + " diffY: " + diffY)
switch (this.type) {
case 1:
console.log("case1 dx: " + dx + " dy: " + dy + " dx2: " + dx2 + " dy2 " + dy2)
obj.setDimension(objWidth - diffX, objHeight - diffY)
newX = objPosX + (objWidth - obj.getWidth())
newY = objPosY + (objHeight - obj.getHeight())
this.isRotation = false;
obj.setPosition(newX, newY)
break
case 2:
console.log("case2 dx: " + dx + " dy: " + dy + " dx2: " + dx2 + " dy2 " + dy2)
obj.setDimension(objWidth, objHeight - diffY)
newX = objPosX
newY = objPosY + (objHeight - obj.getHeight())
this.isRotation = false;
obj.setPosition(newX, newY)
break
case 3:
console.log("case3 dx: " + dx + " dy: " + dy + " dx2: " + dx2 + " dy2 " + dy2)
obj.setDimension(objWidth + diffX, objHeight - diffY)
newX = objPosX
newY = objPosY + (objHeight - obj.getHeight())
this.isRotation = false;
obj.setPosition(newX, newY)
break
case 4:
console.log("case4 dx: " + dx + " dy: " + dy + " dx2: " + dx2 + " dy2 " + dy2)
obj.setDimension(objWidth + diffX, objHeight)
this.isRotation = false;
break
case 5:
console.log("case5 dx: " + dx + " dy: " + dy + " dx2: " + dx2 + " dy2 " + dy2)
obj.setDimension(objWidth + diffX, objHeight + diffY)
this.isRotation = false;
break
case 6:
console.log("case6 dx: " + dx + " dy: " + dy + " dx2: " + dx2 + " dy2 " + dy2)
obj.setDimension(objWidth, objHeight + diffY)
this.isRotation = false;
break
case 7:
console.log("case7 dx: " + dx + " dy: " + dy + " dx2: " + dx2 + " dy2 " + dy2)
obj.setDimension(objWidth - diffX, objHeight + diffY)
newX = objPosX + (objWidth - obj.getWidth())
newY = objPosY
obj.setPosition(newX, newY)
this.isRotation = false;
break
case 8:
console.log("case8 dx: " + dx + " dy: " + dy + " dx2: " + dx2 + " dy2 " + dy2)
obj.setDimension(objWidth - diffX, objHeight)
newX = objPosX + (objWidth - obj.getWidth())
newY = objPosY
obj.setPosition(newX, newY)
this.isRotation = false;
break
case 69:
console.log("case69 dx: " + dx + " dy: " + dy + " dx2: " + dx2 + " dy2 " + dy2)
let clockwise = null
let centreX = objPosX + (objWidth / 2);
let centreY = objPosY + (objHeight / 2);
// let angle = Math.atan2(this.mouseY-centreY, this.mouseX-centreX);
// let radians = (angle * 180 / Math.PI);
let radians = Math.atan2(this.mouseX-centreX, this.mouseY-centreY);
// let degree = (radians * (180 / Math.PI) * -1) + 90;
let degree = (radians * (180 / Math.PI) * -1) ;
// let diffX = centreX - this.mouseX;
// let diffY = centreY - this.mouseY;
// let tan = diffY / diffX;
//
// let atan = Math.atan(tan)* 180 / Math.PI;;
// if(diffY > 0 && diffX > 0) {
// atan += 180;
// }
// else if(diffY < 0 && diffX > 0) {
// atan -= 180;
// }
console.log('degree:' + degree + ' mouseX: ' + this.mouseX + ' mouseY: '
+ this.mouseY + ' centreX: ' + centreX + ' centreY' + centreY);
obj.setRotationAngle(degree)
// if(this.ax == null && this.ay == null) {
// this.ax = this.mouseX;
// this.ay = this.mouseY;
//
// // console.log('ax:' + this.ax + ' ay:' + this.ay)
// }
// else if(this.bx == null && this.by == null && this.ax != this.mouseX && this.ay != this.mouseY) {
// this.bx = this.mouseX;
// this.by = this.mouseY;
// // console.log('bx:' + this.bx + ' by:' + this.by)
// }
// else if(this.cx == null && this.cy == null && this.bx != null && this.by != null && this.bx != this.mouseX && this.by != this.mouseY) {
// this.cx = this.mouseX;
// this.cy = this.mouseY;
// // console.log('cx:' + this.cx + ' cy:' + this.cy)
//
// clockwise = this.mouseDirection(centreX, centreY, this.bx, this.by, this.cx, this.cy)
//
// console.log('clockwise:' + clockwise)
//
// this.ax = null;
// this.ay = null;
// this.bx = null;
// this.by = null;
// this.cx = null;
// this.cy = null;
// }
//
//
// if(clockwise != null && clockwise > 0) {
// obj.setRotationAngle((obj.getRotationAngle() + -1) %360)
// clockwise = null
// }
// else if(clockwise != null && clockwise < 0) {
// obj.setRotationAngle((obj.getRotationAngle() + 1) %360)
// clockwise = null
// }
this.isRotation = true;
this.setPosition(this.x, this.y)
break
}
if (newX !== null) {
// may the setPosition has changed regarding any constraint or edit policies. In this case
// we must adjust the dimension with the related correction
//
corrPos = obj.getPosition()
if (corrPos.x !== newX || corrPos.y !== newY) {
obj.setDimension(obj.getWidth() - (corrPos.x - newX), obj.getHeight() - (corrPos.y - newY))
}
}
},
mouseDirection: function(ax, ay, bx, by, cx, cy) {
let area2 = (bx - ax)*(cy - ay) - (by - ay)*(cx - ax);
if (area2 < 0) return -1; // clockwise
if (area2 > 0) return +1; // counter-clockwise
return 0; // collinear
},
dTrig: function (trigFunc, angle) {
return trigFunc(angle * Math.PI / 180);
},
calculatePointsAfterRotation: function (relativeX, relativeY, centreX, centreY ) {
let rotationAngle = 0;
if(this.owner.getRotationAngle() > 0) {
rotationAngle = this.owner.getRotationAngle() - 180;
}
else if (this.owner.getRotationAngle() < 0) {
rotationAngle = 180 + this.owner.getRotationAngle();
}
let cosRotationAngle = this.dTrig(Math.cos, rotationAngle);
let sinRotationAngle = this.dTrig(Math.sin, rotationAngle);
// console.log('cosRotationAngle:' + cosRotationAngle + ' sinRotationAngle:' + sinRotationAngle)
let newXx = (relativeX * cosRotationAngle) - (relativeY * sinRotationAngle)
let newYy = (relativeX * sinRotationAngle) + (relativeY * cosRotationAngle)
// console.log('newXx:' + newXx + ' newYy:' + newYy)
let newPositionX = centreX + newXx;
let newPositionY = centreY + newYy;
// console.log('newPositionX:' + newPositionX + ' newPositionY:' + newPositionY)
this.x = newPositionX;
this.y = newPositionY;
},
/**
*
* Will be called after a drag and drop action.
*
* @param {Number} x the x-coordinate of the mouse event
* @param {Number} y the y-coordinate of the mouse event
* @param {Boolean} shiftKey true if the shift key has been pressed during this event
* @param {Boolean} ctrlKey true if the ctrl key has been pressed during the event
* @private
**/
onDragEnd: function (x, y, shiftKey, ctrlKey) {
if (!this.isDraggable()) {
return
}
// An non draggable resizeHandle doesn't create a move/resize command.
// This happens if the selected figure has set the "nonResizeable" flag.
//
if (this.commandMove !== null) {
this.commandMove.setPosition(this.owner.getX(), this.owner.getY())
this.canvas.getCommandStack().execute(this.commandMove)
this.commandMove = null
}
if (this.commandResize !== null) {
this.commandResize.setDimension(this.owner.getWidth(), this.owner.getHeight())
this.canvas.getCommandStack().execute(this.commandResize)
this.commandResize = null
}
},
/**
* Set the position of the object.
* The ResizeHandle overrides the Figure.setPosition method. The base
* class updates the resize handles during the update of the Dimension/Position. This
* is not neccessary for the ResizeHandles. Performance issue.
*
* @param {Number|draw2d.geo.Point} x The new x coordinate of the figure
* @param {Number} y The new y coordinate of the figure
**/
setPosition: function (x, y) {
let obj = this.owner
let objPosX = obj.getAbsoluteX()
let objPosY = obj.getAbsoluteY()
let objWidth = obj.getWidth()
let objHeight = obj.getHeight()
let centreX = objPosX + (objWidth / 2) - (this.getWidth() / 2);
let centreY = objPosY + (objHeight / 2) - (this.getHeight() / 2);
if (x instanceof draw2d.geo.Point) {
this.x = x.x
this.y = x.y
}
else {
this.x = x
this.y = y
}
// if(this.isRotationAction()) {
if (this.type === 1) {
// console.log('this.x:' + this.getAbsoluteX() + ' this.y:' + this.getAbsoluteY() + ' obj.getRotationAngle(): ' + obj.getRotationAngle())
// console.log('objPosX:' + objPosX + ' objPosY:' + objPosY)
//
// console.log('centreX:' + centreX + ' centreY:' + centreY)
// let relativeX = objPosX - this.getWidth() - centreX;
// let relativeY = objPosY - this.getHeight() - centreY;
let relativeX = this.x - centreX;
let relativeY = this.y - centreY;
this.calculatePointsAfterRotation(relativeX, relativeY, centreX, centreY);
} else if (this.type === 2) {
// let relativeX = objPosX + (objWidth / 2) - (this.getWidth() / 2) - centreX;
// let relativeY = objPosY - this.getHeight() - centreY;
let relativeX = this.x - centreX;
let relativeY = this.y - centreY;
this.calculatePointsAfterRotation(relativeX, relativeY, centreX, centreY);
} else if (this.type === 3) {
// let relativeX = objPosX + objWidth - centreX;
// let relativeY = objPosY - this.getHeight() - centreY;
let relativeX = this.x - centreX;
let relativeY = this.y - centreY;
this.calculatePointsAfterRotation(relativeX, relativeY, centreX, centreY);
} else if (this.type === 4) {
// let relativeX = objPosX + objWidth - centreX;
// let relativeY = objPosY + (objHeight / 2) - (this.getHeight() / 2) - centreY;
let relativeX = this.x - centreX;
let relativeY = this.y - (this.getHeight() / 2) - centreY;
this.calculatePointsAfterRotation(relativeX, relativeY, centreX, centreY);
} else if (this.type === 5) {
// let relativeX = objPosX + objWidth - centreX;
// let relativeY = objPosY + objHeight - centreY;
let relativeX = this.x - centreX;
let relativeY = this.y - centreY;
this.calculatePointsAfterRotation(relativeX, relativeY, centreX, centreY);
} else if (this.type === 6) {
// let relativeX = objPosX + (objWidth / 2) - (this.getWidth() / 2) - centreX;
// let relativeY = objPosY + objHeight - centreY;
let relativeX = this.x - (this.getWidth() / 2) - centreX;
let relativeY = this.y - centreY;
this.calculatePointsAfterRotation(relativeX, relativeY, centreX, centreY);
} else if (this.type === 7) {
// let relativeX = objPosX - this.getWidth() - centreX;
// let relativeY = objPosY + objHeight - centreY;
let relativeX = this.x - centreX;
let relativeY = this.y - centreY;
this.calculatePointsAfterRotation(relativeX, relativeY, centreX, centreY);
} else if (this.type === 8) {
// let relativeX = objPosX - this.getWidth() - centreX;
// let relativeY = objPosY + (objHeight / 2) - (this.getHeight() / 2) - centreY;
let relativeX = this.x - centreX;
let relativeY = this.y - (this.getHeight() / 2) - centreY;
this.calculatePointsAfterRotation(relativeX, relativeY, centreX, centreY);
} else if (this.type === 69) {
// console.log('this.x:' + this.getAbsoluteX() + ' this.y:' + this.getAbsoluteY() + ' obj.getRotationAngle(): ' + obj.getRotationAngle())
// console.log('objPosX:' + objPosX + ' objPosY:' + objPosY)
//
// console.log('centreX:' + centreX + ' centreY:' + centreY)
let relativeX = objPosX + (objWidth / 2) - (this.getWidth() / 2) - centreX;
let relativeY = objPosY - 50 - centreY - (this.getHeight() / 2);
this.calculatePointsAfterRotation(relativeX, relativeY, centreX, centreY);
}
// }
/*else {
if (x instanceof draw2d.geo.Point) {
this.x = x.x
this.y = x.y
}
else {
this.x = x
this.y = y
}
// if (this.type === 1) {
//
// console.log('this.x:' + this.getAbsoluteX() + ' this.y:' + this.getAbsoluteY() + ' obj.getRotationAngle(): ' + obj.getRotationAngle())
// console.log('objPosX:' + objPosX + ' objPosY:' + objPosY)
//
// console.log('centreX:' + centreX + ' centreY:' + centreY)
//
// let relativeX = this.x - centreX;
// let relativeY = this.y - this.getHeight() - centreY;
//
// this.calculatePointsAfterRotation(relativeX, relativeY, centreX, centreY);
// }
// else {
// this.x = x
// this.y = y
// }
}*/
if (this.repaintBlocked === true || this.shape === null) {
return this
}
// performance improvement by setting the coordinates direct.
this.shape.attr({x: this.x, y: this.y})
this.applyTransformation()
},
/**
*
* Set the new dimension of the the ResizeHandle. If you didn't pass any width/height the best default for the
* platform will be used.
*
* Additional the "snapTo" anchor is re-calculated in relation to the type of ResizeHandle
*
* @param {Number} [width] new width of the resize handle
* @param {Number} [height] new width of the resize handle
*/
setDimension: function (width, height) {
if (typeof height !== "undefined") {
this._super(width, height)
}
else {
if (draw2d.isTouchDevice) {
this._super(15, 15)
}
else {
this._super(8, 8)
}
}
let offset = this.getWidth()
let offset2 = offset / 2
switch (this.type) {
case 1:
this.setSnapToGridAnchor(new draw2d.geo.Point(offset, offset))
break
case 2:
this.setSnapToGridAnchor(new draw2d.geo.Point(offset2, offset))
break
case 3:
this.setSnapToGridAnchor(new draw2d.geo.Point(0, offset))
break
case 4:
this.setSnapToGridAnchor(new draw2d.geo.Point(0, offset2))
break
case 5:
this.setSnapToGridAnchor(new draw2d.geo.Point(0, 0))
break
case 6:
this.setSnapToGridAnchor(new draw2d.geo.Point(offset2, 0))
break
case 7:
this.setSnapToGridAnchor(new draw2d.geo.Point(offset, 0))
break
case 8:
this.setSnapToGridAnchor(new draw2d.geo.Point(offset, offset2))
break
case 9:
this.setSnapToGridAnchor(new draw2d.geo.Point(offset2, offset2))
break
}
return this
},
/**
*
* Show the ResizeHandle and add it to the canvas.
* Additional bring it in to the front of other figures if we didn't use
* an overlayCanvas.
*
* If the ResizeHandle is place inside an overlayCanvas it is automatically on top.
*
* @param {draw2d.Canvas} canvas the canvas to use
**/
show: function (canvas) {
// don't call the parent function. The parent functions delete this object
// and a resize handle can't be deleted.
this.setCanvas(canvas)
this.canvas.resizeHandles.add(this)
this.shape.insertAfter(this.owner.getShapeElement())
try{
this.blockEvent=true
this.zoomCallback()
}
finally{
this.blockEvent=false
}
this.repaint()
return this
},
/**
*
* Hide the resize handle and remove it from the canvas.
*
**/
hide: function () {
// don't call the parent function. The parent functions delete this object
// and a resize handle shouldn't be deleted.
if (this.shape === null) {
return
}
this.canvas.resizeHandles.remove(this)
this.setCanvas(null)
return this
},
setCanvas: function (canvas) {
if(this.canvas!==null){
this.canvas.off(this.zoomCallback);
}
this._super(canvas)
if(this.canvas!==null){
this.canvas.on("zoom", this.zoomCallback);
}
},
/**
*
* Set the new background color of the figure. It is possible to hands over
* null to set the background transparent.
*
* @param {draw2d.util.Color} color The new background color of the figure
**/
setBackgroundColor: function (color) {
color = new draw2d.util.Color(color)
this.bgGradient = "90-" + color.darker(0.2).hash() + "-" + color.hash()
this._super(color)
return this
},
/**
* @inheritdoc
*/
repaint: function (attributes) {
if (this.repaintBlocked === true || this.shape === null) {
return
}
attributes = attributes || {}
if (this.bgColor.hash() === "none") {
attributes.fill = "none"
}
else if (this.getAlpha() < 0.9 || this.useGradient === false) {
attributes.fill = this.bgColor.rgba()
}
else {
attributes.fill = this.bgGradient
}
this._super(attributes)
},
/**
*
* return true if the element can be used in combination with the
* SnapToHelper feature.
*
* @returns {Boolean}
**/
supportsSnapToHelper: function () {
return true
},
/**
*
* Override this method and redirect them to the cavas. A ResizeHandle didn't support
* Keyboard interaction at the moment.
*
* @param {Number} keyCode the id of the pressed key
* @param {Boolean} ctrl true if the user has pressed the CTRL/STRG key as well.
**/
onKeyDown: function (keyCode, ctrl) {
// don't call the parent function. The parent functions delete this object
// and a resize handle can't be deleted.
this.canvas.onKeyDown(keyCode, ctrl)
},
/**
* @inheritdoc
*/
fireEvent: function (event, args) {
// A resizeHandle doesn't fire this event.
// Normally this set the document dirty. This is not necessary for a ResizeHandle.
}
})