| 1 | define(["dojo/_base/lang","dojo/_base/declare","dojo/_base/array","dojo/_base/event","dojo/_base/connect", |
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| 2 | "dojo/dom-class","dojo/_base/window","./Mover"], |
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| 3 | function(lang,declare,arr,event,connect,domClass,win,Mover){ |
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| 4 | return declare("dojox.gfx.Moveable", null, { |
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| 5 | constructor: function(shape, params){ |
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| 6 | // summary: an object, which makes a shape moveable |
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| 7 | // shape: dojox.gfx.Shape: a shape object to be moved |
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| 8 | // params: Object: an optional object with additional parameters; |
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| 9 | // following parameters are recognized: |
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| 10 | // delay: Number: delay move by this number of pixels |
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| 11 | // mover: Object: a constructor of custom Mover |
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| 12 | this.shape = shape; |
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| 13 | this.delay = (params && params.delay > 0) ? params.delay : 0; |
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| 14 | this.mover = (params && params.mover) ? params.mover : Mover; |
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| 15 | this.events = [ |
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| 16 | this.shape.connect("onmousedown", this, "onMouseDown") |
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| 17 | // cancel text selection and text dragging |
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| 18 | //, dojo.connect(this.handle, "ondragstart", dojo, "stopEvent") |
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| 19 | //, dojo.connect(this.handle, "onselectstart", dojo, "stopEvent") |
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| 20 | ]; |
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| 21 | }, |
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| 22 | |
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| 23 | // methods |
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| 24 | destroy: function(){ |
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| 25 | // summary: stops watching for possible move, deletes all references, so the object can be garbage-collected |
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| 26 | arr.forEach(this.events, this.shape.disconnect, this.shape); |
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| 27 | this.events = this.shape = null; |
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| 28 | }, |
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| 29 | |
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| 30 | // mouse event processors |
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| 31 | onMouseDown: function(e){ |
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| 32 | // summary: event processor for onmousedown, creates a Mover for the shape |
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| 33 | // e: Event: mouse event |
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| 34 | if(this.delay){ |
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| 35 | this.events.push( |
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| 36 | this.shape.connect("onmousemove", this, "onMouseMove"), |
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| 37 | this.shape.connect("onmouseup", this, "onMouseUp")); |
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| 38 | this._lastX = e.clientX; |
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| 39 | this._lastY = e.clientY; |
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| 40 | }else{ |
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| 41 | new this.mover(this.shape, e, this); |
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| 42 | } |
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| 43 | event.stop(e); |
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| 44 | }, |
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| 45 | onMouseMove: function(e){ |
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| 46 | // summary: event processor for onmousemove, used only for delayed drags |
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| 47 | // e: Event: mouse event |
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| 48 | if(Math.abs(e.clientX - this._lastX) > this.delay || Math.abs(e.clientY - this._lastY) > this.delay){ |
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| 49 | this.onMouseUp(e); |
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| 50 | new this.mover(this.shape, e, this); |
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| 51 | } |
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| 52 | event.stop(e); |
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| 53 | }, |
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| 54 | onMouseUp: function(e){ |
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| 55 | // summary: event processor for onmouseup, used only for delayed delayed drags |
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| 56 | // e: Event: mouse event |
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| 57 | this.shape.disconnect(this.events.pop()); |
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| 58 | this.shape.disconnect(this.events.pop()); |
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| 59 | }, |
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| 60 | |
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| 61 | // local events |
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| 62 | onMoveStart: function(/* dojox.gfx.Mover */ mover){ |
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| 63 | // summary: called before every move operation |
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| 64 | connect.publish("/gfx/move/start", [mover]); |
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| 65 | domClass.add(win.body(), "dojoMove"); |
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| 66 | }, |
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| 67 | onMoveStop: function(/* dojox.gfx.Mover */ mover){ |
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| 68 | // summary: called after every move operation |
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| 69 | connect.publish("/gfx/move/stop", [mover]); |
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| 70 | domClass.remove(win.body(), "dojoMove"); |
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| 71 | }, |
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| 72 | onFirstMove: function(/* dojox.gfx.Mover */ mover){ |
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| 73 | // summary: called during the very first move notification, |
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| 74 | // can be used to initialize coordinates, can be overwritten. |
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| 75 | |
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| 76 | // default implementation does nothing |
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| 77 | }, |
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| 78 | onMove: function(/* dojox.gfx.Mover */ mover, /* Object */ shift){ |
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| 79 | // summary: called during every move notification, |
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| 80 | // should actually move the node, can be overwritten. |
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| 81 | this.onMoving(mover, shift); |
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| 82 | this.shape.applyLeftTransform(shift); |
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| 83 | this.onMoved(mover, shift); |
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| 84 | }, |
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| 85 | onMoving: function(/* dojox.gfx.Mover */ mover, /* Object */ shift){ |
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| 86 | // summary: called before every incremental move, |
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| 87 | // can be overwritten. |
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| 88 | |
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| 89 | // default implementation does nothing |
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| 90 | }, |
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| 91 | onMoved: function(/* dojox.gfx.Mover */ mover, /* Object */ shift){ |
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| 92 | // summary: called after every incremental move, |
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| 93 | // can be overwritten. |
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| 94 | |
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| 95 | // default implementation does nothing |
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| 96 | } |
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| 97 | }); |
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| 98 | }); |
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