147 lines
4 KiB
JavaScript
147 lines
4 KiB
JavaScript
define("dojo/dnd/move", [
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"../_base/declare",
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"../dom-geometry", "../dom-style",
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"./common", "./Mover", "./Moveable"
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], function(declare, domGeom, domStyle, dnd, Mover, Moveable){
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// module:
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// dojo/dnd/move
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/*=====
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var __constrainedMoveableArgs = declare([Moveable.__MoveableArgs], {
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// constraints: Function
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// Calculates a constraint box.
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// It is called in a context of the moveable object.
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constraints: function(){},
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// within: Boolean
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// restrict move within boundaries.
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within: false
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});
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=====*/
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var constrainedMoveable = declare("dojo.dnd.move.constrainedMoveable", Moveable, {
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// object attributes (for markup)
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constraints: function(){},
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within: false,
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constructor: function(node, params){
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// summary:
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// an object that makes a node moveable
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// node: Node
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// a node (or node's id) to be moved
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// params: __constrainedMoveableArgs?
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// an optional object with additional parameters;
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// the rest is passed to the base class
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if(!params){ params = {}; }
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this.constraints = params.constraints;
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this.within = params.within;
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},
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onFirstMove: function(/*Mover*/ mover){
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// summary:
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// called during the very first move notification;
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// can be used to initialize coordinates, can be overwritten.
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var c = this.constraintBox = this.constraints.call(this, mover);
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c.r = c.l + c.w;
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c.b = c.t + c.h;
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if(this.within){
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var mb = domGeom.getMarginSize(mover.node);
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c.r -= mb.w;
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c.b -= mb.h;
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}
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},
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onMove: function(/*Mover*/ mover, /*Object*/ leftTop){
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// summary:
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// called during every move notification;
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// should actually move the node; can be overwritten.
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var c = this.constraintBox, s = mover.node.style;
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this.onMoving(mover, leftTop);
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leftTop.l = leftTop.l < c.l ? c.l : c.r < leftTop.l ? c.r : leftTop.l;
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leftTop.t = leftTop.t < c.t ? c.t : c.b < leftTop.t ? c.b : leftTop.t;
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s.left = leftTop.l + "px";
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s.top = leftTop.t + "px";
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this.onMoved(mover, leftTop);
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}
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});
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/*=====
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var __boxConstrainedMoveableArgs = declare([__constrainedMoveableArgs], {
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// box: Object
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// a constraint box
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box: {}
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});
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=====*/
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var boxConstrainedMoveable = declare("dojo.dnd.move.boxConstrainedMoveable", constrainedMoveable, {
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// box:
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// object attributes (for markup)
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box: {},
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constructor: function(node, params){
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// summary:
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// an object, which makes a node moveable
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// node: Node
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// a node (or node's id) to be moved
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// params: __boxConstrainedMoveableArgs?
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// an optional object with parameters
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var box = params && params.box;
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this.constraints = function(){ return box; };
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}
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});
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/*=====
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var __parentConstrainedMoveableArgs = declare( [__constrainedMoveableArgs], {
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// area: String
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// A parent's area to restrict the move.
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// Can be "margin", "border", "padding", or "content".
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area: ""
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});
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=====*/
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var parentConstrainedMoveable = declare("dojo.dnd.move.parentConstrainedMoveable", constrainedMoveable, {
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// area:
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// object attributes (for markup)
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area: "content",
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constructor: function(node, params){
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// summary:
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// an object, which makes a node moveable
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// node: Node
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// a node (or node's id) to be moved
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// params: __parentConstrainedMoveableArgs?
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// an optional object with parameters
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var area = params && params.area;
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this.constraints = function(){
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var n = this.node.parentNode,
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s = domStyle.getComputedStyle(n),
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mb = domGeom.getMarginBox(n, s);
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if(area == "margin"){
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return mb; // Object
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}
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var t = domGeom.getMarginExtents(n, s);
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mb.l += t.l, mb.t += t.t, mb.w -= t.w, mb.h -= t.h;
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if(area == "border"){
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return mb; // Object
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}
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t = domGeom.getBorderExtents(n, s);
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mb.l += t.l, mb.t += t.t, mb.w -= t.w, mb.h -= t.h;
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if(area == "padding"){
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return mb; // Object
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}
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t = domGeom.getPadExtents(n, s);
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mb.l += t.l, mb.t += t.t, mb.w -= t.w, mb.h -= t.h;
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return mb; // Object
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};
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}
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});
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return {
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// summary:
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// TODOC
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constrainedMoveable: constrainedMoveable,
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boxConstrainedMoveable: boxConstrainedMoveable,
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parentConstrainedMoveable: parentConstrainedMoveable
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};
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});
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