1 | /* |
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2 | * Ext JS Library 2.2.1 |
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3 | * Copyright(c) 2006-2009, Ext JS, LLC. |
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4 | * licensing@extjs.com |
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5 | * |
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6 | * http://extjs.com/license |
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7 | */ |
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8 | |
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9 | Ext.ux.PanelResizer = Ext.extend(Ext.util.Observable, { |
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10 | minHeight: 0, |
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11 | maxHeight:10000000, |
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12 | |
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13 | constructor: function(config){ |
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14 | Ext.apply(this, config); |
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15 | this.events = {}; |
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16 | Ext.ux.PanelResizer.superclass.constructor.call(this, config); |
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17 | }, |
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18 | |
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19 | init : function(p){ |
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20 | this.panel = p; |
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21 | |
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22 | if(this.panel.elements.indexOf('footer')==-1){ |
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23 | p.elements += ',footer'; |
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24 | } |
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25 | p.on('render', this.onRender, this); |
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26 | }, |
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27 | |
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28 | onRender : function(p){ |
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29 | this.handle = p.footer.createChild({cls:'x-panel-resize'}); |
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30 | |
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31 | this.tracker = new Ext.dd.DragTracker({ |
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32 | onStart: this.onDragStart.createDelegate(this), |
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33 | onDrag: this.onDrag.createDelegate(this), |
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34 | onEnd: this.onDragEnd.createDelegate(this), |
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35 | tolerance: 3, |
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36 | autoStart: 300 |
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37 | }); |
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38 | this.tracker.initEl(this.handle); |
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39 | p.on('beforedestroy', this.tracker.destroy, this.tracker); |
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40 | }, |
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41 | |
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42 | // private |
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43 | onDragStart: function(e){ |
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44 | this.dragging = true; |
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45 | this.startHeight = this.panel.el.getHeight(); |
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46 | this.fireEvent('dragstart', this, e); |
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47 | }, |
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48 | |
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49 | // private |
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50 | onDrag: function(e){ |
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51 | this.panel.setHeight((this.startHeight-this.tracker.getOffset()[1]).constrain(this.minHeight, this.maxHeight)); |
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52 | this.fireEvent('drag', this, e); |
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53 | }, |
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54 | |
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55 | // private |
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56 | onDragEnd: function(e){ |
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57 | this.dragging = false; |
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58 | this.fireEvent('dragend', this, e); |
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59 | } |
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60 | }); |
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