1 | /*! |
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2 | * Ext JS Library 3.0.0 |
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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 | * http://www.extjs.com/license |
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6 | */ |
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7 | Ext.ux.Portal = Ext.extend(Ext.Panel, { |
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8 | layout : 'column', |
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9 | autoScroll : true, |
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10 | cls : 'x-portal', |
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11 | defaultType : 'portalcolumn', |
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12 | |
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13 | initComponent : function(){ |
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14 | Ext.ux.Portal.superclass.initComponent.call(this); |
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15 | this.addEvents({ |
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16 | validatedrop:true, |
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17 | beforedragover:true, |
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18 | dragover:true, |
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19 | beforedrop:true, |
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20 | drop:true |
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21 | }); |
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22 | }, |
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23 | |
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24 | initEvents : function(){ |
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25 | Ext.ux.Portal.superclass.initEvents.call(this); |
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26 | this.dd = new Ext.ux.Portal.DropZone(this, this.dropConfig); |
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27 | }, |
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28 | |
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29 | beforeDestroy : function() { |
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30 | if(this.dd){ |
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31 | this.dd.unreg(); |
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32 | } |
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33 | Ext.ux.Portal.superclass.beforeDestroy.call(this); |
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34 | } |
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35 | }); |
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36 | |
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37 | Ext.reg('portal', Ext.ux.Portal); |
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38 | |
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39 | |
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40 | Ext.ux.Portal.DropZone = function(portal, cfg){ |
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41 | this.portal = portal; |
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42 | Ext.dd.ScrollManager.register(portal.body); |
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43 | Ext.ux.Portal.DropZone.superclass.constructor.call(this, portal.bwrap.dom, cfg); |
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44 | portal.body.ddScrollConfig = this.ddScrollConfig; |
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45 | }; |
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46 | |
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47 | Ext.extend(Ext.ux.Portal.DropZone, Ext.dd.DropTarget, { |
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48 | ddScrollConfig : { |
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49 | vthresh: 50, |
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50 | hthresh: -1, |
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51 | animate: true, |
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52 | increment: 200 |
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53 | }, |
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54 | |
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55 | createEvent : function(dd, e, data, col, c, pos){ |
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56 | return { |
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57 | portal: this.portal, |
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58 | panel: data.panel, |
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59 | columnIndex: col, |
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60 | column: c, |
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61 | position: pos, |
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62 | data: data, |
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63 | source: dd, |
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64 | rawEvent: e, |
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65 | status: this.dropAllowed |
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66 | }; |
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67 | }, |
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68 | |
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69 | notifyOver : function(dd, e, data){ |
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70 | var xy = e.getXY(), portal = this.portal, px = dd.proxy; |
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71 | |
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72 | // case column widths |
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73 | if(!this.grid){ |
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74 | this.grid = this.getGrid(); |
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75 | } |
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76 | |
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77 | // handle case scroll where scrollbars appear during drag |
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78 | var cw = portal.body.dom.clientWidth; |
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79 | if(!this.lastCW){ |
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80 | this.lastCW = cw; |
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81 | }else if(this.lastCW != cw){ |
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82 | this.lastCW = cw; |
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83 | portal.doLayout(); |
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84 | this.grid = this.getGrid(); |
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85 | } |
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86 | |
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87 | // determine column |
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88 | var col = 0, xs = this.grid.columnX, cmatch = false; |
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89 | for(var len = xs.length; col < len; col++){ |
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90 | if(xy[0] < (xs[col].x + xs[col].w)){ |
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91 | cmatch = true; |
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92 | break; |
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93 | } |
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94 | } |
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95 | // no match, fix last index |
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96 | if(!cmatch){ |
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97 | col--; |
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98 | } |
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99 | |
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100 | // find insert position |
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101 | var p, match = false, pos = 0, |
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102 | c = portal.items.itemAt(col), |
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103 | items = c.items.items, overSelf = false; |
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104 | |
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105 | for(var len = items.length; pos < len; pos++){ |
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106 | p = items[pos]; |
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107 | var h = p.el.getHeight(); |
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108 | if(h === 0){ |
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109 | overSelf = true; |
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110 | } |
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111 | else if((p.el.getY()+(h/2)) > xy[1]){ |
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112 | match = true; |
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113 | break; |
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114 | } |
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115 | } |
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116 | |
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117 | pos = (match && p ? pos : c.items.getCount()) + (overSelf ? -1 : 0); |
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118 | var overEvent = this.createEvent(dd, e, data, col, c, pos); |
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119 | |
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120 | if(portal.fireEvent('validatedrop', overEvent) !== false && |
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121 | portal.fireEvent('beforedragover', overEvent) !== false){ |
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122 | |
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123 | // make sure proxy width is fluid |
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124 | px.getProxy().setWidth('auto'); |
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125 | |
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126 | if(p){ |
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127 | px.moveProxy(p.el.dom.parentNode, match ? p.el.dom : null); |
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128 | }else{ |
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129 | px.moveProxy(c.el.dom, null); |
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130 | } |
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131 | |
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132 | this.lastPos = {c: c, col: col, p: overSelf || (match && p) ? pos : false}; |
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133 | this.scrollPos = portal.body.getScroll(); |
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134 | |
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135 | portal.fireEvent('dragover', overEvent); |
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136 | |
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137 | return overEvent.status; |
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138 | }else{ |
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139 | return overEvent.status; |
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140 | } |
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141 | |
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142 | }, |
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143 | |
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144 | notifyOut : function(){ |
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145 | delete this.grid; |
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146 | }, |
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147 | |
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148 | notifyDrop : function(dd, e, data){ |
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149 | delete this.grid; |
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150 | if(!this.lastPos){ |
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151 | return; |
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152 | } |
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153 | var c = this.lastPos.c, col = this.lastPos.col, pos = this.lastPos.p; |
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154 | |
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155 | var dropEvent = this.createEvent(dd, e, data, col, c, |
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156 | pos !== false ? pos : c.items.getCount()); |
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157 | |
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158 | if(this.portal.fireEvent('validatedrop', dropEvent) !== false && |
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159 | this.portal.fireEvent('beforedrop', dropEvent) !== false){ |
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160 | |
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161 | dd.proxy.getProxy().remove(); |
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162 | dd.panel.el.dom.parentNode.removeChild(dd.panel.el.dom); |
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163 | |
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164 | if(pos !== false){ |
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165 | if(c == dd.panel.ownerCt && (c.items.items.indexOf(dd.panel) <= pos)){ |
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166 | pos++; |
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167 | } |
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168 | c.insert(pos, dd.panel); |
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169 | }else{ |
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170 | c.add(dd.panel); |
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171 | } |
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172 | |
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173 | c.doLayout(); |
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174 | |
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175 | this.portal.fireEvent('drop', dropEvent); |
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176 | |
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177 | // scroll position is lost on drop, fix it |
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178 | var st = this.scrollPos.top; |
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179 | if(st){ |
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180 | var d = this.portal.body.dom; |
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181 | setTimeout(function(){ |
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182 | d.scrollTop = st; |
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183 | }, 10); |
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184 | } |
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185 | |
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186 | } |
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187 | delete this.lastPos; |
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188 | }, |
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189 | |
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190 | // internal cache of body and column coords |
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191 | getGrid : function(){ |
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192 | var box = this.portal.bwrap.getBox(); |
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193 | box.columnX = []; |
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194 | this.portal.items.each(function(c){ |
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195 | box.columnX.push({x: c.el.getX(), w: c.el.getWidth()}); |
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196 | }); |
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197 | return box; |
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198 | }, |
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199 | |
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200 | // unregister the dropzone from ScrollManager |
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201 | unreg: function() { |
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202 | //Ext.dd.ScrollManager.unregister(this.portal.body); |
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203 | Ext.ux.Portal.DropZone.superclass.unreg.call(this); |
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204 | } |
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205 | }); |
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