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 | /* Fix for Opera, which does not seem to include the map function on Array's */ |
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10 | if(!Array.prototype.map){ |
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11 | Array.prototype.map = function(fun){ |
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12 | var len = this.length; |
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13 | if(typeof fun != "function"){ |
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14 | throw new TypeError(); |
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15 | } |
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16 | var res = new Array(len); |
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17 | var thisp = arguments[1]; |
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18 | for(var i = 0; i < len; i++){ |
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19 | if(i in this){ |
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20 | res[i] = fun.call(thisp, this[i], i, this); |
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21 | } |
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22 | } |
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23 | return res; |
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24 | }; |
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25 | } |
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26 | |
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27 | /* Paging Memory Proxy, allows to use paging grid with in memory dataset */ |
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28 | Ext.data.PagingMemoryProxy = function(data) { |
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29 | Ext.data.PagingMemoryProxy.superclass.constructor.call(this); |
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30 | this.data = data; |
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31 | }; |
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32 | |
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33 | Ext.extend(Ext.data.PagingMemoryProxy, Ext.data.MemoryProxy, { |
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34 | load : function(params, reader, callback, scope, arg) { |
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35 | params = params || {}; |
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36 | var result; |
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37 | try { |
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38 | result = reader.readRecords(this.data); |
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39 | }catch(e){ |
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40 | this.fireEvent("loadexception", this, arg, null, e); |
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41 | callback.call(scope, null, arg, false); |
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42 | return; |
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43 | } |
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44 | |
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45 | // filtering |
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46 | if (params.filter!==undefined) { |
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47 | result.records = result.records.filter(function(el){ |
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48 | if (typeof(el)=="object"){ |
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49 | var att = params.filterCol || 0; |
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50 | return String(el.data[att]).match(params.filter)?true:false; |
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51 | } else { |
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52 | return String(el).match(params.filter)?true:false; |
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53 | } |
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54 | }); |
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55 | result.totalRecords = result.records.length; |
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56 | } |
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57 | |
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58 | // sorting |
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59 | if (params.sort!==undefined) { |
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60 | // use integer as params.sort to specify column, since arrays are not named |
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61 | // params.sort=0; would also match a array without columns |
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62 | var dir = String(params.dir).toUpperCase() == "DESC" ? -1 : 1; |
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63 | var fn = function(v1, v2){ |
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64 | return v1 > v2 ? 1 : (v1 < v2 ? -1 : 0); |
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65 | }; |
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66 | result.records.sort(function(a, b) { |
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67 | var v = 0; |
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68 | if (typeof(a)=="object"){ |
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69 | v = fn(a.data[params.sort], b.data[params.sort]) * dir; |
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70 | } else { |
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71 | v = fn(a, b) * dir; |
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72 | } |
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73 | if (v==0) { |
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74 | v = (a.index < b.index ? -1 : 1); |
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75 | } |
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76 | return v; |
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77 | }); |
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78 | } |
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79 | |
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80 | // paging (use undefined cause start can also be 0 (thus false)) |
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81 | if (params.start!==undefined && params.limit!==undefined) { |
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82 | result.records = result.records.slice(params.start, params.start+params.limit); |
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83 | } |
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84 | |
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85 | callback.call(scope, result, arg, true); |
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86 | } |
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87 | }); |
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