// SpryDataExtensions.js - version 0.3 - Spry Pre-Release 1.6
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//
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// Copyright (c) 2007. Adobe Systems Incorporated.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of Adobe Systems Incorporated nor the names of its
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// contributors may be used to endorse or promote products derived from this
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// software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//////////////////////////////////////////////////////////////////////
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//
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// Support for multiple non-destructive filters on a Data Set.
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//
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//////////////////////////////////////////////////////////////////////
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Spry.Data.DataSet.multiFilterFuncs = {};
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Spry.Data.DataSet.multiFilterFuncs.and = function(ds, row, rowNumber)
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{
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var filters = ds.activeFilters;
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if (filters)
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{
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var numFilters = filters.length;
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for (var i = 0; i < numFilters; i++)
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{
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row = filters[i](ds, row, rowNumber);
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if (!row)
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break;
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}
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}
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return row;
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};
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Spry.Data.DataSet.multiFilterFuncs.or = function(ds, row, rowNumber)
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{
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var filters = ds.activeFilters;
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if (filters && filters.length > 0)
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{
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var numFilters = filters.length;
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for (var i = 0; i < numFilters; i++)
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{
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var savedRow = row;
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row = filters[i](ds, row, rowNumber);
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if (row)
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return row;
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row = savedRow;
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}
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return null;
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}
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return row;
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};
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Spry.Data.DataSet.prototype.getMultiFilterFunc = function()
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{
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var func = Spry.Data.DataSet.multiFilterFuncs[this.getFilterMode()];
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return func ? func : Spry.Data.DataSet.multiFilterFuncs["and"];
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};
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Spry.Data.DataSet.prototype.addFilter = function(filterFunc, doApplyFilters)
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{
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if (!this.hasFilter(filterFunc))
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{
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if (!this.activeFilters)
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this.activeFilters = [];
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this.activeFilters.push(filterFunc);
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}
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if (doApplyFilters)
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this.applyFilters();
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};
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Spry.Data.DataSet.prototype.removeFilter = function(filterFunc, doApplyFilters)
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{
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var filters = this.activeFilters;
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if (filters)
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{
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var numFilters = filters.length;
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for (var i = 0; i < numFilters; i++)
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{
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if (filters[i] == filterFunc)
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{
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this.activeFilters.splice(i, 1);
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if (doApplyFilters)
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this.applyFilters();
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return;
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}
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}
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}
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};
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Spry.Data.DataSet.prototype.removeAllFilters = function(doApplyFilters)
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{
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var filters = this.activeFilters;
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if (filters && filters.length > 0)
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{
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this.activeFilters = [];
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if (doApplyFilters)
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this.applyFilters();
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}
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};
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Spry.Data.DataSet.prototype.getFilters = function(filterFunc)
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{
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if (!this.activeFilters)
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this.activeFilters = [];
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return this.activeFilters;
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};
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Spry.Data.DataSet.prototype.applyFilters = function()
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{
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if (this.activeFilters && this.activeFilters.length > 0)
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this.filter(this.getMultiFilterFunc());
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else
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this.filter(null);
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};
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Spry.Data.DataSet.prototype.hasFilter = function(filterFunc)
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{
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if (!this.activeFilters && this.activeFilters > 0)
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{
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var filters = this.activeFilters;
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var numFilters = filters.length;
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for (var i = 0; i < numFilters; i++)
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{
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if (filters[i] == filterFunc)
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return true;
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}
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}
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return false;
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};
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Spry.Data.DataSet.prototype.getFilterMode = function()
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{
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return this.filterMode ? this.filterMode : "and";
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};
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Spry.Data.DataSet.prototype.setFilterMode = function(mode, doApplyFilters)
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{
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var oldMode = this.getFilterMode();
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this.filterMode = mode;
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if (doApplyFilters)
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this.applyFilters();
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return oldMode;
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};
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