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lib/CatalystX/CRUD/YUI/TT/static/js/livegrid/src/RowSelectionModel.js  view on Meta::CPAN

     * @param {Array} records The records that have been loaded
     * @param {Array} ranges  An array representing the model index ranges the
     *                        reords have been loaded for.
     */
    onSelectionsLoad : function(store, records, ranges)
    {
        this.replaceSelections(records);
    },

    /**
     * Returns true if there is a next record to select
     * @return {Boolean}
     */
    hasNext : function()
    {
        return this.last !== false && (this.last+1) < this.grid.store.getTotalCount();
    },

    /**
     * Gets the number of selected rows.
     * @return {Number}
     */
    getCount : function()
    {
        return this.selections.length + this.getPendingSelections().length;
    },

    /**
     * Returns True if the specified row is selected.
     *
     * @param {Number/Record} record The record or index of the record to check
     * @return {Boolean}
     */
    isSelected : function(index)
    {
        if (typeof index == "number") {
            var orgInd = index;
            index = this.grid.store.getAt(orgInd);
            if (!index) {
                var ind = this.getPendingSelections().indexOf(orgInd);
                if (ind != -1) {
                    return true;
                }

                return false;
            }
        }

        var r = index;
        return (r && this.selections.key(r.id) ? true : false);
    },


    /**
     * Deselects a record.
     * The emthod assumes that the record is physically available, i.e.
     * pendingSelections will not be taken into account
     */
    deselectRecord : function(record, preventViewNotify)
    {
        if(this.locked) {
            return;
        }

        var isSelected = this.selections.key(record.id);

        if (!isSelected) {
            return;
        }

        var store = this.grid.store;
        var index = store.indexOfId(record.id);

        if (index == -1) {
            index = store.findInsertIndex(record);
            if (index != Number.MIN_VALUE && index != Number.MAX_VALUE) {
                index += store.bufferRange[0];
            }
        } else {
            // just to make sure, though this should not be
            // set if the record was availablein the selections
            delete this.pendingSelections[index];
        }

        if (this.last == index) {
            this.last = false;
        }

        if (this.lastActive == index) {
            this.lastActive = false;
        }

        this.selections.remove(record);

        if(!preventViewNotify){
            this.grid.getView().onRowDeselect(index);
        }

        this.fireEvent("rowdeselect", this, index, record);
        this.fireEvent("selectionchange", this);
    },

    /**
     * Deselects a row.
     * @param {Number} row The index of the row to deselect
     */
    deselectRow : function(index, preventViewNotify)
    {
        if(this.locked) return;
        if(this.last == index){
            this.last = false;
        }

        if(this.lastActive == index){
            this.lastActive = false;
        }
        var r = this.grid.store.getAt(index);

        delete this.pendingSelections[index];

        if (r) {
            this.selections.remove(r);
        }
        if(!preventViewNotify){
            this.grid.getView().onRowDeselect(index);
        }
        this.fireEvent("rowdeselect", this, index, r);
        this.fireEvent("selectionchange", this);
    },


    /**
     * Selects a row.
     * @param {Number} row The index of the row to select
     * @param {Boolean} keepExisting (optional) True to keep existing selections
     */
    selectRow : function(index, keepExisting, preventViewNotify)
    {
        if(//this.last === index
           //||
           this.locked
           || index < 0
           || index >= this.grid.store.getTotalCount()) {
            return;
        }

        var r = this.grid.store.getAt(index);

        if(this.fireEvent("beforerowselect", this, index, keepExisting, r) !== false){
            if(!keepExisting || this.singleSelect){
                this.clearSelections();
            }

            if (r) {
                this.selections.add(r);
                delete this.pendingSelections[index];
            } else {
                this.pendingSelections[index] = true;
            }

            this.last = this.lastActive = index;

            if(!preventViewNotify){
                this.grid.getView().onRowSelect(index);
            }

            this.fireEvent("rowselect", this, index, r);
            this.fireEvent("selectionchange", this);
        }
    },

    clearPendingSelections : function(startIndex, endIndex)
    {
        if (endIndex == undefined) {
            endIndex = Number.MAX_VALUE;
        }

        var newSelections = {};

        var ranges       = this.getPendingSelections();
        var rangesLength = ranges.length;

        var index = 0;

        for (var i = 0; i < rangesLength; i++) {
            index = ranges[i];
            if (index <= endIndex && index >= startIndex) {
                continue;
            }

            newSelections[index] = true;
        }

        this.pendingSelections = newSelections;
    },

    /**
     * Replaces already set data with new data from the store if those
     * records can be found within this.selections or this.pendingSelections
     *
     * @param {Array} An array with records buffered by the store

lib/CatalystX/CRUD/YUI/TT/static/js/livegrid/src/RowSelectionModel.js  view on Meta::CPAN

        var id  = null;
        for (i = 0, len = records.length; i < len; i++) {
            rec = records[i];
            id  = rec.id;
            if (assigned.indexOf(id) == -1 && selections.containsKey(id)) {
                selections.add(rec);
            }
        }

    },

    getPendingSelections : function(asRange)
    {
        var index         = 1;
        var ranges        = [];
        var currentRange  = 0;
        var tmpArray      = [];

        for (var i in this.pendingSelections) {
            tmpArray.push(parseInt(i));
        }

        tmpArray.sort(function(o1,o2){
            if (o1 > o2) {
                return 1;
            } else if (o1 < o2) {
                return -1;
            } else {
                return 0;
            }
        });

        if (!asRange) {
            return tmpArray;
        }

        var max_i = tmpArray.length;

        if (max_i == 0) {
            return [];
        }

        ranges[currentRange] = [tmpArray[0], tmpArray[0]];
        for (var i = 0, max_i = max_i-1; i < max_i; i++) {
            if (tmpArray[i+1] - tmpArray[i] == 1) {
                ranges[currentRange][1] = tmpArray[i+1];
            } else {
                currentRange++;
                ranges[currentRange] = [tmpArray[i+1], tmpArray[i+1]];
            }
        }

        return ranges;
    },

    /**
     * Clears all selections.
     */
    clearSelections : function(fast)
    {
        if(this.locked) return;
        if(fast !== true){
            var ds  = this.grid.store;
            var s   = this.selections;
            var ind = -1;
            s.each(function(r){
                ind = ds.indexOfId(r.id);
                if (ind != -1) {
                    this.deselectRow(ind+ds.bufferRange[0]);
                }
            }, this);
            s.clear();

            this.pendingSelections = {};

        }else{
            this.selections.clear();
            this.pendingSelections    = {};
        }
        this.last = false;
    },


    /**
     * Selects a range of rows. All rows in between startRow and endRow are also
     * selected.
     *
     * @param {Number} startRow The index of the first row in the range
     * @param {Number} endRow The index of the last row in the range
     * @param {Boolean} keepExisting (optional) True to retain existing selections
     */
    selectRange : function(startRow, endRow, keepExisting)
    {
        if(this.locked) {
            return;
        }

        if(!keepExisting) {
            this.clearSelections();
        }

        if (startRow <= endRow) {
            for(var i = startRow; i <= endRow; i++) {
                this.selectRow(i, true);
            }
        } else {
            for(var i = startRow; i >= endRow; i--) {
                this.selectRow(i, true);
            }
        }

    }

});