source: Dev/trunk/src/client/dojox/grid/_Events.js

define([
        "dojo/keys",
        "dojo/dom-class",
        "dojo/_base/declare",
        "dojo/_base/event",
        "dojo/_base/sniff"
], function(keys, domClass, declare, event, has){

return declare("dojox.grid._Events", null, {
        // summary:
        //              _Grid mixin that provides default implementations for grid events.
        // description:
        //              Default synthetic events dispatched for _Grid. dojo.connect to events to
        //              retain default implementation or override them for custom handling.
        
        // cellOverClass: String
        //              css class to apply to grid cells over which the cursor is placed.
        cellOverClass: "dojoxGridCellOver",
        
        onKeyEvent: function(e){
                // summary:
                //              top level handler for Key Events
                this.dispatchKeyEvent(e);
        },

        onContentEvent: function(e){
                // summary:
                //              Top level handler for Content events
                this.dispatchContentEvent(e);
        },

        onHeaderEvent: function(e){
                // summary:
                //              Top level handler for header events
                this.dispatchHeaderEvent(e);
        },

        onStyleRow: function(inRow){
                // summary:
                //              Perform row styling on a given row. Called whenever row styling is updated.
                // inRow: Object
                //              Object containing row state information: selected, true if the row is selcted; over:
                //              true of the mouse is over the row; odd: true if the row is odd. Use customClasses and
                //              customStyles to control row css classes and styles; both properties are strings.
                // example:
                // |    onStyleRow({ selected: true, over:true, odd:false })
                var i = inRow;
                i.customClasses += (i.odd?" dojoxGridRowOdd":"") + (i.selected?" dojoxGridRowSelected":"") + (i.over?" dojoxGridRowOver":"");
                this.focus.styleRow(inRow);
                this.edit.styleRow(inRow);
        },
        
        onKeyDown: function(e){
                // summary:
                //              Grid key event handler. By default enter begins editing and applies edits, escape cancels an edit,
                //              tab, shift-tab, and arrow keys move grid cell focus.
                if(e.altKey || e.metaKey){
                        return;
                }
                var colIdx;
                switch(e.keyCode){
                        case keys.ESCAPE:
                                this.edit.cancel();
                                break;
                        case keys.ENTER:
                                if(!this.edit.isEditing()){
                                        colIdx = this.focus.getHeaderIndex();
                                        if(colIdx >= 0) {
                                                this.setSortIndex(colIdx);
                                                break;
                                        }else {
                                                this.selection.clickSelect(this.focus.rowIndex, dojo.isCopyKey(e), e.shiftKey);
                                        }
                                        event.stop(e);
                                }
                                if(!e.shiftKey){
                                        var isEditing = this.edit.isEditing();
                                        this.edit.apply();
                                        if(!isEditing){
                                                this.edit.setEditCell(this.focus.cell, this.focus.rowIndex);
                                        }
                                }
                                if (!this.edit.isEditing()){
                                        var curView = this.focus.focusView || this.views.views[0];  //if no focusView than only one view
                                        curView.content.decorateEvent(e);
                                        this.onRowClick(e);
                                        event.stop(e);
                                }
                                break;
                        case keys.SPACE:
                                if(!this.edit.isEditing()){
                                        colIdx = this.focus.getHeaderIndex();
                                        if(colIdx >= 0) {
                                                this.setSortIndex(colIdx);
                                                break;
                                        }else {
                                                this.selection.clickSelect(this.focus.rowIndex, dojo.isCopyKey(e), e.shiftKey);
                                        }
                                        event.stop(e);
                                }
                                break;
                        case keys.TAB:
                                this.focus[e.shiftKey ? 'previousKey' : 'nextKey'](e);
                                break;
                        case keys.LEFT_ARROW:
                        case keys.RIGHT_ARROW:
                                if(!this.edit.isEditing()){
                                        var keyCode = e.keyCode;  // IE seems to lose after stopEvent when modifier keys
                                        event.stop(e);
                                        colIdx = this.focus.getHeaderIndex();
                                        if (colIdx >= 0 && (e.shiftKey && e.ctrlKey)){
                                                this.focus.colSizeAdjust(e, colIdx, (keyCode == keys.LEFT_ARROW ? -1 : 1)*5);
                                        }
                                        else{
                                                var offset = (keyCode == keys.LEFT_ARROW) ? 1 : -1;
                                                if(this.isLeftToRight()){ offset *= -1; }
                                                this.focus.move(0, offset);
                                        }
                                }
                                break;
                        case keys.UP_ARROW:
                                if(!this.edit.isEditing() && this.focus.rowIndex !== 0){
                                        event.stop(e);
                                        this.focus.move(-1, 0);
                                }
                                break;
                        case keys.DOWN_ARROW:
                                if(!this.edit.isEditing() && this.focus.rowIndex+1 != this.rowCount){
                                        event.stop(e);
                                        this.focus.move(1, 0);
                                }
                                break;
                        case keys.PAGE_UP:
                                if(!this.edit.isEditing() && this.focus.rowIndex !== 0){
                                        event.stop(e);
                                        if(this.focus.rowIndex != this.scroller.firstVisibleRow+1){
                                                this.focus.move(this.scroller.firstVisibleRow-this.focus.rowIndex, 0);
                                        }else{
                                                this.setScrollTop(this.scroller.findScrollTop(this.focus.rowIndex-1));
                                                this.focus.move(this.scroller.firstVisibleRow-this.scroller.lastVisibleRow+1, 0);
                                        }
                                }
                                break;
                        case keys.PAGE_DOWN:
                                if(!this.edit.isEditing() && this.focus.rowIndex+1 != this.rowCount){
                                        event.stop(e);
                                        if(this.focus.rowIndex != this.scroller.lastVisibleRow-1){
                                                this.focus.move(this.scroller.lastVisibleRow-this.focus.rowIndex-1, 0);
                                        }else{
                                                this.setScrollTop(this.scroller.findScrollTop(this.focus.rowIndex+1));
                                                this.focus.move(this.scroller.lastVisibleRow-this.scroller.firstVisibleRow-1, 0);
                                        }
                                }
                                break;
                        default:
                                break;
                }
        },
        
        onMouseOver: function(e){
                // summary:
                //              Event fired when mouse is over the grid.
                // e: Event
                //              Decorated event object contains reference to grid, cell, and rowIndex
                e.rowIndex == -1 ? this.onHeaderCellMouseOver(e) : this.onCellMouseOver(e);
        },
        
        onMouseOut: function(e){
                // summary:
                //              Event fired when mouse moves out of the grid.
                // e: Event
                //              Decorated event object that contains reference to grid, cell, and rowIndex
                e.rowIndex == -1 ? this.onHeaderCellMouseOut(e) : this.onCellMouseOut(e);
        },
        
        onMouseDown: function(e){
                // summary:
                //              Event fired when mouse is down inside grid.
                // e: Event
                //              Decorated event object that contains reference to grid, cell, and rowIndex
                e.rowIndex == -1 ? this.onHeaderCellMouseDown(e) : this.onCellMouseDown(e);
        },
        
        onMouseOverRow: function(e){
                // summary:
                //              Event fired when mouse is over any row (data or header).
                // e: Event
                //              Decorated event object contains reference to grid, cell, and rowIndex
                if(!this.rows.isOver(e.rowIndex)){
                        this.rows.setOverRow(e.rowIndex);
                        e.rowIndex == -1 ? this.onHeaderMouseOver(e) : this.onRowMouseOver(e);
                }
        },
        onMouseOutRow: function(e){
                // summary:
                //              Event fired when mouse moves out of any row (data or header).
                // e: Event
                //              Decorated event object contains reference to grid, cell, and rowIndex
                if(this.rows.isOver(-1)){
                        this.onHeaderMouseOut(e);
                }else if(!this.rows.isOver(-2)){
                        this.rows.setOverRow(-2);
                        this.onRowMouseOut(e);
                }
        },
        
        onMouseDownRow: function(e){
                // summary:
                //              Event fired when mouse is down inside grid row
                // e: Event
                //              Decorated event object that contains reference to grid, cell, and rowIndex
                if(e.rowIndex != -1)
                        this.onRowMouseDown(e);
        },

        // cell events
        onCellMouseOver: function(e){
                // summary:
                //              Event fired when mouse is over a cell.
                // e: Event
                //              Decorated event object contains reference to grid, cell, and rowIndex
                if(e.cellNode){
                        domClass.add(e.cellNode, this.cellOverClass);
                }
        },
        
        onCellMouseOut: function(e){
                // summary:
                //              Event fired when mouse moves out of a cell.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
                if(e.cellNode){
                        domClass.remove(e.cellNode, this.cellOverClass);
                }
        },
        
        onCellMouseDown: function(e){
                // summary:
                //              Event fired when mouse is down in a header cell.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
        },

        onCellClick: function(e){
                // summary:
                //              Event fired when a cell is clicked.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
                this._click[0] = this._click[1];
                this._click[1] = e;
                if(!this.edit.isEditCell(e.rowIndex, e.cellIndex)){
                        this.focus.setFocusCell(e.cell, e.rowIndex);
                }
                // in some cases click[0] is null which causes false doubeClicks. Fixes #100703
                if(this._click.length > 1 && this._click[0] == null){
                        this._click.shift();
                }
                this.onRowClick(e);
        },

        onCellDblClick: function(e){
                // summary:
                //              Event fired when a cell is double-clicked.
                // e: Event
                //              Decorated event object contains reference to grid, cell, and rowIndex
                var event;
                if(this._click.length > 1 && has('ie')){
                        event = this._click[1];
                }else if(this._click.length > 1 && this._click[0].rowIndex != this._click[1].rowIndex){
                        event = this._click[0];
                }else{
                        event = e;
                }
                this.focus.setFocusCell(event.cell, event.rowIndex);
                this.edit.setEditCell(event.cell, event.rowIndex);
                this.onRowDblClick(e);
        },

        onCellContextMenu: function(e){
                // summary:
                //              Event fired when a cell context menu is accessed via mouse right click.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
                this.onRowContextMenu(e);
        },

        onCellFocus: function(inCell, inRowIndex){
                // summary:
                //              Event fired when a cell receives focus.
                // inCell: Object
                //              Cell object containing properties of the grid column.
                // inRowIndex: Integer
                //              Index of the grid row
                this.edit.cellFocus(inCell, inRowIndex);
        },

        // row events
        onRowClick: function(e){
                // summary:
                //              Event fired when a row is clicked.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
                this.edit.rowClick(e);
                this.selection.clickSelectEvent(e);
        },

        onRowDblClick: function(e){
                // summary:
                //              Event fired when a row is double clicked.
                // e: Event
                //              decorated event object which contains reference to grid, cell, and rowIndex
        },

        onRowMouseOver: function(e){
                // summary:
                //              Event fired when mouse moves over a data row.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
        },

        onRowMouseOut: function(e){
                // summary:
                //              Event fired when mouse moves out of a data row.
                // e: Event
                //              Decorated event object contains reference to grid, cell, and rowIndex
        },
        
        onRowMouseDown: function(e){
                // summary:
                //              Event fired when mouse is down in a row.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
        },

        onRowContextMenu: function(e){
                // summary:
                //              Event fired when a row context menu is accessed via mouse right click.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
                event.stop(e);
        },

        // header events
        onHeaderMouseOver: function(e){
                // summary:
                //              Event fired when mouse moves over the grid header.
                // e: Event
                //              Decorated event object contains reference to grid, cell, and rowIndex
        },

        onHeaderMouseOut: function(e){
                // summary:
                //              Event fired when mouse moves out of the grid header.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
        },

        onHeaderCellMouseOver: function(e){
                // summary:
                //              Event fired when mouse moves over a header cell.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
                if(e.cellNode){
                        domClass.add(e.cellNode, this.cellOverClass);
                }
        },

        onHeaderCellMouseOut: function(e){
                // summary:
                //              Event fired when mouse moves out of a header cell.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
                if(e.cellNode){
                        domClass.remove(e.cellNode, this.cellOverClass);
                }
        },
        
        onHeaderCellMouseDown: function(e) {
                // summary:
                //              Event fired when mouse is down in a header cell.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
        },

        onHeaderClick: function(e){
                // summary:
                //              Event fired when the grid header is clicked.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
        },

        onHeaderCellClick: function(e){
                // summary:
                //              Event fired when a header cell is clicked.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
                this.setSortIndex(e.cell.index);
                this.onHeaderClick(e);
        },

        onHeaderDblClick: function(e){
                // summary:
                //              Event fired when the grid header is double clicked.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
        },

        onHeaderCellDblClick: function(e){
                // summary:
                //              Event fired when a header cell is double clicked.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
                this.onHeaderDblClick(e);
        },

        onHeaderCellContextMenu: function(e){
                // summary:
                //              Event fired when a header cell context menu is accessed via mouse right click.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
                this.onHeaderContextMenu(e);
        },

        onHeaderContextMenu: function(e){
                // summary:
                //              Event fired when the grid header context menu is accessed via mouse right click.
                // e: Event
                //              Decorated event object which contains reference to grid, cell, and rowIndex
                if(!this.headerMenu){
                        event.stop(e);
                }
        },

        // editing
        onStartEdit: function(inCell, inRowIndex){
                // summary:
                //              Event fired when editing is started for a given grid cell
                // inCell: Object
                //              Cell object containing properties of the grid column.
                // inRowIndex: Integer
                //              Index of the grid row
        },

        onApplyCellEdit: function(inValue, inRowIndex, inFieldIndex){
                // summary:
                //              Event fired when editing is applied for a given grid cell
                // inValue: String
                //              Value from cell editor
                // inRowIndex: Integer
                //              Index of the grid row
                // inFieldIndex: Integer
                //              Index in the grid's data store
        },

        onCancelEdit: function(inRowIndex){
                // summary:
                //              Event fired when editing is cancelled for a given grid cell
                // inRowIndex: Integer
                //              Index of the grid row
        },

        onApplyEdit: function(inRowIndex){
                // summary:
                //              Event fired when editing is applied for a given grid row
                // inRowIndex: Integer
                //              Index of the grid row
        },

        onCanSelect: function(inRowIndex){
                // summary:
                //              Event to determine if a grid row may be selected
                // inRowIndex: Integer
                //              Index of the grid row
                // returns: Boolean
                //              true if the row can be selected
                return true;
        },

        onCanDeselect: function(inRowIndex){
                // summary:
                //              Event to determine if a grid row may be deselected
                // inRowIndex: Integer
                //              Index of the grid row
                // returns: Boolean
                //              true if the row can be deselected
                return true;
        },

        onSelected: function(inRowIndex){
                // summary:
                //              Event fired when a grid row is selected
                // inRowIndex: Integer
                //              Index of the grid row
                this.updateRowStyles(inRowIndex);
        },

        onDeselected: function(inRowIndex){
                // summary:
                //              Event fired when a grid row is deselected
                // inRowIndex: Integer
                //              Index of the grid row
                this.updateRowStyles(inRowIndex);
        },

        onSelectionChanged: function(){
        }
});
});