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+Sencha Documentation Project/**
+ * @class Ext.selection.RowModel
+ * @extends Ext.selection.Model
+ *
+ * Implement row based navigation via keyboard.
+ *
+ * Must synchronize across grid sections
+ */
+Ext.define('Ext.selection.RowModel', {
+ extend: 'Ext.selection.Model',
+ alias: 'selection.rowmodel',
+ requires: ['Ext.util.KeyNav'],
+
+ /**
+ * @private
+ * Number of pixels to scroll to the left/right when pressing
+ * left/right keys.
+ */
+ deltaScroll: 5,
+
+ /**
+ * @cfg {Boolean} enableKeyNav
+ *
+ * Turns on/off keyboard navigation within the grid. Defaults to true.
+ */
+ enableKeyNav: true,
+
+ constructor: function(){
+ this.addEvents(
+ /**
+ * @event deselect
+ * Fired after a record is deselected
+ * @param {Ext.selection.RowSelectionModel} this
+ * @param {Ext.data.Model} record The deselected record
+ * @param {Number} index The row index deselected
+ */
+ 'deselect',
+
+ /**
+ * @event select
+ * Fired after a record is selected
+ * @param {Ext.selection.RowSelectionModel} this
+ * @param {Ext.data.Model} record The selected record
+ * @param {Number} index The row index selected
+ */
+ 'select'
+ );
+ this.callParent(arguments);
+ },
+
+ bindComponent: function(view) {
+ var me = this;
+
+ me.views = me.views || [];
+ me.views.push(view);
+ me.bind(view.getStore(), true);
+
+ view.on({
+ itemmousedown: me.onRowMouseDown,
+ scope: me
+ });
+
+ if (me.enableKeyNav) {
+ me.initKeyNav(view);
+ }
+ },
+
+ initKeyNav: function(view) {
+ var me = this;
+
+ if (!view.rendered) {
+ view.on('render', Ext.Function.bind(me.initKeyNav, me, [view], 0), me, {single: true});
+ return;
+ }
+
+ view.el.set({
+ tabIndex: -1
+ });
+
+ // view.el has tabIndex -1 to allow for
+ // keyboard events to be passed to it.
+ me.keyNav = new Ext.util.KeyNav(view.el, {
+ up: me.onKeyUp,
+ down: me.onKeyDown,
+ right: me.onKeyRight,
+ left: me.onKeyLeft,
+ pageDown: me.onKeyPageDown,
+ pageUp: me.onKeyPageUp,
+ home: me.onKeyHome,
+ end: me.onKeyEnd,
+ scope: me
+ });
+ view.el.on(Ext.EventManager.getKeyEvent(), me.onKeyPress, me);
+ },
+
+ // Returns the number of rows currently visible on the screen or
+ // false if there were no rows. This assumes that all rows are
+ // of the same height and the first view is accurate.
+ getRowsVisible: function() {
+ var rowsVisible = false,
+ view = this.views[0],
+ row = view.getNode(0),
+ rowHeight, gridViewHeight;
+
+ if (row) {
+ rowHeight = Ext.fly(row).getHeight();
+ gridViewHeight = view.el.getHeight();
+ rowsVisible = Math.floor(gridViewHeight / rowHeight);
+ }
+
+ return rowsVisible;
+ },
+
+ // go to last visible record in grid.
+ onKeyEnd: function(e, t) {
+ var me = this,
+ last = me.store.getAt(me.store.getCount() - 1);
+
+ if (last) {
+ if (e.shiftKey) {
+ me.selectRange(last, me.lastFocused || 0);
+ me.setLastFocused(last);
+ } else if (e.ctrlKey) {
+ me.setLastFocused(last);
+ } else {
+ me.doSelect(last);
+ }
+ }
+ },
+
+ // go to first visible record in grid.
+ onKeyHome: function(e, t) {
+ var me = this,
+ first = me.store.getAt(0);
+
+ if (first) {
+ if (e.shiftKey) {
+ me.selectRange(first, me.lastFocused || 0);
+ me.setLastFocused(first);
+ } else if (e.ctrlKey) {
+ me.setLastFocused(first);
+ } else {
+ me.doSelect(first, false);
+ }
+ }
+ },
+
+ // Go one page up from the lastFocused record in the grid.
+ onKeyPageUp: function(e, t) {
+ var me = this,
+ rowsVisible = me.getRowsVisible(),
+ selIdx,
+ prevIdx,
+ prevRecord,
+ currRec;
+
+ if (rowsVisible) {
+ selIdx = me.lastFocused ? me.store.indexOf(me.lastFocused) : 0;
+ prevIdx = selIdx - rowsVisible;
+ if (prevIdx < 0) {
+ prevIdx = 0;
+ }
+ prevRecord = me.store.getAt(prevIdx);
+ if (e.shiftKey) {
+ currRec = me.store.getAt(selIdx);
+ me.selectRange(prevRecord, currRec, e.ctrlKey, 'up');
+ me.setLastFocused(prevRecord);
+ } else if (e.ctrlKey) {
+ e.preventDefault();
+ me.setLastFocused(prevRecord);
+ } else {
+ me.doSelect(prevRecord);
+ }
+
+ }
+ },
+
+ // Go one page down from the lastFocused record in the grid.
+ onKeyPageDown: function(e, t) {
+ var me = this,
+ rowsVisible = me.getRowsVisible(),
+ selIdx,
+ nextIdx,
+ nextRecord,
+ currRec;
+
+ if (rowsVisible) {
+ selIdx = me.lastFocused ? me.store.indexOf(me.lastFocused) : 0;
+ nextIdx = selIdx + rowsVisible;
+ if (nextIdx >= me.store.getCount()) {
+ nextIdx = me.store.getCount() - 1;
+ }
+ nextRecord = me.store.getAt(nextIdx);
+ if (e.shiftKey) {
+ currRec = me.store.getAt(selIdx);
+ me.selectRange(nextRecord, currRec, e.ctrlKey, 'down');
+ me.setLastFocused(nextRecord);
+ } else if (e.ctrlKey) {
+ // some browsers, this means go thru browser tabs
+ // attempt to stop.
+ e.preventDefault();
+ me.setLastFocused(nextRecord);
+ } else {
+ me.doSelect(nextRecord);
+ }
+ }
+ },
+
+ // Select/Deselect based on pressing Spacebar.
+ // Assumes a SIMPLE selectionmode style
+ onKeyPress: function(e, t) {
+ if (e.getKey() === e.SPACE) {
+ e.stopEvent();
+ var me = this,
+ record = me.lastFocused;
+
+ if (record) {
+ if (me.isSelected(record)) {
+ me.doDeselect(record, false);
+ } else {
+ me.doSelect(record, true);
+ }
+ }
+ }
+ },
+
+ // Navigate one record up. This could be a selection or
+ // could be simply focusing a record for discontiguous
+ // selection. Provides bounds checking.
+ onKeyUp: function(e, t) {
+ var me = this,
+ view = me.views[0],
+ idx = me.store.indexOf(me.lastFocused),
+ record;
+
+ if (idx > 0) {
+ // needs to be the filtered count as thats what
+ // will be visible.
+ record = me.store.getAt(idx - 1);
+ if (e.shiftKey && me.lastFocused) {
+ if (me.isSelected(me.lastFocused) && me.isSelected(record)) {
+ me.doDeselect(me.lastFocused, true);
+ me.setLastFocused(record);
+ } else if (!me.isSelected(me.lastFocused)) {
+ me.doSelect(me.lastFocused, true);
+ me.doSelect(record, true);
+ } else {
+ me.doSelect(record, true);
+ }
+ } else if (e.ctrlKey) {
+ me.setLastFocused(record);
+ } else {
+ me.doSelect(record);
+ //view.focusRow(idx - 1);
+ }
+ }
+ // There was no lastFocused record, and the user has pressed up
+ // Ignore??
+ //else if (this.selected.getCount() == 0) {
+ //
+ // this.doSelect(record);
+ // //view.focusRow(idx - 1);
+ //}
+ },
+
+ // Navigate one record down. This could be a selection or
+ // could be simply focusing a record for discontiguous
+ // selection. Provides bounds checking.
+ onKeyDown: function(e, t) {
+ var me = this,
+ view = me.views[0],
+ idx = me.store.indexOf(me.lastFocused),
+ record;
+
+ // needs to be the filtered count as thats what
+ // will be visible.
+ if (idx + 1 < me.store.getCount()) {
+ record = me.store.getAt(idx + 1);
+ if (me.selected.getCount() === 0) {
+ me.doSelect(record);
+ //view.focusRow(idx + 1);
+ } else if (e.shiftKey && me.lastFocused) {
+ if (me.isSelected(me.lastFocused) && me.isSelected(record)) {
+ me.doDeselect(me.lastFocused, true);
+ me.setLastFocused(record);
+ } else if (!me.isSelected(me.lastFocused)) {
+ me.doSelect(me.lastFocused, true);
+ me.doSelect(record, true);
+ } else {
+ me.doSelect(record, true);
+ }
+ } else if (e.ctrlKey) {
+ me.setLastFocused(record);
+ } else {
+ me.doSelect(record);
+ //view.focusRow(idx + 1);
+ }
+ }
+ },
+
+ scrollByDeltaX: function(delta) {
+ var view = this.views[0],
+ section = view.up(),
+ hScroll = section.horizontalScroller;
+
+ if (hScroll) {
+ hScroll.scrollByDeltaX(delta);
+ }
+ },
+
+ onKeyLeft: function(e, t) {
+ this.scrollByDeltaX(-this.deltaScroll);
+ },
+
+ onKeyRight: function(e, t) {
+ this.scrollByDeltaX(this.deltaScroll);
+ },
+
+ // Select the record with the event included so that
+ // we can take into account ctrlKey, shiftKey, etc
+ onRowMouseDown: function(view, record, item, index, e) {
+ view.el.focus();
+ this.selectWithEvent(record, e);
+ },
+
+ // Allow the GridView to update the UI by
+ // adding/removing a CSS class from the row.
+ onSelectChange: function(record, isSelected, suppressEvent) {
+ var me = this,
+ views = me.views,
+ viewsLn = views.length,
+ store = me.store,
+ rowIdx = store.indexOf(record),
+ i = 0;
+
+ for (; i < viewsLn; i++) {
+ if (isSelected) {
+ views[i].onRowSelect(rowIdx, suppressEvent);
+ if (!suppressEvent) {
+ me.fireEvent('select', me, record, rowIdx);
+ }
+ } else {
+ views[i].onRowDeselect(rowIdx, suppressEvent);
+ if (!suppressEvent) {
+ me.fireEvent('deselect', me, record, rowIdx);
+ }
+ }
+ }
+ },
+
+ // Provide indication of what row was last focused via
+ // the gridview.
+ onLastFocusChanged: function(oldFocused, newFocused, supressFocus) {
+ var views = this.views,
+ viewsLn = views.length,
+ store = this.store,
+ rowIdx,
+ i = 0;
+
+ if (oldFocused) {
+ rowIdx = store.indexOf(oldFocused);
+ if (rowIdx != -1) {
+ for (; i < viewsLn; i++) {
+ views[i].onRowFocus(rowIdx, false);
+ }
+ }
+ }
+
+ if (newFocused) {
+ rowIdx = store.indexOf(newFocused);
+ if (rowIdx != -1) {
+ for (i = 0; i < viewsLn; i++) {
+ views[i].onRowFocus(rowIdx, true, supressFocus);
+ }
+ }
+ }
+ },
+
+ onEditorTab: function(editingPlugin, e) {
+ var me = this,
+ view = me.views[0],
+ record = editingPlugin.getActiveRecord(),
+ header = editingPlugin.getActiveColumn(),
+ position = view.getPosition(record, header),
+ direction = e.shiftKey ? 'left' : 'right',
+ newPosition = view.walkCells(position, direction, e, this.preventWrap);
+
+ if (newPosition) {
+ editingPlugin.startEditByPosition(newPosition);
+ }
+ },
+
+ selectByPosition: function(position) {
+ var record = this.store.getAt(position.row);
+ this.select(record);
+ }
+});
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