在用 extjs editorgridpanel 進行輸入編輯的時候, 默認情況下只支持使用 tab 鍵可以實現焦點切換, 如果想讓editorgridpanel 在編輯時通過方向鍵來實現焦點跳轉切換，只需加上以下代碼：
//讓grid支持方向鍵盤 by liongis@163.com
Ext.override(Ext.grid.CellSelectionModel, {
onEditorKey : function(field, e) {
var smodel = this;
var k = e.getKey(), newCell, g = smodel.grid, ed = g.activeEditor;
switch(k){
case e.TAB:
e.stopEvent();
ed.completeEdit();
if (e.shiftKey) {
newCell = g.walkCells(ed.row, ed.col-1, -1, smodel.acceptsNav, smodel);
} else {
newCell = g.walkCells(ed.row, ed.col+1, 1, smodel.acceptsNav, smodel);
}
if (ed.col == 1) {
if (e.shiftKey) {
newCell = g.walkCells(ed.row, ed.col+1, -1, smodel.acceptsNav, smodel);
} else {
newCell = g.walkCells(ed.row, ed.col+1, 1, smodel.acceptsNav, smodel);
}
}
break;
case e.UP:
e.stopEvent();
ed.completeEdit();
newCell = g.walkCells(ed.row-1, ed.col, -1, smodel.acceptsNav, smodel);
break;
case e.DOWN:
e.stopEvent();
ed.completeEdit();
newCell = g.walkCells(ed.row+1, ed.col, 1, smodel.acceptsNav, smodel);
break;
case e.LEFT:
e.stopEvent();
ed.completeEdit();
newCell = g.walkCells(ed.row, ed.col-1, -1, smodel.acceptsNav, smodel);
break;
case e.RIGHT:
e.stopEvent();
ed.completeEdit();
newCell = g.walkCells(ed.row, ed.col+1, 1, smodel.acceptsNav, smodel);
break;
}
if (newCell) {
g.startEditing(newCell[0], newCell[1]);
}
}
});
注意：這里重寫的是：CellSelectionModel ，而不是RowSelectionMode
原文出自：
http://www.cnblogs.com/liongis/p/3284620.html