让快捷键【Ctrl+Shift+↓】执行和Excel行为相同的向下扩展选中行为

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本帖最后由 Richard.Ma 于 2023-10-30 17:42 编辑

SpreadJS和Excel由于设计的差异，在一些行为上存在不同。当选中区域后，使用快捷键【Ctrl+Shift+↓】来进行向下扩展选中区域的时候，

SpreadJS会直接将当前选中区域的尾行直接扩展到sheet最下方

Excel会根据文字区域逐个向下扩展

在使用spreadjs的过程中，如果想要spreadJS能实现同样的效果，我们可以通过重写spreadJS给【Ctrl+Shift+↓】绑定的命令selectionBottom来实现

首先定义一个command，在其中通过spreadJS提供的search方法，设置选项通配符匹配，通过"?" 来匹配选中区域下方的非空单元格。然后修改选中区域范围

var selectionBottomCmd = {
canUndo: true,
execute: function(spread, options, isUndo) {
var Commands = GC.Spread.Sheets.Commands;
if (isUndo) {
Commands.undoTransaction(spread, options);
return true;
} else {
Commands.startTransaction(spread, options);
console.log("start");
spread.suspendPaint();
var sheet = spread.getActiveSheet();
var selections = sheet.getSelections();
var newselection=[];
selections.forEach((selection)=>{
var searchCondition = new GC.Spread.Sheets.Search.SearchCondition();
searchCondition.searchString = "?";
searchCondition.startSheetIndex = spread.getActiveSheetIndex();
searchCondition.endSheetIndex = spread.getActiveSheetIndex();
searchCondition.columnStart = selection.col;
searchCondition.columnEnd = selection.col+selection.colCount-1;
searchCondition.rowStart = selection.row+selection.rowCount;
searchCondition.rowEnd = sheet.getRowCount()-1;
searchCondition.searchFlags = GC.Spread.Sheets.Search.SearchFlags.ignoreCase| GC.Spread.Sheets.Search.SearchFlags.useWildCards|GC.Spread.Sheets.Search.SearchFlags.blockRange;
var searchresult= sheet.search(searchCondition);
var newendrowindx=searchresult.foundRowIndex!=-1?searchresult.foundRowIndex:sheet.getRowCount()-1;
newselection.push(new GC.Spread.Sheets.Range(selection.row,selection.col,newendrowindx-selection.row+1,selection.colCount))
});
sheet.clearSelection();
newselection.forEach((selection)=>{
console.log(selection);
if(selection)
sheet.addSelection(selection.row,selection.col,selection.rowCount,selection.colCount)
})
spread.resumePaint();
Commands.endTransaction(spread, options);
return true;
}
}
};

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将这个创建的command 注册为名称为"selectionBottom"的command来覆盖原有的同名命令，注册的同时也给设置了相同的快捷键【Ctrl+Shift+↓】

这里的40是向下箭头对应的KeyCode。

var commandManager = spread.commandManager();
commandManager.register('selectionBottom', selectionBottomCmd,40,true,true);

复制代码

接下来，你可以看到在SpreadJS中点击上述快捷键。也实现了和Excel相同的向下扩展选中你的效果

最后，附上上述代码的完整demo

OverrideSelectionBottom.zip (2.03 KB, 下载次数: 19)

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让快捷键【Ctrl+Shift+↓】执行和Excel行为相同的向下扩展选中行为

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