使用Google Apps脚本构建网络应用,当我在网格小部件中放置按钮小部件时,整个网格似乎变成了“按钮”。
即。如果我把:
var myGrid = app.createGrid(4,4);
var addButton = myGrid.setWidget(3,3,app.createButton("Add"));
var handler = app.createServerClickHandler('add');
addButton.addClickHandler(handler);
app.add(myGrid);
在生成的网络应用程序中,如果我点击网格上的任意位置,按钮的点击处理程序将会触发。更糟糕的是,如果我在网格中嵌入了多个按钮,则点击网格上的任何位置都会触发所有按钮点击处理程序。
网格中的按钮是否不受支持?或者我做错了什么?
感谢。
编辑:如果您想亲眼看到这种行为,我通过修改Google的一个示例来复制该问题。这里的“Validators”的第二个例子是:https://developers.google.com/apps-script/uiapp#Validators我修改了文本框和按钮并将其放在Grid Widget中。在文本框中输入数字后,每次单击网格上的任意位置时,“添加”点击处理程序将触发并再次添加数字:
function doGet() {
var app = UiApp.createApplication();
var rgx = "^\\$?[0-9]+$";
// Create input boxes and button.
//var textBoxA = app.createTextBox().setId('textBoxA').setName('textBoxA');
//var textBoxB = app.createTextBox().setId('textBoxB').setName('textBoxB');
var myGrid = app.createGrid(4,4);
myGrid.setWidget(0,0,app.createTextBox().setId('textBoxA').setName('textBoxA'));
myGrid.setWidget(0,1,app.createTextBox().setId('textBoxB').setName('textBoxB'));
var textBoxA = app.getElementById('textBoxA');
var textBoxB = app.getElementById('textBoxB');
var addButton = myGrid.setWidget(3,3,app.createButton("Add").setEnabled(false));
var label = app.createLabel("Please input two numbers");
// Create a handler to call the adding function.
// Two validations are added to this handler so that it will
// only invoke 'add' if both textBoxA and textBoxB contain
// numbers.
var handler = app.createServerClickHandler('add').validateMatches(textBoxA,rgx).validateMatches(textBoxBrgx).addCallbackElement(textBoxA).addCallbackElement(textBoxB);
// Create a handler to enable the button if all input is legal
var onValidInput = app.createClientHandler().validateMatches(textBoxA,rgx).validateMatches(textBoxB,rgx).forTargets(addButton).setEnabled(true).forTargets(label).setVisible(false);
// Create a handler to mark invalid input in textBoxA and disable the button
var onInvalidInput1 = app.createClientHandler().validateNotMatches(textBoxA,rgx).forTargets(addButton).setEnabled (false).forTargets(textBoxA).setStyleAttribute("color", "red").forTargets(label).setVisible(true);
// Create a handler to mark the input in textBoxA as valid
var onValidInput1 = app.createClientHandler().validateMatches(textBoxA,rgx).forTargets(textBoxA).setStyleAttribute("color", "black");
// Create a handler to mark invalid input in textBoxB and disable the button
var onInvalidInput2 = app.createClientHandler().validateNotMatches(textBoxB,rgx).forTargets(addButton).setEnabled(false).forTargets(textBoxB).setStyleAttribute("color", "red").forTargets(label).setVisible(true);
// Create a handler to mark the input in textBoxB as valid
var onValidInput2 = app.createClientHandler().validateMatches(textBoxB,rgx).forTargets(textBoxB).setStyleAttribute("color","black");
// Add all the handlers to be called when the user types in the text boxes
textBoxA.addKeyUpHandler(onInvalidInput1);
textBoxB.addKeyUpHandler(onInvalidInput2);
textBoxA.addKeyUpHandler(onValidInput1);
textBoxB.addKeyUpHandler(onValidInput2);
textBoxA.addKeyUpHandler(onValidInput);
textBoxB.addKeyUpHandler(onValidInput);
addButton.addClickHandler(handler);
app.add(myGrid);
//app.add(textBoxB);
//app.add(addButton);
app.add(label);
return app;
}
function add(e) {
var app = UiApp.getActiveApplication();
var result = parseFloat(e.parameter.textBoxA) + parseFloat(e.parameter.textBoxB);
var newResultLabel = app.createLabel("Result is: " + result);
app.add(newResultLabel);
return app;
}
答案 0 :(得分:1)
写作时
var addButton = myGrid.setWidget(3,3,app.createButton("Add"));
然后你为变量addButton
添加一个处理程序,你实际上是将处理程序添加到网格中,而不是添加到按钮。
我建议像这样重写它(我评论了代码),它会正常工作
var myGrid = app.createGrid(4,4);
var addButton = app.createButton("Add");
myGrid.setWidget(3,3,addButton);// here you add the button to the grid
var handler = app.createServerClickHandler('add');
addButton.addClickHandler(handler);
app.add(myGrid);// only the grid must be added, the button is already in it
或者,如果你想让它更紧凑:
var handler = app.createServerClickHandler('add');
var myGrid = app.createGrid(4,4).setWidget(3,3,createButton("Add",handler));// here you add the button to the grid
app.add(myGrid);// only the grid must be added, the button is already in it