I. Overview
1.1 Problem
Two situations:
1) The report is embedded in the iframe of a page, and the method defined in the page needs to be obtained in the report template;
2) The report is embedded in the iframe of a page, and the method in the other iframe of the page needs to be obtained in the report template.
1.2 Solution
First obtain the object where the method is located through JavaScript, and then call it through the method name:
In case 1, the page is the parent to the template, so the parent page method can be called through parent.window.fnname() ;
In case 2, get another iframe through the parent page, and then call the method: parent.window.getElementById("iframename").contentWindow.fnname().
II. Example
2.1 Page design
In the following page1.html, a report.cpt and page2.html page are embedded through an iframe; the method fun1 is defined in page1:
<html>
<head>
<title>page1</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript">
function fun1(){
alert("This is the method in the main page!");
}
</script>
</head>
<body>
<p>This is page1</p>
<iframe src="/webroot/help/page2.html" name="page2" id="page2" ></iframe>
<iframe src="/webroot/decision/view/report?viewlet=report.cpt" name="report" scrolling="auto"></iframe>
</body>
</html>
There is also a method fun2 defined in page2.html:
<html>
<head>
<title>page2</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript">
function fun2(){
var name = alert("This is the method embedded in the page in another iframe!")
}
</script>
</head>
<body>
<P>This is page2! </p>
</body>
</html>
The page1.html , page2.html should be saved under webapps\webroot\help directory.
2.2 Call the JavaScript method in the template
For example, add a button to the parameter pane of the report.cpt template. In the button click event, get the methods in page1 and page2. The JavaScript is as follows:
var page1 = parent.window;
page1.fun1();
var page2 = page1.document.getElementById("page2").contentWindow;
page2.fun2();
report.cpt should be saved under webapps\webroot\WEB-INF\reportlets
2.3 Preview effect
Open the browser and enter http://localhost:8075/webroot/help/page1.html . You can see the effect shown in the figure at the beginning.
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