接口 ILiveHelpAction 用来构建活动帮助操作。
可直接实现 ILiveHelpAction。您必须实现两个方法。
以下是实时帮助操作打开消息对话框的简单实现。我们不需要从 JavaScript 获得任何信息,因此忽略初始化数据。
package org.eclipse.platform.doc.isv.activeHelp;
import org.eclipse.help.ILiveHelpAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.widgets.*;
import org.eclipse.ui.*;
/**
* Sample Active Help action.
*/
public class ActiveHelpOpenDialogAction implements ILiveHelpAction {
public void setInitializationString(String data) {
// ignore the data. We do not use any javascript parameters.
}
public void run() {
// Active help does not run on the UI thread, so we must use syncExec
Display.getDefault().syncExec(new Runnable() {
public void run() {
IWorkbenchWindow window =
PlatformUI.getWorkbench().getActiveWorkbenchWindow();
if (window != null) {
// Bring the Workbench window to the top of other windows;
// On some Windows systems, it will only flash the Workbench
// icon on the task bar
Shell shell = window.getShell();
shell.setMinimized(false);
shell.forceActive();
// Open a message dialog
MessageDialog.openInformation(
window.getShell(),
"Hello World.",
"Hello World.");
}
}
});
}
}