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[md] action.actionPerformed + screen shot

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Anna Bulenkova 2015-01-21 12:26:26 +01:00
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tutorials/action_system/action_system.md
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@ -28,7 +28,7 @@ class:
The only method of an inheritor of The only method of an inheritor of
[AnAction] (https://github.com/JetBrains/intellij-community/blob/master/platform/editor-ui-api/src/com/intellij/openapi/actionSystem/AnAction.java) [AnAction] (https://github.com/JetBrains/intellij-community/blob/master/platform/editor-ui-api/src/com/intellij/openapi/actionSystem/AnAction.java)
which needs to be overridden is ```public void actionPerformed(AnActionEvent anActionEvent);``` which needs to be overridden is ```public void actionPerformed(AnActionEvent anActionEvent);```
, and it should contain a part of code to be executed after the action has been invoked. , and it should contain a part of code to be executed after the action has been invoked. In this case the action does nothing.
public class SimpleAction extends AnAction { public class SimpleAction extends AnAction {
@Override @Override
@ -151,7 +151,23 @@ If you cannot understand the state of the action fast you should do it in the
[AnActionEvent] (https://github.com/JetBrains/intellij-community/blob/ff16ce78a1e0ddb6e67fd1dbc6e6a597e20d483a/platform/editor-ui-api/src/com/intellij/openapi/actionSystem/AnActionEvent.java) [AnActionEvent] (https://github.com/JetBrains/intellij-community/blob/ff16ce78a1e0ddb6e67fd1dbc6e6a597e20d483a/platform/editor-ui-api/src/com/intellij/openapi/actionSystem/AnActionEvent.java)
method and notify the user that action cannot be executed if it's the case. method and notify the user that action cannot be executed if it's the case.
------------- ##Performing an action.
In order to make the action do something we need to implement it's ```public void actionPerformed(AnActionEvent anActionEvent);``` method.
In the following example action invokes a dialog that shows information about a selected Project View Item and has no icon and any pre-selected default option:
@Override
public void actionPerformed(AnActionEvent anActionEvent) {
Object navigatable = anActionEvent.getData(CommonDataKeys.NAVIGATABLE);
if (navigatable != null) {
Messages.showDialog(navigatable.toString(), "Selected Element:", new String[]{"OK"}, -1, null);
}
}
After compiling and running the plugin project and invoking the action, the dialog will pop up:
!["Register action" quick fix](img/action_performed.png)
-------------
#How to create a custom group of actions? #How to create a custom group of actions?

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