View Menus,Toolbars and Actions

This extension point is deprecated

Identifier:
org.eclipse.ui.viewActions

Description:

WARNING: This extension point is DEPRECATED.
Do not use this extension point, it will be removed in future versions of this product. Instead, use the extension point org.eclipse.ui.commands

This extension point is used to add actions to the pulldown menu and toolbar for views registered by other plug-ins. Each view has a local pulldown menu normally activated by clicking on the top right triangle button. Other plug-ins can contribute submenus and actions to this menu. Plug-ins may also contribute actions to a view toolbar. View owners are first given a chance to populate these areas. Optional additions by other plug-ins are appended.

You can now use org.eclipse.ui.menus to place commands in menus and toolbars as well.

An action's enablement and/or visibility can be defined using the elements enablement and visibility respectively, if the extension point supports it. These two elements contain a boolean expression that is evaluated to determine the enablement and/or visibility.

The syntax is the same for the enablement and visibility elements. Both contain only one boolean expression sub-element. In the simplest case, this will be an objectClass, objectState, pluginState, or systemProperty element. In the more complex case, the and, or, and not elements can be combined to form a boolean expression. Both the and, and or elements must contain 2 sub-elements. The not element must contain only 1 sub-element.

Configuration Markup:

<!ELEMENT extension (viewContribution+)>

<!ATTLIST extension

point CDATA #REQUIRED

id    CDATA #IMPLIED

name  CDATA #IMPLIED>


The viewContribution element is deprecated

<!ELEMENT viewContribution (menu* , action*)>

<!ATTLIST viewContribution

id       CDATA #REQUIRED

targetID IDREF #REQUIRED>

This element is used to define a group of view actions and/or menus.



The action element is deprecated

<!ELEMENT action ((selection* | enablement?) , class?)>

<!ATTLIST action

id            CDATA #REQUIRED

label         CDATA #REQUIRED

definitionId  IDREF #IMPLIED

menubarPath   CDATA #IMPLIED

toolbarPath   CDATA #IMPLIED

icon          CDATA #IMPLIED

disabledIcon  CDATA #IMPLIED

hoverIcon     CDATA #IMPLIED

tooltip       CDATA #IMPLIED

helpContextId CDATA #IMPLIED

style         (push|radio|toggle|pulldown) "push"

state         (true | false)

class         CDATA #REQUIRED

enablesFor    CDATA #IMPLIED

mode          (FORCE_TEXT) >

This element defines an action that the user can invoke in the UI.



The parameter element is deprecated

<!ELEMENT parameter EMPTY>

<!ATTLIST parameter

name  CDATA #REQUIRED

value CDATA #REQUIRED>

A parameter element to be used within an IExecutableExtension element. This will be passed as initialization data to the instantiated class.



The class element is deprecated

<!ELEMENT class (parameter*)>

<!ATTLIST class

class CDATA #IMPLIED>

The element version of the class attribute. This is used when the class implements org.eclipse.core.runtime.IExecutableExtension and there is parameterized data that you wish used in its initialization.



<!ELEMENT menu (separator* , groupMarker*)>

<!ATTLIST menu

id    CDATA #REQUIRED

label CDATA #REQUIRED

path  CDATA #IMPLIED

icon  CDATA #IMPLIED>

This element is used to defined a new menu.



<!ELEMENT separator EMPTY>

<!ATTLIST separator

name CDATA #REQUIRED>

This element is used to create a menu separator in the new menu.



<!ELEMENT groupMarker EMPTY>

<!ATTLIST groupMarker

name CDATA #REQUIRED>

This element is used to create a named group in the new menu. It has no visual representation in the new menu, unlike the separator element.



<!ELEMENT selection EMPTY>

<!ATTLIST selection

class CDATA #REQUIRED

name  CDATA #IMPLIED>

This element is used to help determine the action enablement based on the current selection. Ignored if the enablement element is specified.



<!ELEMENT enablement (and | or | not | objectClass | objectState | pluginState | systemProperty)>

This element is used to define the enablement for the extension.



<!ELEMENT visibility (and | or | not | objectClass | objectState | pluginState | systemProperty)>

This element is used to define the visibility for the extension.



<!ELEMENT and (and | or | not | objectClass | objectState | pluginState | systemProperty)>

This element represent a boolean AND operation on the result of evaluating its two sub-element expressions.



<!ELEMENT or (and | or | not | objectClass | objectState | pluginState | systemProperty)>

This element represent a boolean OR operation on the result of evaluating its two sub-element expressions.



<!ELEMENT not (and | or | not | objectClass | objectState | pluginState | systemProperty)>

This element represent a boolean NOT operation on the result of evaluating its sub-element expressions.



<!ELEMENT objectClass EMPTY>

<!ATTLIST objectClass

name CDATA #REQUIRED>

This element is used to evaluate the class or interface of each object in the current selection. If each object in the selection implements the specified class or interface, the expression is evaluated as true.



<!ELEMENT objectState EMPTY>

<!ATTLIST objectState

name  CDATA #REQUIRED

value CDATA #REQUIRED>

This element is used to evaluate the attribute state of each object in the current selection. If each object in the selection has the specified attribute state, the expression is evaluated as true. To evaluate this type of expression, each object in the selection must implement, or adapt to, org.eclipse.ui.IActionFilter interface.



<!ELEMENT pluginState EMPTY>

<!ATTLIST pluginState

id    CDATA #REQUIRED

value (installed|activated) "installed">

This element is used to evaluate the state of a plug-in. The state of the plug-in may be one of the following: installed (equivalent to the OSGi concept of "resolved") or activated (equivalent to the OSGi concept of "active").



<!ELEMENT systemProperty EMPTY>

<!ATTLIST systemProperty

name  CDATA #REQUIRED

value CDATA #REQUIRED>

This element is used to evaluate the state of some system property. The property value is retrieved from the java.lang.System.



Examples:
The following is an example of a view action extension:


   <extension point="org.eclipse.ui.viewActions"> 
      <viewContribution 
         id="com.xyz.xyzViewC1" 
         targetID="org.eclipse.ui.views.navigator.ResourceNavigator"> 
         <menu
            id="com.xyz.xyzMenu" 
            label="XYZ Menu" 
            path="additions"> 
            <separator name="group1"/> 
         </menu> 
         <action
            id="com.xyz.runXYZ" 
            label="&amp;Run XYZ Tool" 
            menubarPath="com.xyz.xyzMenu/group1" 
            toolbarPath="Normal/additions"
            style="toggle"
            state="true" 
            icon="icons/runXYZ.png"
            tooltip="Run XYZ Tool" 
            helpContextId="com.xyz.run_action_context" 
            class="com.xyz.actions.RunXYZ"> 
            <selection class="org.eclipse.core.resources.IFile" name="*.java"/> 
         </action> 
     </viewContribution> 
   </extension> 

In the example above, the specified action will only enable for a single selection (enablesFor attribute). In addition, the object in the selection must be a Java file resource.

The following is an other example of a view action extension:


   <extension point="org.eclipse.ui.viewActions"> 
      <viewContribution 
         id="com.xyz.xyzViewC1" 
         targetID="org.eclipse.ui.views.navigator.ResourceNavigator"> 
         <menu
            id="com.xyz.xyzMenu" 
            label="XYZ Menu" 
            path="additions"> 
            <separator name="group1"/> 
         </menu> 
         <action 
            id="com.xyz.runXYZ2" 
            label="&amp;Run XYZ2 Tool" 
            menubarPath="com.xyz.xyzMenu/group1"
            style="push"
            icon="icons/runXYZ2.png"
            tooltip="Run XYZ2 Tool" 
            helpContextId="com.xyz.run_action_context2" 
            class="com.xyz.actions.RunXYZ2"> 
            <enablement>
               <and>
                  <objectClass name="org.eclipse.core.resources.IFile"/>
                  <not>
                     <objectState name="extension" value="java"/>
                  </not>
               </and>
            </enablement>
         </action> 
      </viewContribution> 
   </extension> 

In the example above, the specified action will appear as a menu item. The action is enabled if the selection contains no Java file resources.

API Information:
The value of the class attribute must be a fully qualified name of a Java class that implements org.eclipse.ui.IViewActionDelegate. This class is loaded as late as possible to avoid loading the entire plug-in before it is really needed.

The interface org.eclipse.ui.IViewActionDelegate extends org.eclipse.ui.IActionDelegate and adds an additional method that allows the delegate to initialize with the view instance it is contributing into.

This extension point can be used to contribute actions into menus previously created by the target view. Omitting the menu path attribute will result in adding the new menu or action at the end of the pulldown menu.

The enablement criteria for an action extension is initially defined by enablesFor, and also either selection or enablement. However, once the action delegate has been instantiated, it may control the action enable state directly within its selectionChanged method.

Action and menu labels may contain special characters that encode mnemonics using the following rules:

  1. Mnemonics are specified using the ampersand ('&') character in front of a selected character in the translated text. Since ampersand is not allowed in XML strings, use &amp; character entity.
If two or more actions are contributed to a menu or toolbar by a single extension the actions will appear in the reverse order of how they are listed in the plugin.xml file. This behavior is admittedly unintuitive. However, it was discovered after the Eclipse Platform API was frozen. Changing the behavior now would break every plug-in which relies upon the existing behavior.

The selection and enablement elements are mutually exclusive. The enablement element can replace the selection element using the sub-elements objectClass and objectState. For example, the following:


 <selection
  class="org.eclipse.core.resources.IFile"
  name="*.java">
 </selection>
can be expressed using:

 <enablement>
  <and>
   <objectClass name="org.eclipse.core.resources.IFile"/>
   <objectState name="extension" value="java"/>
  </and>
 </enablement>

Supplied Implementation:
Each view normally comes with a number of standard items on the pulldown menu and local toolbar. Additions from other plug-ins will be appended to the standard complement.


Copyright (c) 2002, 2011 IBM Corporation and others.
All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html