Context menu

The plugin can be accessed via the context menu.

Creating a context menu item

1. Subscibe to the onContextMenuShow event which is called when the context menu has been shown.

   If a plugin is listening for this event, it must call the AddContextMenuItem method (synchronously or not), because the editor waits for responses from all plugins before filling the context menu.

   Parameters:

   Name	Type	Description
   options	ContextMenuOptions	Defines the information of the selected context menu item.

   Example:

   Asc.plugin.attachEvent("onContextMenuShow", (options) => {
     const items = {
       guid: window.Asc.plugin.guid,
       items: [
         {
           id: "onNameClick",
           text: "Name",
           items: [],
         },
       ],
     };
   
     window.Asc.plugin.executeMethod("AddContextMenuItem", [items]);
   });

   ContextMenuOptions

   Defines the context menu options.

   Type: object

   Properties:

   Name	Type	Description
   Type	ContextMenuType	The context menu type.
   header	boolean	Specifies whether the context menu is opened inside the header.
   footer	boolean	Specifies whether the context menu is opened inside the footer.
   headerArea	boolean	Specifies whether the context menu is opened over the header.
   footerArea	boolean	Specifies whether the context menu is opened over the footer.

   ContextMenuType

   The context menu type:

   • None - not used,
   • Target - nothing is selected,
   • Selection - text is selected,
   • Image - image is selected,
   • Shape - shape is selected,
   • OleObject - OLE object is selected.

   Depending on the selection type, different context menu items can be added.

   Type: "None" | "Target" | "Selection" | "Image" | "Shape" | "OleObject"

2. Specify the AddContextMenuItem method to add a button to the context menu if necessary.

   Parameters:

   Name	Type	Description
   items	Array.<ContextMenuItem>	An array containing the context menu items.

   Returns: This method doesn't return any data.

   ContextMenuItem

   The context menu item.

   Type: object

   Properties:

   Name	Type	Description
   id	string	The item ID.
   text	string	The item caption.
   data	string	The item data (this data will be sent to the click event callback).
   disabled	boolean	Specifies whether the current item is disabled or not.
   icons	string	The item icons (see the plugins config documentation).
   items	Array.<ContextMenuItem>	An array containing the context menu items for the current item.

   Example:

   Asc.plugin.attachEvent("onContextMenuShow", (options) => {
     const items = {
       guid: window.Asc.plugin.guid,
       items: [
         {
           id: "onNameClick",
           text: "Name",
           items: [],
         },
       ],
     };
   
     window.Asc.plugin.executeMethod("AddContextMenuItem", [items]);
   });

Updating a context menu item

To update the context menu item, specify the UpdateContextMenuItem method.

Parameters:

Name	Type	Description
items	Array.<ContextMenuItem>	An array containing the context menu items for the current item.

Returns: This method doesn't return any data.

Example:

Asc.plugin.attachEvent("onContextMenuShow", (options) => {
  const items = {
    guid: window.Asc.plugin.guid,
    items: [
      {
        id: "onNameClick",
        text: "New name",
        items: [],
      },
    ],
  };

  window.Asc.plugin.executeMethod("UpdateContextMenuItem", [items]);
});

Clicking a context menu item

1. Subscibe to the onContextMenuClick event which is called when the context menu button has been clicked.

   Parameters:

   Name	Type	Description
   id	string	The item ID.

   Example:

   window.Asc.plugin.event_onContextMenuClick = (id) => {
     const pluginObj = window.Asc.plugin;
     const itemId = id;
     const itemData = undefined;
     const itemPos = itemId.indexOf("_oo_sep_");
     if (itemPos !== -1) {
       const itemData = itemId.slice(itemPos + 8);
       const itemId = itemId.slice(0, itemPos);
     }
   
     if (pluginObj.contextMenuEvents && pluginObj.contextMenuEvents[itemId]) {
       pluginObj.contextMenuEvents[itemId].call(pluginObj, itemData);
     }
   };

2. Specify the attachContextMenuClickEvent to add an event listener, a function that will be called whenever the specified button is clicked in the context menu and triggers an event. For each context menu button, you can specify a separate event listener by its ID.

   Parameters:

   Name	Type	Description
   id	string	The event name.
   action	function	The event listener.

   Returns: This method doesn't return any data.

   Example:

   Asc.plugin.attachContextMenuClickEvent("onNameClick", (data) => {
     console.log(data);
   });

For example, you can create your own spellchecker. In this case, the context menu items with words will have the same ID and the same event listener. And the necessary word will be defined with the data from the attachContextMenuClickEvent method.