Adding a new Column

This is an example of a script add-in that adds a new information column to Opus.

This column, Is Modified?, indicates whether a file has been modified since it was created. This is performed by simply comparing whether the item's creation and modification dates are the same.

• For files that have been modified, the column displays Yes, and for files that haven't been modified it displays No. Nothing is displayed for folders.

• When sorting by this column, modified files are displayed above non-modified files.

• When grouping by this column, the two groups are labeled Modified and Never Modified.

The basic procedure to add a custom column from a script add-in is:

• Either:

  • In the OnInit event, create a **ScriptColumn**object with the ScriptInitData.AddColumn method.

  • Or, in the OnAddColumns event, create a **ScriptColumn**object with the AddColData.AddColumn method.

• Initialize the properties of the **ScriptColumn****object. At a minimum you must populate the name and method properties. * Create a separate function in your script-add in, with the method name you specified for the column. This method will be called when Opus wants to retrieve data for your column.

  // Set the script type to JScript to use this script // The OnInit function is called by Directory Opus to initialize the script add-in function OnInit(initData) { // Provide basic information about the script by initializing the properties of the ScriptInitData object initData.name = "Is Modified Column"; initData.desc = "Adds a column that indicates if a file has ever been modified."; initData.copyright = "(c) 2014 Jonathan Potter"; initData.default_enable = true; // Create a new ScriptColumn object and initialize it to add the column to Opus var cmd = initData.AddColumn(); cmd.name = "IsModified"; cmd.method = "OnIsModified"; cmd.label = "Is Modified?"; cmd.autogroup = false; // we provide our own grouping information cmd.autorefresh = true; // refresh column when files change cmd.justify = "center"; cmd.match.push_back("Yes"); // when searching, these are the only two options cmd.match.push_back("No"); }

  // Implement the IsModified column (this entry point is an OnScriptColumn event). // The name of this function must correspond to the value specified for the **method **property when the column was added in OnInit function OnIsModified(scriptColData) { // scriptColData is a ScriptColumnData object. // First check that this is the right column (it should be since we only added one). if (scriptColData.col != "IsModified") return; // We don't provide a value for folders since their timestamps don't mean much. // We set the sort key to 3 so they come last (in case the user is mixing files and folders). if (scriptColData.item.is_dir) { scriptColData.value = ""; scriptColData.sort = 3; } // For files, are the two dates the same? else if (new Date(scriptColData.item.create).valueOf() == new Date(scriptColData.item.modify).valueOf()) { scriptColData.value = "No"; scriptColData.group = "Never Modified"; scriptColData.sort = 2; } // the dates are different, therefore modified else { scriptColData.value = "Yes"; scriptColData.group = "Modified"; scriptColData.sort = 1; } }