// Confirm multi-open
//
//
// This is a script for Directory Opus.
// See http://www.gpsoft.com.au/DScripts/redirect.asp?page=scripts for development information.


// Called by Directory Opus to initialize the script
function OnInit(initData) {
	//uid added via script wizard (do not change after publishing this script)
	var uid = "39CAC04A-02E9-4DFA-9F8D-6B19609A13F3";
	//resource center url added via script wizard (required for updating)
	var url = "http://resource.dopus.com/viewtopic.php?f=35&t=22872";

	// ConfirmMultiopen stuff
	initData.name = "Confirm multi-open";
	initData.desc = "Ask before opening more than X selected items by keyboard Enter key.";
	initData.copyright = "by jsys in 2014-2015";
	initData.version = "1.1";
	initData.default_enable = true;
	initData.min_version = "11.10.2";

	// settings & defaults
	initData.config_desc = DOpus.Create.Map();
	var option_name = "";

	option_name = "Excluded extensions";
	initData.Config[option_name] = initData.Config[option_name] = DOpus.NewVector(".mp3 (example)", ".flac (example)", "_comic_page.jpg (example)");
	initData.config_desc(option_name) = "Selected items with these extensions (name endings) will not count toward the threshold limit. No wildcards or regex.";

	option_name = "Focus button";
	initData.Config[option_name] = DOpus.NewVector(0, "Proceed", "Cancel");
	initData.config_desc(option_name) = "A button on the multi-open confirmation dialog to have initial keyboard focus.";

	option_name = "Threshold";
	initData.Config[option_name] = 20;
	initData.config_desc(option_name) = "Multi-open confirmation dialog is triggered on attempt to open more than this amount of items.";
}

// Called when a file or folder is double-clicked
function OnDoubleClick(doubleClickData) {
	if (doubleClickData.mouse != "none") { // ensure we react only when *not* triggered by mouse (such as middle double-click)
		doubleClickData.call = false;
		return false;
	}

	return handleOnDoubleClick(doubleClickData); // from docs: "If you return True, the double-click will be cancelled and the file will not be opened. If you return False the double-click will be allowed to continue (this is the default)."
}


// ********************
// * Custom functions *
// ********************

String.prototype.endsWith = function(suffix) { // http://stackoverflow.com/a/2548133
	return this.indexOf(suffix, this.length - suffix.length) !== -1;
}

function getExcludedItemsCount(selected) {
	var count = 0;
	var enum_selected_items = new Enumerator(selected);

	for (; !enum_selected_items.atEnd(); enum_selected_items.moveNext()) {
		var selected_item = enum_selected_items.item();
		var enum_excluded_extension = new Enumerator(Script.Config["Excluded extensions"]);

		for (; !enum_excluded_extension.atEnd(); enum_excluded_extension.moveNext()) {
			var excluded_extension = enum_excluded_extension.item();
	    	if (String(selected_item).endsWith(excluded_extension)) {
	    		count ++;
	    		break;
	    	}
	    }

	}

	return count;
}

function handleOnDoubleClick(doubleClickData) {
	if ((doubleClickData.Tab.selstats.selitems - getExcludedItemsCount(doubleClickData.Tab.selected)) > Script.Config["Threshold"] && askConfirmation(doubleClickData.tab) == 0) {
		doubleClickData.cont = false; // Tells Dopus to stop processing remaining selected files
		return true; // Cancel current (first) file (i.e., tells Dopus that *we* have handled this file and it doesn't have to do anything else with it)
	}
	else {
		doubleClickData.call = false; // Tells Dopus to continue without calling this script for remaining selected files
		return false; // Dopus proceeds to handle (current and) remaining selected files
	}
}

function askConfirmation(Tab) {
	var dlg = Tab.Dlg;

	dlg.title =  "Opening Multiple Items";
	dlg.icon = "information";
	dlg.message = Tab.selstats.selitems + " selected items are to be opened.";

	dlg.buttons = "Proceed|Cancel";
	dlg.defid = Script.Config["Focus button"] == 0;

	return dlg.Show(); // from docs: "If a dialog has more than one button then by definition the last (right-most) button is the "cancel" button and so this will return index 0."
}


///////////////////////////////////////////////////////////////////////////////
function OnAboutScript(data){ //v0.1
	var cmd = DOpus.Create.Command();
	if (!cmd.Commandlist('s').exists("ScriptWizard")){
		if (DOpus.Dlg.Request("The 'ScriptWizard' add-in has not been found.\n\n"+
			"Install 'ScriptWizard' from [resource.dopus.com].\nThe add-in enables this dialog and also offers "+
			"easy updating of scripts and many more.","Yes, take me there!|Cancel", "No About.. ", data.window))
			cmd.RunCommand('http://resource.dopus.com/viewtopic.php?f=35&t=23179');}
		else
			cmd.RunCommand('ScriptWizard ABOUT WIN='+data.window+' FILE="'+Script.File+'"');
	}
//MD5 = "6383b0e2f7201fa9a7f741c7db86de17"; DATE = "2015.06.23 - 19:12:11"