// 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) {
	initData.name = "Confirm Multi-open";
	initData.desc = "Ask for confirmation if more than X selected files are attempted to be opened at once.";
	initData.copyright = "by jsys in 2014";
	initData.version = "1.0.0";
	initData.default_enable = true;

	initData.Config["threshold"] = 20; // default
}

// Called when a file or folder is double-clicked
function OnDoubleClick(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)."
	if (doubleClickData.cont == undefined) return legacy_handleDoubleClick(doubleClickData);
	else return handleOnDoubleClick(doubleClickData);
}


// **************************
// * User-defined functions *
// **************************

function askConfirmation(doubleClickData, selfiles) {
	dlg = doubleClickData.tab.Dlg;
	dlg.title =  "Opening Multiple Files";
	dlg.message = selfiles + " files are about to be opened.";
	dlg.buttons = "Proceed|Cancel";
	dlg.icon = "warn"
	return dlg.Show();
}

function handleOnDoubleClick(doubleClickData) { // elegant version for Dopus version above 11.5.6 beta
	doubleClickData.cont = false;
	var selfiles = doubleClickData.Tab.selstats.selfiles;

	if (selfiles > Script.Config["threshold"] && askConfirmation(doubleClickData, selfiles) == 0) return true; // 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."
	else return false;
}

// LEGACY //
function legacy_handleDoubleClick(doubleClickData) { // fallback version for Dopus version 11.5.6 beta or below
	if (doubleClickData.Tab.selstats.selfiles < 1) return false; // prevent "subscript out of range" log spam by below line on regular file browsing (this causes threshold of 0 being ignored in this version)
	if (String(doubleClickData.item.realpath) == String(doubleClickData.Tab.selected_files(0).realpath)) {
		var selfiles = doubleClickData.Tab.selstats.selfiles;
		Script.vars.Set("allowed", 1);

		if (selfiles > Script.Config["threshold"]) {
			if (askConfirmation(doubleClickData, selfiles) == 0) { // 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."
				Script.vars.Set("allowed", 0);
				return true;
			}
		}
	}

	if (Script.vars.Get("allowed") == 0) return true;
	else return false;
}