251 lines
8.1 KiB
JavaScript
251 lines
8.1 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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const Clutter = imports.gi.Clutter;
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const GLib = imports.gi.GLib;
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const St = imports.gi.St;
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const Main = imports.ui.main;
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const Tweener = imports.ui.tweener;
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const SCROLL_TIME = 0.1;
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// http://daringfireball.net/2010/07/improved_regex_for_matching_urls
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const _balancedParens = '\\((?:[^\\s()<>]+|(?:\\(?:[^\\s()<>]+\\)))*\\)';
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const _leadingJunk = '[\\s`(\\[{\'\\"<\u00AB\u201C\u2018]';
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const _notTrailingJunk = '[^\\s`!()\\[\\]{};:\'\\".,<>?\u00AB\u00BB\u201C\u201D\u2018\u2019]';
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const _urlRegexp = new RegExp(
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'(^|' + _leadingJunk + ')' +
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'(' +
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'(?:' +
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'(?:http|https|ftp)://' + // scheme://
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'|' +
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'www\\d{0,3}[.]' + // www.
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'|' +
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'[a-z0-9.\\-]+[.][a-z]{2,4}/' + // foo.xx/
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')' +
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'(?:' + // one or more:
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'[^\\s()<>]+' + // run of non-space non-()
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'|' + // or
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_balancedParens + // balanced parens
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')+' +
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'(?:' + // end with:
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_balancedParens + // balanced parens
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'|' + // or
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_notTrailingJunk + // last non-junk char
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')' +
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')', 'gi');
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// findUrls:
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// @str: string to find URLs in
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//
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// Searches @str for URLs and returns an array of objects with %url
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// properties showing the matched URL string, and %pos properties indicating
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// the position within @str where the URL was found.
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//
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// Return value: the list of match objects, as described above
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function findUrls(str) {
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let res = [], match;
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while ((match = _urlRegexp.exec(str)))
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res.push({ url: match[2], pos: match.index + match[1].length });
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return res;
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}
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// spawn:
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// @argv: an argv array
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//
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// Runs @argv in the background, handling any errors that occur
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// when trying to start the program.
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function spawn(argv) {
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try {
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trySpawn(argv);
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} catch (err) {
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_handleSpawnError(argv[0], err);
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}
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}
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// spawnCommandLine:
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// @command_line: a command line
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//
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// Runs @command_line in the background, handling any errors that
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// occur when trying to parse or start the program.
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function spawnCommandLine(command_line) {
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try {
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let [success, argv] = GLib.shell_parse_argv(command_line);
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trySpawn(argv);
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} catch (err) {
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_handleSpawnError(command_line, err);
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}
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}
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// trySpawn:
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// @argv: an argv array
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//
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// Runs @argv in the background. If launching @argv fails,
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// this will throw an error.
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function trySpawn(argv)
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{
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var success, pid;
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try {
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[success, pid] = GLib.spawn_async(null, argv, null,
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GLib.SpawnFlags.SEARCH_PATH | GLib.SpawnFlags.DO_NOT_REAP_CHILD,
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null);
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} catch (err) {
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/* Rewrite the error in case of ENOENT */
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if (err.matches(GLib.SpawnError, GLib.SpawnError.NOENT)) {
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throw new GLib.SpawnError({ code: GLib.SpawnError.NOENT,
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message: _("Command not found") });
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} else if (err instanceof GLib.Error) {
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// The exception from gjs contains an error string like:
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// Error invoking GLib.spawn_command_line_async: Failed to
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// execute child process "foo" (No such file or directory)
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// We are only interested in the part in the parentheses. (And
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// we can't pattern match the text, since it gets localized.)
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let message = err.message.replace(/.*\((.+)\)/, '$1');
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throw new (err.constructor)({ code: err.code,
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message: message });
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} else {
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throw err;
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}
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}
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// Dummy child watch; we don't want to double-fork internally
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// because then we lose the parent-child relationship, which
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// can break polkit. See https://bugzilla.redhat.com//show_bug.cgi?id=819275
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GLib.child_watch_add(GLib.PRIORITY_DEFAULT, pid, function () {}, null);
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}
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// trySpawnCommandLine:
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// @command_line: a command line
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//
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// Runs @command_line in the background. If launching @command_line
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// fails, this will throw an error.
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function trySpawnCommandLine(command_line) {
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let success, argv;
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try {
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[success, argv] = GLib.shell_parse_argv(command_line);
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} catch (err) {
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// Replace "Error invoking GLib.shell_parse_argv: " with
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// something nicer
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err.message = err.message.replace(/[^:]*: /, _("Could not parse command:") + "\n");
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throw err;
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}
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trySpawn(argv);
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}
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function _handleSpawnError(command, err) {
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let title = _("Execution of '%s' failed:").format(command);
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Main.notifyError(title, err.message);
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}
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// lowerBound:
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// @array: an array or array-like object, already sorted
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// according to @cmp
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// @val: the value to add
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// @cmp: a comparator (or undefined to compare as numbers)
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//
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// Returns the position of the first element that is not
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// lower than @val, according to @cmp.
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// That is, returns the first position at which it
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// is possible to insert @val without violating the
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// order.
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// This is quite like an ordinary binary search, except
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// that it doesn't stop at first element comparing equal.
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function lowerBound(array, val, cmp) {
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let min, max, mid, v;
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cmp = cmp || function(a, b) { return a - b; };
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if (array.length == 0)
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return 0;
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min = 0; max = array.length;
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while (min < (max - 1)) {
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mid = Math.floor((min + max) / 2);
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v = cmp(array[mid], val);
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if (v < 0)
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min = mid + 1;
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else
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max = mid;
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}
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return (min == max || cmp(array[min], val) < 0) ? max : min;
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}
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// insertSorted:
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// @array: an array sorted according to @cmp
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// @val: a value to insert
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// @cmp: the sorting function
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//
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// Inserts @val into @array, preserving the
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// sorting invariants.
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// Returns the position at which it was inserted
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function insertSorted(array, val, cmp) {
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let pos = lowerBound(array, val, cmp);
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array.splice(pos, 0, val);
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return pos;
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}
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function makeCloseButton() {
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let closeButton = new St.Button({ style_class: 'notification-close'});
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// This is a bit tricky. St.Bin has its own x-align/y-align properties
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// that compete with Clutter's properties. This should be fixed for
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// Clutter 2.0. Since St.Bin doesn't define its own setters, the
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// setters are a workaround to get Clutter's version.
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closeButton.set_x_align(Clutter.ActorAlign.END);
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closeButton.set_y_align(Clutter.ActorAlign.START);
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// XXX Clutter 2.0 workaround: ClutterBinLayout needs expand
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// to respect the alignments.
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closeButton.set_x_expand(true);
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closeButton.set_y_expand(true);
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closeButton.connect('style-changed', function() {
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let themeNode = closeButton.get_theme_node();
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closeButton.translation_x = themeNode.get_length('-shell-close-overlap-x');
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closeButton.translation_y = themeNode.get_length('-shell-close-overlap-y');
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});
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return closeButton;
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}
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function ensureActorVisibleInScrollView(scrollView, actor) {
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let adjustment = scrollView.vscroll.adjustment;
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let [value, lower, upper, stepIncrement, pageIncrement, pageSize] = adjustment.get_values();
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let offset = 0;
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let vfade = scrollView.get_effect("fade");
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if (vfade)
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offset = vfade.vfade_offset;
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let box = actor.get_allocation_box();
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let y1 = box.y1, y2 = box.y2;
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let parent = actor.get_parent();
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while (parent != scrollView) {
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if (!parent)
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throw new Error("actor not in scroll view");
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let box = parent.get_allocation_box();
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y1 += box.y1;
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y2 += box.y1;
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parent = parent.get_parent();
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}
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if (y1 < value + offset)
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value = Math.max(0, y1 - offset);
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else if (y2 > value + pageSize - offset)
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value = Math.min(upper, y2 + offset - pageSize);
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else
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return;
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Tweener.addTween(adjustment,
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{ value: value,
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time: SCROLL_TIME,
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transition: 'easeOutQuad' });
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}
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