Wanikani Open Framework - Progress module

Progress module for Wanikani Open Framework
当前为 2018-02-17 提交的版本，查看最新版本。
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.gf.qytechs.cn/scripts/38577/252061/Wanikani%20Open%20Framework%20-%20Progress%20module.js
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// ==UserScript==
// @name        Wanikani Open Framework - Progress module
// @namespace   rfindley
// @description Progress module for Wanikani Open Framework
// @version     1.0.0
// @copyright   2018+, Robin Findley
// @license     MIT; http://opensource.org/licenses/MIT
// ==/UserScript==
 
(function(global) {
 
	//########################################################################
	//------------------------------
	// Published interface
	//------------------------------
	global.wkof.Progress = {
		update: update_progress
	}
	//########################################################################
 
	var popup_delay = 1000; // Delay before popup will open (in milliseconds).
	var popup_delay_started = false, popup_delay_expired = false;
	var externals_requested = false, externals_loaded = false;
	var progress_bars = {};
	var user_closed = false;
	var dialog_visible = false, dialog;
 
	//------------------------------
	// Update the progress bar.
	//------------------------------
	function update_progress(data) {
		if (data) update_data(data);
 
		if (!dialog_visible && !have_pending()) shutdown();
 
		// We have something pending, but don't show dialog until popup_delay has passed.
		if (!popup_delay_started) return start_popup_delay();
 
		// Popup delay has passed.  Show progress.
		if (!popup_delay_expired) return;
		update_dialog();
	}
 
	//------------------------------
	// Update our stored progress bar status
	//------------------------------
	function update_data(data) {
		var bar = progress_bars[data.name];
		if (!bar) progress_bars[data.name] = bar = {label: data.label};
		bar.is_updated = true;
		bar.value = data.value;
		bar.max = data.max;
		if (bar.max === 0) {
			bar.value = 1;
			bar.max = 1;
		}
		// Don't retain items that complete before the dialog pops up.
		if (!popup_delay_expired && (bar.value >= bar.max))
			delete progress_bars[data.name];
	}
 
	//------------------------------
	// Check if some progress is still pending.
	//------------------------------
	function have_pending() {
		var all_done = true;
		for (name in progress_bars) {
			var progress_bar = progress_bars[name];
			if (progress_bar.value < progress_bar.max) all_done = false;
		}
		return !all_done;
	}
 
	//------------------------------
	// Delay the dialog from popping up until progress takes at least N milliseconds.
	//------------------------------
	function start_popup_delay() {
		popup_delay_started = true;
		popup_timer = setTimeout(function(){
			popup_delay_expired = true;
			update_progress();
		}, popup_delay);
	}
 
	//------------------------------
	// Update the contents of the progress dialog (if it's currently visible)
	//------------------------------
	function update_dialog() {
		if (!externals_requested) {
			externals_requested = true;
			load_externals()
			.then(function(){
				externals_loaded = true;
				update_progress();
			});
			return;
		}
		if (!externals_loaded) return;
 
		if (!dialog_visible) {
			dialog_visible = true;
			if ($('#wkof_ds').length === 0) $('body').prepend('<div id="wkof_ds"></div>');
 
			dialog = $('<div id="wkof_progbar_dlg" class="wkofs_progress_dlg" style="display:none;"></div>');
 
			dialog.dialog({
				title: 'Loading Data...',
				minHeight: 20,
				maxHeight: window.innerHeight,
				height: 'auto',
				modal: false,
				resizable: false,
				autoOpen: false,
				appendTo: '#wkof_ds',
				close: dialog_close
			});
			dialog.dialog('open');
		}
 
		var all_done = true;
		for (name in progress_bars) {
			var progress_bar = progress_bars[name];
			if (progress_bar.value < progress_bar.max) all_done = false;
			var bar = $('#wkof_progbar_dlg .wkof_progbar_wrap[name="'+name+'"]');
			if (bar.length === 0) {
				bar = $('<div class="wkof_progbar_wrap" name="'+name+'"><label>'+progress_bar.label+'</label><div class="wkof_progbar"></div></div>');
				var bars = $('#wkof_progbar_dlg .wkof_progbar_wrap');
				bars.push(bar[0]);
				$('#wkof_progbar_dlg').append(bars.sort(bar_label_compare));
			}
			if (progress_bar.is_updated) {
				progress_bar.is_updated = false;
				bar.find('.wkof_progbar').progressbar({value: progress_bar.value, max: progress_bar.max});
			}
		}
 
		if (all_done) shutdown();
	}
 
	function dialog_close() {
		dialog.dialog('destroy');
	}
 
	//------------------------------
	// Load external support files (jquery UI and stylesheet)
	//------------------------------
	function load_externals() {
		if (location.hostname.match(/^(www\.)?wanikani\.com$/) !== null)
			css_url = 'https://raw.githubusercontent.com/rfindley/wanikani-open-framework/master/jqui-wkmain.css';
 
		return Promise.all([
			wkof.load_script('https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js', true /* cache */),
			wkof.load_css(css_url, true /* cache */)
		]);
	}
 
	//------------------------------
	// Comparison function for sorting progress bars.
	//------------------------------
	function bar_label_compare(a, b){
		var a = $(a).find('label').text();
		var b = $(b).find('label').text();
		return a.localeCompare(b);
	}
 
	//------------------------------
	// Shut down the dialog box and cancel the popup delay timer.
	//------------------------------
	function shutdown() {
		// Reset all flags
		user_closed = false;
 
		// If popup timer was pending, cancel it.
		if (popup_delay_started && !popup_delay_expired) clearTimeout(popup_timer);
		popup_delay_started = false;
		popup_delay_expired = false;
 
		// If progress dialog is open, close it.
		if (dialog_visible) {
			dialog.dialog('close');
			dialog_visible = false;
		}
		progress_bars = {};
	}
 
	function set_ready_state(){
		// Delay guarantees include() callbacks are called before ready() callbacks.
		setTimeout(function(){wkof.set_state('wkof.Progress', 'ready');},0);
	}
	set_ready_state();
 
})(window);
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