Stackedit/js/core.js
2013-08-06 01:28:21 +01:00

630 lines
24 KiB
JavaScript

define([
"jquery",
"underscore",
"utils",
"settings",
"eventMgr",
"mousetrap",
"text!html/bodyIndex.html",
"text!html/bodyViewer.html",
"text!html/settingsTemplateTooltip.html",
"text!html/settingsUserCustomExtensionTooltip.html",
"storage",
"config",
"libs/layout",
"libs/Markdown.Editor"
], function($, _, utils, settings, eventMgr, mousetrap, bodyIndexHTML, bodyViewerHTML, settingsTemplateTooltipHTML, settingsUserCustomExtensionTooltipHTML) {
var core = {};
// Used for periodic tasks
var intervalId = undefined;
// Used to detect user activity
var isUserReal = false;
var userActive = false;
var windowUnique = true;
var userLastActivity = 0;
function setUserActive() {
isUserReal = true;
userActive = true;
var currentTime = utils.currentTime;
if(currentTime > userLastActivity + 1000) {
userLastActivity = currentTime;
eventMgr.onUserActive();
}
}
function isUserActive() {
if(userActive === true && utils.currentTime - userLastActivity > USER_IDLE_THRESHOLD) {
userActive = false;
}
return userActive && windowUnique;
}
// Used to only have 1 window of the application in the same browser
var windowId = undefined;
function checkWindowUnique() {
if(isUserReal === false || windowUnique === false) {
return;
}
if(windowId === undefined) {
windowId = utils.randomString();
localStorage["frontWindowId"] = windowId;
}
var frontWindowId = localStorage["frontWindowId"];
if(frontWindowId != windowId) {
windowUnique = false;
if(intervalId !== undefined) {
clearInterval(intervalId);
}
$(".modal").modal("hide");
$('#modal-non-unique').modal({
backdrop: "static",
keyboard: false
});
}
}
// Offline management
var isOffline = false;
var offlineTime = utils.currentTime;
core.setOffline = function() {
offlineTime = utils.currentTime;
if(isOffline === false) {
isOffline = true;
eventMgr.onOfflineChanged(true);
}
};
function setOnline() {
if(isOffline === true) {
isOffline = false;
eventMgr.onOfflineChanged(false);
}
}
function checkOnline() {
// Try to reconnect if we are offline but we have some network
if(isOffline === true && navigator.onLine === true && offlineTime + CHECK_ONLINE_PERIOD < utils.currentTime) {
offlineTime = utils.currentTime;
// Try to download anything to test the connection
$.ajax({
url: "//www.google.com/jsapi",
timeout: AJAX_TIMEOUT,
dataType: "script"
}).done(function() {
setOnline();
});
}
}
// Load settings in settings dialog
function loadSettings() {
// Layout orientation
utils.setInputRadio("radio-layout-orientation", settings.layoutOrientation);
// Theme
utils.setInputValue("#input-settings-theme", localStorage.theme);
// Lazy rendering
utils.setInputChecked("#input-settings-lazy-rendering", settings.lazyRendering);
// Editor font family
utils.setInputValue("#input-settings-editor-font-family", settings.editorFontFamily);
// Editor font size
utils.setInputValue("#input-settings-editor-font-size", settings.editorFontSize);
// Default content
utils.setInputValue("#textarea-settings-default-content", settings.defaultContent);
// Commit message
utils.setInputValue("#input-settings-publish-commit-msg", settings.commitMsg);
// Template
utils.setInputValue("#textarea-settings-publish-template", settings.template);
// SSH proxy
utils.setInputValue("#input-settings-ssh-proxy", settings.sshProxy);
// Load extension settings
eventMgr.onLoadSettings();
}
// Save settings from settings dialog
function saveSettings(event) {
var newSettings = {};
// Layout orientation
newSettings.layoutOrientation = utils.getInputRadio("radio-layout-orientation");
// Theme
var theme = utils.getInputValue("#input-settings-theme");
// Lazy Rendering
newSettings.lazyRendering = utils.getInputChecked("#input-settings-lazy-rendering");
// Editor font family
newSettings.editorFontFamily = utils.getInputTextValue("#input-settings-editor-font-family", event);
// Editor font size
newSettings.editorFontSize = utils.getInputIntValue("#input-settings-editor-font-size", event, 1, 99);
// Default content
newSettings.defaultContent = utils.getInputValue("#textarea-settings-default-content");
// Commit message
newSettings.commitMsg = utils.getInputTextValue("#input-settings-publish-commit-msg", event);
// Template
newSettings.template = utils.getInputTextValue("#textarea-settings-publish-template", event);
// SSH proxy
newSettings.sshProxy = utils.checkUrl(utils.getInputTextValue("#input-settings-ssh-proxy", event), true);
// Save extension settings
newSettings.extensionSettings = {};
eventMgr.onSaveSettings(newSettings.extensionSettings, event);
if(!event.isPropagationStopped()) {
$.extend(settings, newSettings);
localStorage.settings = JSON.stringify(settings);
localStorage.theme = theme;
}
}
// Create the layout
var layout = undefined;
function createLayout() {
if(viewerMode === true) {
return;
}
var layoutGlobalConfig = {
closable: true,
resizable: false,
slidable: false,
livePaneResizing: true,
enableCursorHotkey: false,
spacing_open: 15,
spacing_closed: 15,
togglerLength_open: 90,
togglerLength_closed: 90,
stateManagement__enabled: false,
center__minWidth: 200,
center__minHeight: 200
};
eventMgr.onLayoutConfigure(layoutGlobalConfig);
if(settings.layoutOrientation == "horizontal") {
$(".ui-layout-south").remove();
$(".preview-container").html('<div id="extension-preview-buttons"></div><div id="preview-contents"><div id="wmd-preview" class="preview-content"></div></div>');
layout = $('body').layout($.extend(layoutGlobalConfig, {
east__resizable: true,
east__size: .5,
east__minSize: 200
}));
}
else if(settings.layoutOrientation == "vertical") {
$(".ui-layout-east").remove();
$(".preview-container").html('<div id="extension-preview-buttons"></div><div id="preview-contents"><div id="wmd-preview" class="preview-content"></div></div>');
layout = $('body').layout($.extend(layoutGlobalConfig, {
south__resizable: true,
south__size: .5,
south__minSize: 200
}));
}
$(".navbar").click(function() {
layout.allowOverflow('north');
});
$(".ui-layout-toggler-north").addClass("btn btn-info").append($("<b>").addClass("caret"));
$(".ui-layout-toggler-south").addClass("btn btn-info").append($("<b>").addClass("caret"));
$(".ui-layout-toggler-east").addClass("btn btn-info").append($("<b>").addClass("caret"));
eventMgr.onLayoutCreated(layout);
}
// Create the PageDown editor
var editor = undefined;
var fileDesc = undefined;
var documentContent = undefined;
core.initEditor = function(fileDescParam) {
if(fileDesc !== undefined) {
eventMgr.onFileClosed(fileDesc);
}
fileDesc = fileDescParam;
documentContent = undefined;
var initDocumentContent = fileDesc.content;
var editorElt = $("#wmd-input");
editorElt.val(initDocumentContent);
if(editor !== undefined) {
// If the editor is already created
editor.undoManager.reinit(initDocumentContent, fileDesc.editorStart, fileDesc.editorEnd, fileDesc.editorScrollTop);
eventMgr.onFileOpen(fileDesc);
editor.refreshPreview();
return;
}
var previewContainerElt = $(".preview-container");
// Store editor scrollTop on scroll event
editorElt.scroll(function() {
if(documentContent !== undefined) {
fileDesc.editorScrollTop = $(this).scrollTop();
}
});
// Store editor selection on change
editorElt.bind("keyup mouseup", function() {
if(documentContent !== undefined) {
fileDesc.editorStart = this.selectionStart;
fileDesc.editorEnd = this.selectionEnd;
}
});
// Store preview scrollTop on scroll event
previewContainerElt.scroll(function() {
if(documentContent !== undefined) {
fileDesc.previewScrollTop = $(this).scrollTop();
}
});
// Create the converter and the editor
var converter = new Markdown.Converter();
// Create MD sections for extensions
converter.hooks.chain("preConversion", function(text) {
eventMgr.previewStartTime = new Date();
var tmpText = text + "\n\n";
var sectionList = [], offset = 0;
// Look for titles (excluding gfm blocs)
tmpText.replace(/^```.*\n[\s\S]*?\n```|(^.+[ \t]*\n=+[ \t]*\n+|^.+[ \t]*\n-+[ \t]*\n+|^\#{1,6}[ \t]*.+?[ \t]*\#*\n+)/gm, function(match, title, matchOffset) {
if(title) {
// We just found a title which means end of the previous
// section
// Exclude last \n of the section
sectionList.push(tmpText.substring(offset, matchOffset));
offset = matchOffset;
}
return "";
});
// Last section
sectionList.push(tmpText.substring(offset, text.length));
eventMgr.onSectionsCreated(sectionList);
return text;
});
editor = new Markdown.Editor(converter);
// Custom insert link dialog
editor.hooks.set("insertLinkDialog", function(callback) {
core.insertLinkCallback = callback;
utils.resetModalInputs();
$("#modal-insert-link").modal();
return true;
});
// Custom insert image dialog
editor.hooks.set("insertImageDialog", function(callback) {
core.insertLinkCallback = callback;
if(core.catchModal) {
return true;
}
utils.resetModalInputs();
$("#modal-insert-image").modal();
return true;
});
function checkDocumentChanges() {
var newDocumentContent = editorElt.val();
if(documentContent !== undefined && documentContent != newDocumentContent) {
fileDesc.content = newDocumentContent;
eventMgr.onContentChanged(fileDesc);
}
documentContent = newDocumentContent;
}
var previewWrapper;
if(settings.lazyRendering === true) {
previewWrapper = function(makePreview) {
var debouncedMakePreview = _.debounce(makePreview, 500);
return function() {
if(documentContent === undefined) {
makePreview();
editorElt.scrollTop(fileDesc.editorScrollTop);
previewContainerElt.scrollTop(fileDesc.previewScrollTop);
}
else {
debouncedMakePreview();
}
checkDocumentChanges();
};
};
}
else {
previewWrapper = function(makePreview) {
return function() {
makePreview();
if(documentContent === undefined) {
previewContainerElt.scrollTop(fileDesc.previewScrollTop);
}
checkDocumentChanges();
};
};
}
eventMgr.onEditorConfigure(editor);
editor.hooks.chain("onPreviewRefresh", eventMgr.onAsyncPreview);
editor.run(previewWrapper);
editor.undoManager.reinit(initDocumentContent, fileDesc.editorStart, fileDesc.editorEnd, fileDesc.editorScrollTop);
// Hide default buttons
$(".wmd-button-row").addClass("btn-group").find("li:not(.wmd-spacer)").addClass("btn btn-success").css("left", 0).find("span").hide();
// Add customized buttons
$("#wmd-bold-button").append($('<i class="icon-bold">'));
$("#wmd-italic-button").append($('<i class="icon-italic">'));
$("#wmd-link-button").append($('<i class="icon-globe">'));
$("#wmd-quote-button").append($('<i class="icon-indent-right">'));
$("#wmd-code-button").append($('<i class="icon-code">'));
$("#wmd-image-button").append($('<i class="icon-picture">'));
$("#wmd-olist-button").append($('<i class="icon-list-numbered">'));
$("#wmd-ulist-button").append($('<i class="icon-list-bullet">'));
$("#wmd-heading-button").append($('<i class="icon-text-height">'));
$("#wmd-hr-button").append($('<i class="icon-ellipsis">'));
$("#wmd-undo-button").append($('<i class="icon-reply">'));
$("#wmd-redo-button").append($('<i class="icon-forward">'));
eventMgr.onFileOpen(fileDesc);
};
// Used to lock the editor from the user interaction during asynchronous
// tasks
var uiLocked = false;
core.lockUI = function(param) {
uiLocked = param;
$("#wmd-input").prop("disabled", uiLocked);
$(".navbar-inner .btn").toggleClass("blocked", uiLocked);
if(uiLocked) {
$(".lock-ui").removeClass("hide");
}
else {
$(".lock-ui").addClass("hide");
}
};
// Initialize multiple things and then fire eventMgr.onReady
core.onReady = function() {
if(viewerMode === true) {
$('body').html(bodyViewerHTML);
}
else {
$('body').html(bodyIndexHTML);
}
// listen to online/offline events
$(window).on('offline', core.setOffline);
$(window).on('online', setOnline);
if(navigator.onLine === false) {
core.setOffline();
}
// Detect user activity
$(document).mousemove(setUserActive).keypress(setUserActive);
// Avoid dropdown to close when clicking on submenu
$(".dropdown-submenu > a").click(function(e) {
e.stopPropagation();
});
var menuPanelElt = $('.menu-panel');
var isMenuPanelShown = false;
menuPanelElt.on('shown.bs.collapse', function() {
isMenuPanelShown = true;
// Register a click listener when menu panel is open
$(document).on("click.hide-menu-panel", function(e) {
if(!$(e.target).is('.menu-panel [data-toggle=collapse]')) {
// If click outside the panel, close the panel and unregister the listener
menuPanelElt.collapse('hide');
$(document).off("click.hide-menu-panel");
isMenuPanelShown = false;
}
});
});
var documentPanelElt = $('.document-panel');
var isDocumentPanelShown = false;
documentPanelElt.on('shown.bs.collapse', function() {
isDocumentPanelShown = true;
// Register a click listener when document panel is open
$(document).on("click.hide-document-panel", function(e) {
if(!$(e.target).is('.document-panel [data-toggle=collapse]')) {
// If click outside the panel, close the panel and unregister the listener
documentPanelElt.collapse('hide');
$(document).off("click.hide-document-panel");
isDocumentPanelShown = false;
}
});
});
var isModalShown = false;
$('.modal').on('shown.bs.modal', function() {
// Focus on the first input when modal opens
isModalShown = true;
_.defer(function(elt) {
elt.find("input:enabled:visible:first").focus();
}, $(this));
}).on('hidden.bs.modal', function() {
// Focus on the editor when modal is gone
isModalShown = false;
$("#wmd-input").focus();
}).keyup(function(e) {
// Handle enter key in modals
if(e.which == 13 && !$(e.target).is("textarea")) {
$(this).find(".modal-footer a:last").click();
}
});
// Configure Mousetrap
mousetrap.stopCallback = function(e, element, combo) {
return uiLocked || isMenuPanelShown || isDocumentPanelShown || isModalShown || $(element).is("input, select, textarea:not(#wmd-input)");
};
// UI layout
createLayout();
// Editor's textarea
$("#wmd-input, #md-section-helper").css({
// Apply editor font
"font-family": settings.editorFontFamily,
"font-size": settings.editorFontSize + "px",
"line-height": Math.round(settings.editorFontSize * (20 / 14)) + "px"
});
// Handle tab key
$("#wmd-input").keydown(function(e) {
if(e.keyCode === 9) {
var value = $(this).val();
var start = this.selectionStart;
var end = this.selectionEnd;
// IE8 does not support selection attributes
if(start === undefined || end === undefined) {
return;
}
$(this).val(value.substring(0, start) + "\t" + value.substring(end));
this.selectionStart = this.selectionEnd = start + 1;
e.preventDefault();
}
});
// Do periodic tasks
intervalId = window.setInterval(function() {
utils.updateCurrentTime();
checkWindowUnique();
if(isUserActive() === true || viewerMode === true) {
eventMgr.onPeriodicRun();
checkOnline();
}
}, 1000);
eventMgr.onReady();
};
// Other initialization that are not prioritary
eventMgr.addListener("onReady", function() {
// Load theme list
var themeOptions = _.reduce(THEME_LIST, function(themeOptions, name, value) {
return themeOptions + '<option value="' + value + '">' + name + '</option>';
}, "");
$("#input-settings-theme").html(themeOptions);
// Click events on "insert link" and "insert image" dialog buttons
$(".action-insert-link").click(function(e) {
var value = utils.getInputTextValue($("#input-insert-link"), e);
if(value !== undefined) {
core.insertLinkCallback(value);
core.insertLinkCallback = undefined;
}
});
$(".action-insert-image").click(function(e) {
var value = utils.getInputTextValue($("#input-insert-image"), e);
if(value !== undefined) {
core.insertLinkCallback(value);
core.insertLinkCallback = undefined;
}
});
// Hide events on "insert link" and "insert image" dialogs
$("#modal-insert-link, #modal-insert-image").on('hidden.bs.modal', function() {
if(core.insertLinkCallback !== undefined) {
core.insertLinkCallback(null);
core.insertLinkCallback = undefined;
}
});
// Settings loading/saving
$(".action-load-settings").click(function() {
loadSettings();
});
$(".action-apply-settings").click(function(e) {
saveSettings(e);
if(!e.isPropagationStopped()) {
window.location.reload();
}
});
// Import settings
$(".action-import-settings").click(function(e) {
$("#input-file-import-settings").click();
});
$("#input-file-import-settings").change(function(evt) {
var files = (evt.dataTransfer || evt.target).files;
$("#modal-settings").modal("hide");
_.each(files, function(file) {
var reader = new FileReader();
reader.onload = (function(importedFile) {
return function(e) {
var content = e.target.result;
try {
JSON.parse(content);
}
catch(e) {
eventMgr.onError(importedFile.name + " is not a valid JSON file.");
return;
}
localStorage.settings = content;
window.location.reload();
};
})(file);
var blob = file.slice(0, IMPORT_FILE_MAX_CONTENT_SIZE);
reader.readAsText(blob);
});
});
// Export settings
$(".action-export-settings").click(function(e) {
utils.saveAs(JSON.stringify(settings), "StackEdit Settings.json");
});
$(".action-default-settings").click(function() {
localStorage.removeItem("settings");
localStorage.removeItem("theme");
window.location.reload();
});
$(".action-app-reset").click(function() {
localStorage.clear();
window.location.reload();
});
// Reset inputs
$(".action-reset-input").click(function() {
utils.resetModalInputs();
});
// Tooltips
$(".tooltip-lazy-rendering").tooltip({
container: '#modal-settings',
placement: 'right',
trigger: 'hover',
title: 'Disable preview rendering while typing in order to offload CPU. Refresh preview after 500 ms of inactivity.'
});
$(".tooltip-default-content").tooltip({
html: true,
container: '#modal-settings',
placement: 'right',
trigger: 'hover',
title: 'Thanks for supporting StackEdit by adding a backlink in your documents!'
});
$(".tooltip-usercustom-extension").tooltip({
html: true,
container: '#modal-settings',
placement: 'right',
trigger: 'manual',
title: settingsUserCustomExtensionTooltipHTML
}).click(function(e) {
$(this).tooltip('show');
$(document).on("click.tooltip-usercustom-extension", function(e) {
$(".tooltip-usercustom-extension").tooltip('hide');
$(document).off("click.tooltip-usercustom-extension");
});
e.stopPropagation();
});
$(".tooltip-template").tooltip({
html: true,
container: '#modal-settings',
placement: 'right',
trigger: 'manual',
title: settingsTemplateTooltipHTML
}).click(function(e) {
$(this).tooltip('show');
$(document).on("click.tooltip-template", function(e) {
$(".tooltip-template").tooltip('hide');
$(document).off("click.tooltip-template");
});
e.stopPropagation();
});
// Avoid dropdown panels to close on click
$("div.dropdown-menu").click(function(e) {
e.stopPropagation();
});
});
return core;
});