From f5e80f2bbc1b64c40c8cd5c2419557d453ea3fb3 Mon Sep 17 00:00:00 2001
From: benweet <benoit.schweblin@gmail.com>
Date: Fri, 13 Sep 2013 00:25:25 +0100
Subject: [PATCH] Switch to ACE editor

---
 index.html                         |   2 +-
 res/classes/Extension.js           |   3 +-
 res/config.js                      |   1 +
 res/core.js                        | 162 +++++++++++++++++++----------
 res/eventMgr.js                    |   6 +-
 res/extensions/buttonFocusMode.js  |  60 +++++++++++
 res/extensions/documentSelector.js |   8 +-
 res/extensions/focusMode.js        |  48 ---------
 res/extensions/scrollLink.js       |   2 +-
 res/extensions/welcomeTour.js      |   4 +-
 res/html/bodyIndex.html            |   9 ++
 res/main.js                        |  15 ++-
 res/settings.js                    |   1 +
 res/styles/main.less               |  53 ++++++----
 res/utils.js                       |   2 +-
 viewer.html                        |   2 +-
 16 files changed, 242 insertions(+), 136 deletions(-)
 create mode 100644 res/extensions/buttonFocusMode.js
 delete mode 100644 res/extensions/focusMode.js

diff --git a/index.html b/index.html
index 1d603083..7b69fb26 100644
--- a/index.html
+++ b/index.html
@@ -14,7 +14,7 @@
 <script>
     // Use http://.../?debug to serve original JavaScript files instead of minified
     var baseDir = 'res';
-    if(!location.search.match(/(\?|&)debug/)) {
+    if(!/(\?|&)debug($|&)/.test(location.search)) {
         baseDir += '-min';
     }
     var require = {
diff --git a/res/classes/Extension.js b/res/classes/Extension.js
index 3f9786f1..0957727c 100644
--- a/res/classes/Extension.js
+++ b/res/classes/Extension.js
@@ -1,10 +1,11 @@
 define(function() {
     
-    function Extension(extensionId, extensionName, isOptional, disableInViewer) {
+    function Extension(extensionId, extensionName, isOptional, disableInViewer, disableInLight) {
         this.extensionId = extensionId;
         this.extensionName = extensionName;
         this.isOptional = isOptional;
         this.disableInViewer = disableInViewer;
+        this.disableInLight = disableInLight;
     }
     
     return Extension;
diff --git a/res/config.js b/res/config.js
index 973627f5..41f1a375 100644
--- a/res/config.js
+++ b/res/config.js
@@ -16,6 +16,7 @@ var BITLY_ACCESS_TOKEN = "317e033bfd48cf31155a68a536b1860013b09c4c";
 var DEFAULT_FILE_TITLE = "Title";
 var DEFAULT_FOLDER_NAME = "New folder";
 var GDRIVE_DEFAULT_FILE_TITLE = "New Markdown document";
+var EDITOR_DEFAULT_PADDING = 12;
 var CHECK_ONLINE_PERIOD = 120000;
 var AJAX_TIMEOUT = 30000;
 var ASYNC_TASK_DEFAULT_TIMEOUT = 60000;
diff --git a/res/core.js b/res/core.js
index 84419363..9c836df1 100644
--- a/res/core.js
+++ b/res/core.js
@@ -114,6 +114,8 @@ define([
         utils.setInputValue("#input-settings-editor-font-family", settings.editorFontFamily);
         // Editor font size
         utils.setInputValue("#input-settings-editor-font-size", settings.editorFontSize);
+        // Editor max width
+        utils.setInputValue("#input-settings-editor-max-width", settings.editorMaxWidth);
         // Default content
         utils.setInputValue("#textarea-settings-default-content", settings.defaultContent);
         // Commit message
@@ -141,6 +143,8 @@ define([
         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);
+        // Editor max width
+        newSettings.editorMaxWidth = utils.getInputIntValue("#input-settings-editor-max-width", event, 1);
         // Default content
         newSettings.defaultContent = utils.getInputValue("#textarea-settings-default-content");
         // Commit message
@@ -190,14 +194,21 @@ define([
     // Create ACE editor
     var aceEditor = undefined;
     function createAceEditor() {
+        if(lightMode) {
+            // In light mode, we replace ACE with a textarea
+            $('#wmd-input').replaceWith(function() {
+                return $('<textarea id="wmd-input">').addClass(this.className).addClass('form-control');
+            });
+            return;
+        }
         aceEditor = ace.edit("wmd-input");
         aceEditor.renderer.setShowGutter(false);
-        //aceEditor.renderer.setShowPrintMargin(false);
+        aceEditor.renderer.setShowPrintMargin(false);
         aceEditor.renderer.setPrintMarginColumn(false);
-        aceEditor.renderer.setPadding(15);
+        aceEditor.renderer.setPadding(EDITOR_DEFAULT_PADDING);
         aceEditor.session.setUseWrapMode(true);
         aceEditor.session.setMode("libs/acemode");
-        // Make bold titles...
+        // Make titles bold...
         (function(self) {
             function customWorker() {
                 if (!self.running) { return; }
@@ -273,9 +284,21 @@ define([
                     setPreviewButtonsVisibility(true);
                 }
             },
-            onresize: function() {
-                aceEditor.resize();
-                eventMgr.onLayoutResize();
+            onresize_end: function(paneName) {
+                if(aceEditor !== undefined && paneName == 'center') {
+                    aceEditor.resize();
+                    setTimeout(function() {
+                        var padding = (aceEditor.renderer.$size.scrollerWidth - settings.editorMaxWidth)/2;
+                        if(padding < EDITOR_DEFAULT_PADDING) {
+                            padding = EDITOR_DEFAULT_PADDING;
+                        }
+                        if(padding !== aceEditor.renderer.$padding) {
+                            aceEditor.renderer.setPadding(padding);
+                            aceEditor.resize(true);
+                        }
+                    }, 5);
+                }                
+                eventMgr.onLayoutResize(paneName);
             },
         };
         eventMgr.onLayoutConfigure(layoutGlobalConfig);
@@ -285,7 +308,7 @@ define([
             layout = $('body').layout($.extend(layoutGlobalConfig, {
                 east__resizable: true,
                 east__size: .5,
-                east__minSize: 250
+                east__minSize: 260
             }));
         }
         else if(settings.layoutOrientation == "vertical") {
@@ -308,14 +331,16 @@ define([
         // have fixed position
         // We also move the north toggler to the east or south resizer as the
         // north resizer is very small
-        $previewButtonsElt = $('<div class="extension-preview-buttons">');
+        var $previewButtonsContainerElt = $('<div class="preview-button-container">');
+        $previewButtonsElt = $('<div class="extension-preview-buttons">').appendTo($previewButtonsContainerElt);
         $editorButtonsElt = $('<div class="extension-editor-buttons">');
         if(settings.layoutOrientation == "horizontal") {
-            $('.ui-layout-resizer-north').append($previewButtonsElt);
+            $('.ui-layout-resizer-north').append($previewButtonsContainerElt);
             $('.ui-layout-resizer-east').append($northTogglerElt).append($editorButtonsElt);
         }
         else {
-            $('.ui-layout-resizer-south').append($previewButtonsElt).append($northTogglerElt).append($editorButtonsElt);
+            $previewButtonsContainerElt.append($editorButtonsElt);
+            $('.ui-layout-resizer-south').append($previewButtonsContainerElt).append($northTogglerElt);
         }
 
         setPanelVisibility();
@@ -326,6 +351,7 @@ define([
 
     // Create the PageDown editor
     var editor = undefined;
+    var $editorElt = undefined;
     var fileDesc = undefined;
     var documentContent = undefined;
     var UndoManager = require("ace/undomanager").UndoManager;
@@ -337,40 +363,52 @@ define([
         documentContent = undefined;
         var initDocumentContent = fileDesc.content;
 
-        aceEditor.setValue(initDocumentContent, -1);
-        aceEditor.getSession().setUndoManager(new UndoManager());
+        if(aceEditor !== undefined) {
+            aceEditor.setValue(initDocumentContent, -1);
+            aceEditor.getSession().setUndoManager(new UndoManager());
+        }
+        else {
+            $editorElt.val(initDocumentContent);
+        }
         
         if(editor !== undefined) {
             // If the editor is already created
-            aceEditor.selection.setSelectionRange(fileDesc.editorSelectRange);
-            aceEditor.focus();
+            if(aceEditor !== undefined) {
+                aceEditor.selection.setSelectionRange(fileDesc.editorSelectRange);
+                aceEditor.focus();
+            }
+            else {
+                $editorElt.focus();
+            }
             editor.refreshPreview();
             return;
         }
 
         var $previewContainerElt = $(".preview-container");
 
-        // Store editor scrollTop on scroll event
-        var debouncedUpdateScroll = _.debounce(function() {
-            fileDesc.editorScrollTop = aceEditor.renderer.getScrollTop();
-        }, 100);
-        aceEditor.session.on('changeScrollTop', function() {
-            if(documentContent !== undefined) {
-                debouncedUpdateScroll();
-            }
-        });
-        // Store editor selection on change
-        aceEditor.session.selection.on('changeSelection', function() {
-            if(documentContent !== undefined) {
-                fileDesc.editorSelectRange = aceEditor.getSelectionRange();
-            }
-        });
-        // Store preview scrollTop on scroll event
-        $previewContainerElt.scroll(function() {
-            if(documentContent !== undefined) {
-                fileDesc.previewScrollTop = $previewContainerElt.scrollTop();
-            }
-        });
+        if(!lightMode) {
+            // Store editor scrollTop on scroll event
+            var debouncedUpdateScroll = _.debounce(function() {
+                fileDesc.editorScrollTop = aceEditor.renderer.getScrollTop();
+            }, 100);
+            aceEditor.session.on('changeScrollTop', function() {
+                if(documentContent !== undefined) {
+                    debouncedUpdateScroll();
+                }
+            });
+            // Store editor selection on change
+            aceEditor.session.selection.on('changeSelection', function() {
+                if(documentContent !== undefined) {
+                    fileDesc.editorSelectRange = aceEditor.getSelectionRange();
+                }
+            });
+            // Store preview scrollTop on scroll event
+            $previewContainerElt.scroll(function() {
+                if(documentContent !== undefined) {
+                    fileDesc.previewScrollTop = $previewContainerElt.scrollTop();
+                }
+            });
+        }
 
         // Create the converter and the editor
         var converter = new Markdown.Converter();
@@ -395,24 +433,35 @@ define([
             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) {
+        
+        if(!lightMode) {
+            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;
-            }
-            utils.resetModalInputs();
-            $(".modal-insert-image").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;
+            });
+        }
+        else {
+            $editor.on("input propertychange", function() {
+                
+            });
+            editor = {
+                
+            };
+        }
 
         function checkDocumentChanges() {
             var newDocumentContent = aceEditor.getValue();
@@ -563,16 +612,17 @@ define([
             }
         });
 
-        // Editor's textarea
-        $("#wmd-input").css({
+        // ACE editor
+        createAceEditor();
+        
+        // Editor's element
+        $editorElt = $("#wmd-input").css({
             // Apply editor font
             "font-family": settings.editorFontFamily,
             "font-size": settings.editorFontSize + "px",
             "line-height": Math.round(settings.editorFontSize * (20 / 12)) + "px"
         });
 
-        // ACE editor
-        createAceEditor();
         // UI layout
         createLayout();
 
diff --git a/res/eventMgr.js b/res/eventMgr.js
index 01af12a0..14542b33 100644
--- a/res/eventMgr.js
+++ b/res/eventMgr.js
@@ -25,7 +25,7 @@ define([
     "extensions/mathJax",
     "extensions/emailConverter",
     "extensions/scrollLink",
-    "extensions/focusMode",
+    "extensions/buttonFocusMode",
     "extensions/buttonSync",
     "extensions/buttonPublish",
     "extensions/buttonShare",
@@ -55,6 +55,10 @@ define([
             // doesn't support it
             extension.enabled = false;
         }
+        else if(lightMode === true && extension.disableInLight === true) {
+            // Same for light mode
+            extension.enabled = false;
+        }
         else {
             // Enable the extension if it's not optional or it has not been
             // disabled by the user
diff --git a/res/extensions/buttonFocusMode.js b/res/extensions/buttonFocusMode.js
new file mode 100644
index 00000000..f32296be
--- /dev/null
+++ b/res/extensions/buttonFocusMode.js
@@ -0,0 +1,60 @@
+define([
+    "jquery",
+    "underscore",
+    "crel",
+    "classes/Extension"
+], function($, _, crel, Extension) {
+
+    var buttonFocusMode = new Extension("buttonFocusMode", 'Button "Focus Mode"', true, true, true);
+    buttonFocusMode.settingsBlock = "When typing, scrolls automatically the editor to always have the caret centered verticaly.";
+
+    var aceEditor = undefined;
+    buttonFocusMode.onAceCreated = function(aceEditorParam) {
+        aceEditor = aceEditorParam;
+    };
+
+    var isFocusModeOn = false;
+    var isMouseActive = false;
+    function doFocusMode() {
+        if(isFocusModeOn === false || isMouseActive === true) {
+            return;
+        }
+        var positionInDocument = aceEditor.selection.getCursor();
+        var positionInScreen = aceEditor.session.documentToScreenPosition(positionInDocument.row, positionInDocument.column);
+        aceEditor.session.setScrollTop((positionInScreen.row + 0.5) * aceEditor.renderer.lineHeight - aceEditor.renderer.$size.scrollerHeight / 2);
+    }
+
+    var $button = undefined;
+    buttonFocusMode.onReady = function() {
+        aceEditor.getSession().selection.on('changeCursor', doFocusMode);
+        aceEditor.container.addEventListener('keydown', function() {
+            isMouseActive = false;
+        }, true);
+        aceEditor.container.addEventListener('mousedown', function() {
+            isMouseActive = true;
+        }, true);
+        if(localStorage.focusMode == 'on') {
+            $button.click();
+        }
+    };
+
+    buttonFocusMode.onCreateEditorButton = function() {
+        $button = $([
+            '<button class="btn btn-info" title="Focus Mode" data-toggle="button">',
+            '   <i class="icon-target"></i>',
+            '</button>'
+        ].join(''));
+        $button.click(function() {
+            _.defer(function() {
+                isFocusModeOn = $button.is('.active');
+                localStorage.focusMode = isFocusModeOn ? 'on' : 'off';
+                isMouseActive = false;
+                aceEditor.focus();
+                doFocusMode();
+            });
+        });
+        return $button[0];
+    };
+
+    return buttonFocusMode;
+});
\ No newline at end of file
diff --git a/res/extensions/documentSelector.js b/res/extensions/documentSelector.js
index 839a37c9..4b047328 100644
--- a/res/extensions/documentSelector.js
+++ b/res/extensions/documentSelector.js
@@ -52,6 +52,7 @@ define([
     var sortFunction = undefined;
     var selectFileDesc = undefined;
     var selectedLi = undefined;
+    var $editorElt = undefined;
     var buildSelector = function() {
         var liListHtml = _.chain(fileSystem).sortBy(sortFunction).reduce(function(result, fileDesc) {
             return result + _.template(liEltTmpl, {
@@ -73,9 +74,12 @@ define([
                 if(!$liElt.hasClass("disabled")) {
                     fileMgr.selectFile(fileDesc);
                 }
-                else {
+                else if(aceEditor !== undefined) {
                     aceEditor.focus();
                 }
+                else {
+                    $editorElt.focus();
+                }
             });
         });
 
@@ -95,6 +99,8 @@ define([
     documentSelector.onPublishRemoved = buildSelector;
 
     documentSelector.onReady = function() {
+        $editorElt = $('#wmd-input');
+        
         if(documentSelector.config.orderBy == "title") {
             sortFunction = function(fileDesc) {
                 return fileDesc.title.toLowerCase();
diff --git a/res/extensions/focusMode.js b/res/extensions/focusMode.js
deleted file mode 100644
index b0cc9921..00000000
--- a/res/extensions/focusMode.js
+++ /dev/null
@@ -1,48 +0,0 @@
-define([
-    "jquery",
-    "underscore",
-    "crel",
-    "classes/Extension"
-], function($, _, crel, Extension) {
-
-    var focusMode = new Extension("focusMode", "Focus Mode", true, true);
-    focusMode.settingsBlock = "Scrolls automatically the editor to have the caret verticaly centered";
-    
-    var aceEditor = undefined;
-    focusMode.onAceCreated = function(aceEditorParam) {
-        aceEditor = aceEditorParam;
-    };
-    
-    var isActive = false;
-    function doFocus() {
-        if(isActive === false) {
-            return;
-        }
-        var positionInDocument = aceEditor.selection.getCursor();
-        var positionInScreen = aceEditor.session.documentToScreenPosition(positionInDocument.row, positionInDocument.column);
-        aceEditor.session.setScrollTop((positionInScreen.row+0.5) * aceEditor.renderer.lineHeight - aceEditor.renderer.$size.scrollerHeight / 2);
-    }
-
-    focusMode.onReady = function() {
-        //aceEditor.getSession().on('change', doFocus);
-        aceEditor.getSession().selection.on('changeCursor', doFocus);
-    };
-
-    focusMode.onCreateEditorButton = function() {
-        var $button = $([
-            '<button class="btn btn-info" title="Focus Mode" data-toggle="button">',
-            '   <i class="icon-target"></i>',
-            '</button>'
-        ].join(''));
-        $button.click(function() {
-            _.defer(function() {
-                isActive = $button.is('.active');
-                aceEditor.focus();
-                doFocus();
-            });
-        });
-        return $button[0];
-    };
-
-    return focusMode;
-});
\ No newline at end of file
diff --git a/res/extensions/scrollLink.js b/res/extensions/scrollLink.js
index 6a8637c1..c74e191c 100644
--- a/res/extensions/scrollLink.js
+++ b/res/extensions/scrollLink.js
@@ -5,7 +5,7 @@ define([
     "text!html/scrollLinkSettingsBlock.html"
 ], function($, _, Extension, scrollLinkSettingsBlockHTML) {
 
-    var scrollLink = new Extension("scrollLink", "Scroll Link", true, true);
+    var scrollLink = new Extension("scrollLink", "Scroll Link", true, true, true);
     scrollLink.settingsBlock = scrollLinkSettingsBlockHTML;
 
     var aceEditor = undefined;
diff --git a/res/extensions/welcomeTour.js b/res/extensions/welcomeTour.js
index 0a896660..3045a977 100644
--- a/res/extensions/welcomeTour.js
+++ b/res/extensions/welcomeTour.js
@@ -34,7 +34,7 @@ define([
         tour.addSteps([
             {
                 element: ".navbar-inner",
-                title: "Welcome to StackEdit 2.0",
+                title: "Welcome to StackEdit",
                 content: "Please click <code>Next</code> to take a quick tour.",
                 placement: "bottom",
             },
@@ -42,7 +42,7 @@ define([
                 element: ".navbar .action-create-file",
                 title: "New document",
                 content: "Click the <i class='icon-file'></i> <code>New document</code> button to create a new document.",
-                placement: "left",
+                placement: "bottom",
                 reflex: true,
             },
             {
diff --git a/res/html/bodyIndex.html b/res/html/bodyIndex.html
index 20c9a189..75257bfd 100644
--- a/res/html/bodyIndex.html
+++ b/res/html/bodyIndex.html
@@ -944,6 +944,15 @@
 										class="form-control col-lg-2"> px
 								</div>
 							</div>
+							<div class="form-group">
+								<label class="col-lg-4 control-label"
+									for="input-settings-editor-max-width">Editor max width</label>
+								<div class="col-lg-8 form-inline">
+									<input type="text"
+										id="input-settings-editor-max-width"
+										class="form-control col-lg-3"> px
+								</div>
+							</div>
 							<div class="form-group">
 								<label class="col-lg-4 control-label"
 									for="textarea-settings-default-content">Default content
diff --git a/res/main.js b/res/main.js
index 2d636502..5ecffd9a 100644
--- a/res/main.js
+++ b/res/main.js
@@ -120,12 +120,25 @@ var logger = {
     }
 };
 // We can run StackEdit with http://.../?console to print logs in the console
-if(location.search.match(/(\?|&)console/)) {
+if(/(\?|&)console($|&)/.test(location.search)) {
     logger = console;
 }
 
+// Viewer mode is deduced from the body class
 var viewerMode = /(^| )viewer($| )/.test(document.body.className);
 
+// Light mode is for mobile or viewer
+var lightMode =
+    viewerMode
+        || /(\?|&)light($|&)/.test(location.search)
+        || (function(a) {
+            if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test(a)
+                || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i
+                    .test(a.substr(0, 4)))
+                return true;
+        })(navigator.userAgent || navigator.vendor || window.opera);
+
+// Keep the theme in a global variable
 var theme = localStorage.theme || 'default';
 var themeModule = "less!themes/" + theme;
 if(baseDir.indexOf('-min') !== -1) {
diff --git a/res/settings.js b/res/settings.js
index a176872e..ef0f968d 100644
--- a/res/settings.js
+++ b/res/settings.js
@@ -8,6 +8,7 @@ define([
         lazyRendering: true,
         editorFontFamily: 'Menlo, Consolas, "Courier New", Courier, monospace',
         editorFontSize: 12,
+        editorMaxWidth: 960,
         defaultContent: "\n\n\n> Written with [StackEdit](" + MAIN_URL + ").",
         commitMsg: "Published with " + MAIN_URL,
         template: [
diff --git a/res/styles/main.less b/res/styles/main.less
index 429541ea..a754eaee 100644
--- a/res/styles/main.less
+++ b/res/styles/main.less
@@ -561,15 +561,23 @@ body {
 
 
 /********************
- * Preview extensions buttons
+ * Preview/Editor extensions buttons
  ********************/
+
+.preview-button-container {
+    position: absolute;
+    right: 0;
+    .extension-editor-buttons {
+		position: relative;
+	}
+}
  
 .extension-preview-buttons {
-    position: absolute;
-    right: 30px;
+	display: inline-block;
     z-index: 1;
-    top: 6px;
-    .ui-layout-resizer-south-closed > & {
+    margin-top: 6px;
+    margin-right: 30px;
+    .ui-layout-resizer-south-closed & {
     	display: none !important;
     }
 	.dropdown-menu {
@@ -580,7 +588,7 @@ body {
 		margin: 0 0 0 1px;
 		.btn {
 			position: initial;
-			background-color: fade(@navbar-default-bg, 50%);
+			background-color: fade(@navbar-default-bg, 33%);
 		}
 		&.open .btn{
 			background-color: @primary-bg-light;
@@ -617,25 +625,22 @@ body {
 	}
 }
 
-
-/********************
- * Editor extensions buttons
- ********************/
- 
 .extension-editor-buttons {
 	position: absolute;
+	display: inline-block;
+	vertical-align: top;
+	.btn {
+		background-color: fade(@navbar-default-bg, 33%);
+		text-align: center;
+		height: 35px;
+		width: 35px;
+		padding: 0;
+	}
 	.ui-layout-resizer-east & {
 		bottom: 0;
-		& .btn {
-			width: 35px;
-			padding: 10px 7px;
-		}
 	}
 	.ui-layout-resizer-south & {
 		right: 0;
-		& .btn {
-			height: 35px;
-		}
 	}
 }
 
@@ -765,7 +770,7 @@ body {
 		&:focus,
 		&:active,
 		&.active {
-			background-color: fade(@navbar-default-bg, 50%);
+			background-color: mix(@primary-bg-lighter, @navbar-default-bg, 50%);
 			i {
 				color: @btn-success-color
 			}
@@ -945,7 +950,7 @@ ul,ol {
 	}
 	
 	.ace_markup.ace_heading {
-		color: @primary-color-light;
+		color: @primary-color;
 		font-weight: bold;
 	}
 	
@@ -958,6 +963,7 @@ ul,ol {
 	}
 	
 	.ace_emphasis {
+		color: @primary-color;
 		font-style: italic;
 	}
 	
@@ -981,10 +987,13 @@ ul,ol {
 }
 
 #wmd-input {
+	color: @primary-color-light;
 	.box-shadow(none);
-	padding: 0;
 	resize: none;
 	border: none !important;
+	div& {
+		padding: 0;
+	}
 }
 
 .preview-container {
@@ -1169,7 +1178,7 @@ input[type="file"] {
  *********************/
 
 .popover {
-	max-width: 360px;
+	max-width: 350px;
 	padding: 15px;
 	.box-shadow(0 5px 30px rgba(0,0,0,.4));
 	.popover-title {
diff --git a/res/utils.js b/res/utils.js
index 6fdd6027..bf60402f 100644
--- a/res/utils.js
+++ b/res/utils.js
@@ -72,7 +72,7 @@ define([
             return undefined;
         }
         value = parseInt(value);
-        if((value === NaN) || (min !== undefined && value < min) || (max !== undefined && value > max)) {
+        if(isNaN(value) || (min !== undefined && value < min) || (max !== undefined && value > max)) {
             inputError(element, event);
             return undefined;
         }
diff --git a/viewer.html b/viewer.html
index 65f4935e..49c7bc09 100644
--- a/viewer.html
+++ b/viewer.html
@@ -15,7 +15,7 @@
 <script>
     // Use http://.../?debug to serve original JavaScript files instead of minified
     var baseDir = 'res';
-    if(!location.search.match(/(\?|&)debug/)) {
+    if(!/(\?|&)debug($|&)/.test(location.search)) {
         baseDir += '-min';
     }
     var require = {