app.js

var demoApp = angular.module('demoApp', ['ngResource'], function($locationProvider) {
    $locationProvider.hashPrefix('');
});

function MainCtrl($scope, Serv) {
    $scope.selectedItem = {
        value: 0,
        label: ''
    };
    $scope.Wrapper = Serv;    
}
demoApp.directive('richTextEditor', function( $log, $location ) {

        var self = this;
        var directive = {
                restrict : "A",
                replace : true,
                transclude : true,
                scope : {

                },             
                template : 

                        "<div>" +

                                "<textarea id=\"richtexteditor-content\" style=\"height:300px;width:100%\"></textarea>"+

                        "</div>",

                link : function( $scope, $element, $attrs ) {
                        $scope.editor = $('#richtexteditor-content').wysihtml5();

                        

//                        $scope.editor = new wysihtml5.Editor( "richtexteditor-content", {

//                                toolbar : "richtexteditor-toolbar",
 //                              parserRules: wysihtml5ParserRules       
 //                    });
                        
                        $scope.$parent.$watch( $attrs.content, function( newValue, oldValue ) {
                                
                                $scope.editor.innerHTML = newValue;
                                $scope.editor.composer.setValue( newValue );
                     });
                        
                        $scope.cancel = function() {
                                $scope.$parent.cancel();
                        }
                       /* $scope.save = function() {
                                var currentTemplateContent = $encryption.encodeHtml( $scope.editor.getValue() );
                                $scope.$parent.currentTemplate.content = currentTemplateContent;
                                $scope.$parent.save();
                        }
                        */
                        $scope.isClean = function() {
                                $scope.$parent.isClean();
                        }
                }
        }
        return directive;
});

bootstrap-wysiHtml5.css

ul.wysihtml5-toolbar {
	margin: 0;
	padding: 0;
	display: block;
}

ul.wysihtml5-toolbar::after {
	clear: both;
	display: table;
	content: "";
}

ul.wysihtml5-toolbar > li {
	float: left;
	display: list-item;
	list-style: none;
	margin: 0 5px 10px 0;
}

ul.wysihtml5-toolbar a[data-wysihtml5-command=bold] {
	font-weight: bold;
}

ul.wysihtml5-toolbar a[data-wysihtml5-command=italic] {
	font-style: italic;
}

ul.wysihtml5-toolbar a[data-wysihtml5-command=underline] {
	text-decoration: underline;
}

ul.wysihtml5-toolbar a.btn.wysihtml5-command-active {
	background-image: none;
	-webkit-box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15),0 1px 2px rgba(0, 0, 0, 0.05);
	-moz-box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15),0 1px 2px rgba(0, 0, 0, 0.05);
	box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15),0 1px 2px rgba(0, 0, 0, 0.05);
	background-color: #E6E6E6;
	background-color: #D9D9D9 9;
	outline: 0;
}

ul.wysihtml5-commands-disabled .dropdown-menu {
	display: none !important;
}

bootstrap-wysihtml5.js

!function($, wysi) {
    "use strict";

    var templates = {
        "font-styles": "<li class='dropdown'>" +
                           "<a class='btn dropdown-toggle' data-toggle='dropdown' href='#'>" +
                               "<i class='icon-font'></i>&nbsp;<span class='current-font'>Normal text</span>&nbsp;<b class='caret'></b>" +
                           "</a>" +
                           "<ul class='dropdown-menu'>" +
                               "<li><a data-wysihtml5-command='formatBlock' data-wysihtml5-command-value='div'>Normal text</a></li>" +
                               "<li><a data-wysihtml5-command='formatBlock' data-wysihtml5-command-value='h1'>Heading 1</a></li>" +
                               "<li><a data-wysihtml5-command='formatBlock' data-wysihtml5-command-value='h2'>Heading 2</a></li>" +
                           "</ul>" +
                       "</li>",
        "emphasis":    "<li>" +
                           "<div class='btn-group'>" +
                               "<a class='btn' data-wysihtml5-command='bold' title='CTRL+B'>Bold</a>" +
                               "<a class='btn' data-wysihtml5-command='italic' title='CTRL+I'>Italic</a>" +
                               "<a class='btn' data-wysihtml5-command='underline' title='CTRL+U'>Underline</a>" +
                           "</div>" +
                       "</li>",
        "lists":       "<li>" +
                           "<div class='btn-group'>" +
                               "<a class='btn' data-wysihtml5-command='insertUnorderedList' title='Unordered List'><i class='icon-list'></i></a>" +
                               "<a class='btn' data-wysihtml5-command='insertOrderedList' title='Ordered List'><i class='icon-th-list'></i></a>" +
                               "<a class='btn' data-wysihtml5-command='Outdent' title='Outdent'><i class='icon-indent-right'></i></a>" +
                               "<a class='btn' data-wysihtml5-command='Indent' title='Indent'><i class='icon-indent-left'></i></a>" +
                           "</div>" +
                       "</li>",
        "link":        "<li>" +
                           "<div class='bootstrap-wysihtml5-insert-link-modal modal hide fade'>" +
                               "<div class='modal-header'>" +
                                   "<a class='close' data-dismiss='modal'>&times;</a>" +
                                   "<h3>Insert Link</h3>" +
                               "</div>" +
                               "<div class='modal-body'>" +
                                   "<input value='http://' class='bootstrap-wysihtml5-insert-link-url input-xlarge'>" +
                               "</div>" +
                                 "<div class='modal-body'>" +
                                    "<h5>Anchor Text</h5>" +
                                   "<input value='' class='anchorText input-xlarge'>" +
                               "</div>" +
                               "<div class='modal-footer'>" +
                                   "<a href='#' class='btn' data-dismiss='modal'>Cancel</a>" +
                                   "<a href='#' class='btn btn-primary2' data-dismiss='modal'>Insert link</a>" +
                               "</div>" +
                           "</div>" +
                           "<a class='btn' data-wysihtml5-command='createLink' title='Link'><i class='icon-share'></i></a>" +
                       "</li>",
        "image":       "<li>" +
                           "<div class='bootstrap-wysihtml5-insert-image-modal modal hide fade'>" +
                               "<div class='modal-header'>" +
                                   "<a class='close' data-dismiss='modal'>&times;</a>" +
                                   "<h3>Insert Image</h3>" +
                               "</div>" +
                               "<div class='modal-body'>" +
                                   "<input value='http://' class='bootstrap-wysihtml5-insert-image-url input-xlarge'>" +
                               "</div>" +
                               "<div class='modal-footer'>" +
                                   "<a href='#' class='btn' data-dismiss='modal'>Cancel</a>" +
                                   "<a href='#' class='btn btn-primary' data-dismiss='modal'>Insert image</a>" +
                               "</div>" +
                           "</div>" +
                           "<a class='btn' data-wysihtml5-command='insertImage' title='Insert image'><i class='icon-picture'></i></a>" +
                       "</li>",

        "html":
                       "<li>" +
                           "<div class='btn-group'>" +
                               "<a class='btn' data-wysihtml5-action='change_view' title='Edit HTML'><i class='icon-pencil'></i></a>" +
                           "</div>" +
                       "</li>"
    };

    var defaultOptions = {
        "font-styles": true,
        "emphasis": true,
        "lists": true,
        "html": true,
        "link": true,
        "image": true,
        events: {},
        parserRules: {
            tags: {
                "b":  {},
                "i":  {},
                "br": {},
                "ol": {},
                "ul": {},
                "li": {},
                "h1": {},
                "h2": {},
                "blockquote": {},
                "u": 1,
                "img": {
                    "check_attributes": {
                        "width": "numbers",
                        "alt": "alt",
                        "src": "url",
                        "height": "numbers"
                    }
                },
                "a":  {
                    set_attributes: {
                        target: "_blank",
                        rel:    "nofollow"
                    },
                    check_attributes: {
                        href:   "url" // important to avoid XSS
                    }
                }
            }
        },
        stylesheets: []
    };

    var Wysihtml5 = function(el, options) {
        this.el = el;
        this.toolbar = this.createToolbar(el, options || defaultOptions);
        this.editor =  this.createEditor(options);

        window.editor = this.editor;

        $('iframe.wysihtml5-sandbox').each(function(i, el){
            $(el.contentWindow).off('focus.wysihtml5').on({
              'focus.wysihtml5' : function(){
                 $('li.dropdown').removeClass('open');
               }
            });
        });
    };

    Wysihtml5.prototype = {

        constructor: Wysihtml5,

        createEditor: function(options) {
            options = $.extend(defaultOptions, options || {});
		    options.toolbar = this.toolbar[0];

		    var editor = new wysi.Editor(this.el[0], options);

            if(options && options.events) {
                for(var eventName in options.events) {
                    editor.on(eventName, options.events[eventName]);
                }
            }

            return editor;
        },

        createToolbar: function(el, options) {
            var self = this;
            var toolbar = $("<ul/>", {
                'class' : "wysihtml5-toolbar",
                'style': "display:none"
            });

            for(var key in defaultOptions) {
                var value = false;

                if(options[key] !== undefined) {
                    if(options[key] === true) {
                        value = true;
                    }
                } else {
                    value = defaultOptions[key];
                }

                if(value === true) {
                    toolbar.append(templates[key]);

                    if(key == "html") {
                        this.initHtml(toolbar);
                    }

                    if(key == "link") {
                        this.initInsertLink(toolbar);
                    }

                    if(key == "image") {
                        this.initInsertImage(toolbar);
                    }
                }
            }

            toolbar.find("a[data-wysihtml5-command='formatBlock']").click(function(e) {
                var el = $(e.srcElement);
                self.toolbar.find('.current-font').text(el.html());
            });

            this.el.before(toolbar);

            return toolbar;
        },

        initHtml: function(toolbar) {
            var changeViewSelector = "a[data-wysihtml5-action='change_view']";
            toolbar.find(changeViewSelector).click(function(e) {
                toolbar.find('a.btn').not(changeViewSelector).toggleClass('disabled');
            });
        },

        initInsertImage: function(toolbar) {
            var self = this;
            var insertImageModal = toolbar.find('.bootstrap-wysihtml5-insert-image-modal');
            var urlInput = insertImageModal.find('.bootstrap-wysihtml5-insert-image-url');
            var insertButton = insertImageModal.find('a.btn-primary2');
            var initialValue = urlInput.val();

            var insertImage = function() {
                var url = urlInput.val();
                urlInput.val(initialValue);
                self.editor.composer.commands.exec("insertImage", url);
            };

            urlInput.keypress(function(e) {
                if(e.which == 13) {
                    insertImage();
                    insertImageModal.modal('hide');
                }
            });

            insertButton.click(insertImage);

            insertImageModal.on('shown', function() {
                urlInput.focus();
            });

            insertImageModal.on('hide', function() {
                self.editor.currentView.element.focus();
            });

            toolbar.find('a[data-wysihtml5-command=insertImage]').click(function() {
                insertImageModal.modal('show');
                insertImageModal.on('click.dismiss.modal', '[data-dismiss="modal"]', function(e) {
					e.stopPropagation();
				});
                return false;
            });
        },

        initInsertLink: function(toolbar) {
            var self = this;
            var insertLinkModal = toolbar.find('.bootstrap-wysihtml5-insert-link-modal');
            var urlInput = insertLinkModal.find('.bootstrap-wysihtml5-insert-link-url');
            var anchorText = insertLinkModal.find('.anchorText');
            var insertButton = insertLinkModal.find('a.btn-primary2');
            var initialValue = urlInput.val();

            var insertLink = function() {
             
                var url = urlInput.val();
                urlInput.val(anchorText.val());
                self.editor.composer.commands.exec("createLink", {
                    href: url,
                    target: "_blank",
                    rel: "nofollow",
                    value: anchorText.val(),
                });
            };
            var pressedEnter = false;

            urlInput.keypress(function(e) {
                if(e.which == 13) {
                    insertLink();
                    insertLinkModal.modal('hide');
                }
            });

            insertButton.click(insertLink);

            insertLinkModal.on('shown', function() {
                urlInput.focus();
            });

            insertLinkModal.on('hide', function() {
                self.editor.currentView.element.focus();
            });

            toolbar.find('a[data-wysihtml5-command=createLink]').click(function() {
                insertLinkModal.modal('show');
                insertLinkModal.on('click.dismiss.modal', '[data-dismiss="modal"]', function(e) {
					e.stopPropagation();
				});
                return false;
            });


        }
    };

    $.fn.wysihtml5 = function (options) {
        return this.each(function () {
            var $this = $(this);
            $this.data('wysihtml5', new Wysihtml5($this, options));
        });
    };

    $.fn.wysihtml5.Constructor = Wysihtml5;

}(window.jQuery, window.wysihtml5);

index.html

<script type="text/javascript" src="http://docs.angularjs.org/angular-resource-1.0.1.min.js"></script>
<script type="text/javascript" src="bootstrap-wysiHtml5.js"></script>
<link rel="stylesheet" type="text/css" href="http://angular-ui.github.com/lib/bootstrap/docs/assets/css/bootstrap.css" >

<link rel="stylesheet" type="text/css" href="bootstrap-wysiHtml5.css" >
<div lang="en" ng-app="demoApp" ng-controller="MainCtrl">  
    <div rich-text-editor></div> 
    <button class="btn btn-primary">Click Me</button>
</div>

​