<!doctype html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Document</title>
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<link rel="stylesheet" href="../../third-party/mathquill/mathquill.css"/>
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<style>
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html, body, .main{
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margin: 0;
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padding: 0;
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overflow: hidden;
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}
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.main{
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width:1024px;
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height:1024px;
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}
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.mathquill-editable,
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.mathquill-rendered-math{
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border: 0px;
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padding: 0px;
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margin:4px;
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}
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</style>
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</head>
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<body>
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<div class="main">
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<div class="mathquill-editable"></div>
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</div>
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<div>
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<input id="blurHelper" />
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</div>
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<script src="../../third-party/jquery.min.js"></script>
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<script src="../../third-party/mathquill/mathquill.js"></script>
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<script>
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$(function(){
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var UM = parent.UM,
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$iframe = $(getSelfIframe()),
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editorId = $iframe.parents('.edui-body-container').attr('id'),
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editor = UM.getEditor(editorId),
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timer;
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/* 获得当前公式所在的iframe节点 */
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function getSelfIframe(){
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var iframes = parent.document.getElementsByTagName('iframe');
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for (var key in iframes) {
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if (iframes[key].contentWindow == window) {
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return iframes[key];
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}
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}
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return null;
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}
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/* 获得当前url上的hash存储的参数值 */
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function getLatex() {
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return $iframe.attr('data-latex') || '';
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}
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/* 保存场景 */
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function saveScene(){
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timer && clearTimeout(timer);
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timer = setTimeout(function(){
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editor.fireEvent('savescene');
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editor.fireEvent('contentchange');
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editor.fireEvent('selectionchange');
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timer = null;
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}, 300);
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}
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/* 设置编辑器可编辑 */
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function enableEditor(){
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if(editor.body.contentEditable == 'false') {
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editor.setEnabled();
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}
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}
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/* 设置编辑器不可编辑 */
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function disableEditor(){
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if(editor.body.contentEditable == 'true') {
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editor.setDisabled(['undo', 'redo', 'preview', 'formula'], true);
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}
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}
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/* 公式 */
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var Formula = function(){
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var _this = this,
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latex = getLatex();
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this.isFocus = false;
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this.isDisabled = false;
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/* 加载公式内容 */
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this.$mathquill = $('.mathquill-editable').mathquill('latex', latex);
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/* 设置活动状态的公式iframe */
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this.$mathquill.on('mousedown', function(){
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/* 编辑器不可用时,公式也不可用 */
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if(_this.disabled) return false;
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/* 第一次点击当前公式,设置公式活动 */
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if(!$iframe.hasClass('edui-formula-active')) {
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disableEditor();
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editor.blur();
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editor.$body.find('iframe').not($iframe).each(function(k, v){
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v.contentWindow.formula.blur();
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});
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if(_this.$mathquill.find('.cursor').css('display') == 'none') {
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_this.refresh();
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_this.$mathquill.addClass('hasCursor');
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}
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}
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_this.focus();
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});
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editor.addListener('click', function(){
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_this.blur();
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enableEditor();
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});
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/* 里面focus,编辑器也判断为focus */
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editor.addListener('isFocus', function(){
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return _this.isFocus;
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});
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/* um不可用,公式也不可编辑 */
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editor.addListener('setDisabled', function(type, except){
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if (!(except && except.join(' ').indexOf('formula') != -1) && _this.isDisabled != true ) {
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_this.setDisabled();
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}
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});
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editor.addListener('setEnabled', function(){
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if (_this.isDisabled != false) {
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_this.setEnabled();
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}
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});
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/* 设置更新外层iframe的大小和属性 */
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$(document.body).on('keydown', function(){
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_this.updateIframe();
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}).on('keyup', function(){
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_this.updateIframe();
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});
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/* 清除初始化的高亮状态 */
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this.$mathquill.removeClass('hasCursor');
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/* 初始化后延迟刷新外层iframe大小 */
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setTimeout(function(){
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_this.updateIframe();
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}, 300);
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};
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Formula.prototype = {
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focus:function(){
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$iframe.addClass('edui-formula-active');
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this.isFocus = true;
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},
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blur:function(){
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$iframe.removeClass('edui-formula-active');
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this.removeCursor();
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this.isFocus = false;
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},
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removeCursor: function(){
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this.$mathquill.find('span.cursor').hide();
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this.$mathquill.parent().find('.hasCursor').removeClass('hasCursor');
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},
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updateIframe: function(){
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$iframe.width(this.$mathquill.width()+8).height(this.$mathquill.height()+8);
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var latex = $iframe.attr('data-latex'),
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newLatex = this.getLatex();
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if(latex != newLatex) {
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$iframe.attr('data-latex', this.getLatex());
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saveScene();
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}
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},
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insertLatex: function(latex){
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this.$mathquill.mathquill('write', latex);
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this.updateIframe();
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this.removeCursor();
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},
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setLatex: function(latex){
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this.$mathquill.mathquill('latex', latex);
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this.updateIframe();
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},
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getLatex: function(){
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return this.$mathquill.mathquill('latex');
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},
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redraw: function(){
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this.$mathquill.mathquill('redraw');
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},
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setDisabled: function(){
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this.blur();
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var latex = this.getLatex();
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this.$mathquill.mathquill('revert').text(latex).mathquill();
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this.updateIframe();
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this.isDisabled = true;
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},
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setEnabled: function(){
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this.$mathquill.removeClass('mathquill-rendered-math');
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this.refresh();
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this.isDisabled = false;
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},
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refresh: function(){
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var latex = this.getLatex();
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this.$mathquill.mathquill('revert').text(latex).mathquill('editable');
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this.updateIframe();
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}
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};
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/* 绑定到window上，给上级window调用 */
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window.formula = new Formula();
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});
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</script>
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</body>
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</html>
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