Clone properly the component with its related styles. FIxes #3093

src/commands/view/CopyComponent.js

@@ -2,9 +2,6 @@ export default {
   run(ed) {
     const em = ed.getModel();
     const models = [...ed.getSelectedAll()];
-
-    if (models.length) {
-      em.set('clipboard', models);
-    }
+    models.length && em.set('clipboard', models);
   }
 };

src/css_composer/index.js

@@ -373,6 +373,24 @@ export default () => {
       );
     },
 
+    /**
+     * Find rules, in different states (eg. like `:hover`) and media queries, matching the selector.
+     * @param {string} selector Selector, eg. '.myclass'
+     * @returns {Array<CssRule>}
+     * @example
+     * // Common scenario, take all the component specific rules
+     * const id = someComponent.getId();
+     * const rules = cc.getRules(`#${id}`);
+     * console.log(rules.map(rule => rule.toCSS()))
+     */
+    getRules(selector) {
+      const rules = this.getAll();
+      const result = rules.filter(
+        r => r.getSelectors().getFullString() === selector
+      );
+      return result;
+    },
+
     /**
      * Add/update the CSS rule with id selector
      * @param {string} name Id selector name, eg. 'my-id'

src/css_composer/model/CssRule.js

@@ -41,10 +41,18 @@ export default Backbone.Model.extend(Styleable).extend({
 
   initialize(c, opt = {}) {
     this.config = c || {};
+    this.opt = opt;
     this.em = opt.em;
     this.ensureSelectors();
   },
 
+  clone() {
+    const opts = { ...this.opt };
+    const attr = { ...this.attributes };
+    attr.selectors = this.get('selectors').map(s => s.clone());
+    return new this.constructor(attr, opts);
+  },
+
   ensureSelectors() {
     const { em } = this;
     const result = [];

src/dom_components/model/Component.js

@@ -861,9 +861,10 @@ const Component = Backbone.Model.extend(Styleable).extend(
      */
     clone() {
       const em = this.em;
-      const style = this.getStyle();
       const attr = { ...this.attributes };
       const opts = { ...this.opt };
+      const id = this.getId();
+      const cssc = em && em.get('CssComposer');
       attr.attributes = { ...attr.attributes };
       delete attr.attributes.id;
       attr.components = [];
@@ -884,15 +885,20 @@ const Component = Backbone.Model.extend(Styleable).extend(
       attr.view = '';
       opts.collection = null;
 
-      if (em && em.getConfig('avoidInlineStyle') && !isEmpty(style)) {
-        attr.style = style;
-      }
-
       const cloned = new this.constructor(attr, opts);
       const event = 'component:clone';
       em && em.trigger(event, cloned);
       this.trigger(event, cloned);
 
+      // Clone component specific rules
+      const newId = `#${cloned.getId()}`;
+      const rulesToClone = cssc ? cssc.getRules(`#${id}`) : [];
+      rulesToClone.forEach(rule => {
+        const newRule = rule.clone();
+        newRule.set('selectors', [newId]);
+        cssc.getAll().add(newRule);
+      });
+
       return cloned;
     },