Implemented context menu action registry

src/api/contextMenu/ContextMenuRegistry.js

@@ -0,0 +1,75 @@
+import ContextMenuComponent from '../../ui/components/controls/ContextMenu.vue';
+import Vue from 'vue';
+
+class ContextMenuRegistry {
+    constructor() {
+        this._allActions = [];
+        this._activeContextMenu = undefined;
+
+        this._hideActiveContextMenu = this._hideActiveContextMenu.bind(this);
+    }
+
+    registerAction(actionDefinition) {
+        this._allActions.push(actionDefinition);
+    }
+
+    attachTo(targetElement, objectPath) {
+        let showContextMenu = (event) => {
+            this._showContextMenuForObjectPath(event, objectPath);
+        };
+
+        targetElement.addEventListener('contextmenu', showContextMenu);
+
+        return function detach() {
+            targetElement.removeEventListener('contextMenu', showContextMenu);
+        }
+    }
+
+    /**
+     * @private
+     */
+    _showContextMenuForObjectPath(event, objectPath) {
+        let applicableActions = this._allActions.filter(
+            (action) => action.appliesTo(objectPath));
+
+        event.preventDefault();
+
+        if (this._activeContextMenu) {
+            this._hideActiveContextMenu();
+        }
+
+        this._activeContextMenu = this._createContextMenuFromActions(applicableActions);
+        this._activeContextMenu.$mount();
+        this._activeContextMenu.$el.style.left = `${event.clientX}px`;
+        this._activeContextMenu.$el.style.top = `${event.clientY}px`;
+
+        document.body.appendChild(this._activeContextMenu.$el);
+        document.addEventListener('click', this._hideActiveContextMenu);
+    }
+
+    /**
+     * @private
+     */
+    _hideActiveContextMenu() {
+        document.removeEventListener('click', this._hideActiveContextMenu);
+        document.body.removeChild(this._activeContextMenu.$el);
+        this._activeContextMenu.$destroy();
+        this._activeContextMenu = undefined;
+    }
+
+    /**
+     * @private
+     */
+    _createContextMenuFromActions(actions) {
+        return new Vue({
+            components: {
+                ContextMenu: ContextMenuComponent
+            },
+            provide: {
+                actions: actions
+            },
+            template: '<ContextMenu></ContextMenu>'
+        });
+    }
+}
+export default ContextMenuRegistry;