Generalized isActive Property to all tools

editor/js/tools/deletetool.js

@@ -19,14 +19,6 @@ export default class DeleteTool extends Tool {
         }
     }
 
-    onToolActivate() {
-        this.isActive = true;
-    }
-
-    onToolDeactivate(nextTool) {
-        this.isActive = false;
-    }
-
     onBoxSelect(left, bottom, top, right) {
         // Filter out selected nodes
         const hitNodes = [];

editor/js/tools/tool.js

@@ -6,6 +6,7 @@ export default class Tool {
         this.warnings = false;
         this.menu = menu;
         this.toggleBehaviour = toggleBehaviour;
+        this.isActive = false;
 
         if (this.menu !== undefined) {
             this.menu.loadTool(this);
@@ -31,6 +32,7 @@ export default class Tool {
     }
 
     activateTool() {
+        this.isActive = true;
         if (this.menu !== undefined) {
             this.menu.show();
         }
@@ -39,6 +41,7 @@ export default class Tool {
     }
 
     deactivateTool(nextTool) {
+        this.isActive = false;
         this.onToolDeactivate(nextTool);
 
         if (this.menu !== undefined) {