chore(plugin): modify plugin methods

plugins/base.js

@@ -9,7 +9,7 @@ class PluginBase {
   getDefaultCfg() {
     return {};
   }
-  _init(graph) {
+  initPlugin(graph) {
     const self = this;
     self.set('graph', graph);
     const events = self.getEvents();
@@ -32,7 +32,9 @@ class PluginBase {
   set(key, val) {
     this._cfgs[key] = val;
   }
-  destroy() {
+  destroy() {}
+  destroyPlugin() {
+    this.destroy();
     const graph = this.get('graph');
     const events = this._events;
     each(events, (v, k) => {

plugins/grid/index.js

@@ -48,7 +48,6 @@ class Grid extends Base {
   destroy() {
     const graphContainer = this.get('graph').get('container');
     graphContainer.removeChild(this.get('container'));
-    super.destroy();
   }
 }
 

plugins/minimap/index.js

@@ -286,7 +286,6 @@ class Minimap extends Base {
     const container = this.get('canvas');
     this.get('canvas').destroy();
     container.innerHTML = '';
-    super.destroy();
   }
 }
 

src/graph/graph.js

@@ -224,8 +224,8 @@ class Graph extends EventEmitter {
   _initPlugins() {
     const self = this;
     Util.each(self.get('plugins'), plugin => {
-      if (!plugin.destroyed && plugin._init) {
-        plugin._init(self);
+      if (!plugin.destroyed && plugin.initPlugin) {
+        plugin.initPlugin(self);
       }
     });
   }
@@ -926,7 +926,7 @@ class Graph extends EventEmitter {
   destroy() {
     this.clear();
     Util.each(this.get('plugins'), plugin => {
-      plugin.destroy();
+      plugin.destroyPlugin();
     });
     this.get('eventController').destroy();
     this.get('itemController').destroy();

test/unit/graph/graph-spec.js

@@ -548,7 +548,7 @@ describe('all node link center', () => {
     expect(graph.get('plugins').length).to.equal(1);
     graph.emit('event');
     expect(count).to.equal(1);
-    plugin.destroy();
+    plugin.destroyPlugin();
     graph.emit('event');
     expect(count).to.equal(1);
   });

test/unit/plugins/minimap-spec.js

@@ -49,7 +49,7 @@ describe('minimap', () => {
     expect(viewport.style.top).to.equal('20px');
     expect(viewport.style.width).to.equal('160px');
     expect(viewport.style.height).to.equal('160px');
-    minimap.destroy();
+    minimap.destroyPlugin();
     const container = div.childNodes[1];
     expect(container.innerHTML).to.equal('');
     graph.zoom(2.5, { x: 250, y: 250 });