add draggable in js & android

doric-js/src/widget/draggable.ts

@@ -0,0 +1,39 @@
+/*
+ * Copyright [2019] [Doric.Pub]
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Property, View } from "../ui/view"
+import { IStack, Stack } from "../widget/layouts"
+import { layoutConfig } from "../util/layoutconfig"
+
+export interface IDraggable extends IStack {
+    onDrag?: (x: number, y: number) => void
+}
+
+export class Draggable extends Stack implements IDraggable {
+    @Property
+    onDrag?: (x: number, y: number) => void
+}
+
+export function draggable(config: IDraggable, views: View[]) {
+    const ret = new Draggable
+    ret.layoutConfig = layoutConfig().fit()
+    for (let key in config) {
+        Reflect.set(ret, key, Reflect.get(config, key, config), ret)
+    }
+    for (let v of views) {
+        ret.addChild(v)
+    }
+    return ret
+}

doric-js/src/widget/index.widget.ts

@@ -22,4 +22,5 @@ export * from './scroller'
 export * from './refreshable'
 export * from './flowlayout'
 export * from './input'
-export * from './nestedSlider'
+export * from './nestedSlider'
+export * from './draggable'