add: uni.setLeft|Right|TopWindowStyle api

lib/apis.js

@@ -174,6 +174,9 @@ const ui = [
   'hideTopWindow',
   'hideLeftWindow',
   'hideRightWindow',
+  'getTopWindowStyle',
+  'getLeftWindowStyle',
+  'getRightWindowStyle',
   'setTopWindowStyle',
   'setLeftWindowStyle',
   'setRightWindowStyle'

src/core/helpers/promise.js

@@ -8,7 +8,7 @@ import {
 } from './interceptor'
 
 const SYNC_API_RE =
-  /^\$|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/
+  /^\$|Window$|WindowStyle$|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/
 
 const CONTEXT_API_RE = /^create|Manager$/
 

src/platforms/h5/components/app/layout.vue

@@ -274,6 +274,13 @@ export default {
         }
       }
     },
+    getWindowStyle (type) {
+      if (!this[type + 'Window']) {
+        return type + 'Window not found'
+      }
+      const style = Object.assign({}, this[type + 'WindowStyle'])
+      return style
+    },
     setWindowStyle (type, style) {
       if (!this[type + 'Window']) {
         return type + 'Window not found'

src/platforms/h5/service/api/ui/windows.js

@@ -42,6 +42,33 @@ export function hideRightWindow () {
   return showWindow('right', false)
 }
 
+function getWindowStyle (type) {
+  const api = 'get' + capitalize(type) + 'WindowStyle'
+  const app = getApp()
+  if (!app) {
+    return {
+      errMsg: `${api}:fail app not ready`
+    }
+  }
+  const msg = app.$children[0].$refs.layout.getWindowStyle(type)
+  if (typeof msg === 'string' && msg.indexOf('Window not found') !== -1) {
+    return {
+      errMsg: `${api}:fail ${msg}`
+    }
+  }
+  return msg
+}
+
+export function getTopWindowStyle (style) {
+  return getWindowStyle('top')
+}
+export function getLeftWindowStyle (style) {
+  return getWindowStyle('left')
+}
+export function getRightWindowStyle (style) {
+  return getWindowStyle('right')
+}
+
 function setWindowStyle (type, style) {
   const api = 'set' + capitalize(type) + 'WindowStyle'
   const app = getApp()