| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 { |
| getHeadStyleMap, |
| getComponentStyle, |
| extractComponentStyle |
| } from '../core' |
| |
| import { |
| normalizeStyle, |
| camelizeKeys, |
| extend |
| } from '../utils' |
| |
| /** |
| * get a beforeCreate hook, which has a mark to identify the hook function itself. |
| */ |
| function getIdentifiedBeforeCreate () { |
| const disposed = {} // disposed components. Already scanned. |
| function beforeCreate () { |
| /** |
| * get static class style map from document's styleSheets. |
| * Weex.on will create a Vue instance. In this case we'll ignore it, since |
| * it's not sure whether the scoped style has already attached to head or not. |
| */ |
| const tagName = this.$options && this.$options._componentTag |
| /** |
| * For vue-loader ^11.3.x, there's no injectStyle function. The styleSheet |
| * is already injected into the head. Just scan it. |
| */ |
| // async component. |
| if ((this.$vnode && this.$vnode.data && this.$vnode.data.tag === 'component') |
| || (this === this.$root && this.$options && !this._firstScanned)) { |
| this._firstScanned = true |
| extend(weex._styleMap, getHeadStyleMap()) |
| } |
| /** |
| * For vue-loader ^12.0, the injectStyle function is hooked. We should scan |
| * style map after the injectStyle hook called. |
| */ |
| if (((this === this.$root && this.$options) |
| || (tagName |
| && !weex._components[tagName] |
| && !disposed[tagName])) |
| && !this._secondScanned) { |
| disposed[tagName] = 1 |
| this._secondScanned = true |
| const hooks = this.$options.beforeCreate |
| const len = hooks.length |
| let thisHookIdx = 0 // index of this hook in the hooks array. |
| for (; thisHookIdx < len; thisHookIdx++) { |
| if (hooks[thisHookIdx]._styleMixin) { break } |
| } |
| if (thisHookIdx !== len - 1) { |
| const func = hooks[len - 1] |
| hooks[len - 1] = function () { |
| // call the original injectStyle hook. |
| func.call(this) |
| // scan the new appended styleSheet. |
| extend(weex._styleMap, getHeadStyleMap()) |
| hooks[len - 1] = func |
| } |
| } |
| } |
| } |
| beforeCreate._styleMixin = true |
| return beforeCreate |
| } |
| |
| export default { |
| beforeCreate: getIdentifiedBeforeCreate(), |
| |
| methods: { |
| $processStyle (style) { |
| window._style_processing_added = true |
| if (!style) { |
| return |
| } |
| return normalizeStyle(camelizeKeys(style)) |
| }, |
| |
| _extractComponentStyle () { |
| return extractComponentStyle(this) |
| }, |
| |
| /** |
| * get style from class, staticClass, style and staticStyle. |
| * merge styles priority: high -> low |
| * 1. data.style (bound style). |
| * 2. data.staticStyle (inline styles). |
| * 3. data.class style (bound class names). |
| * 4. data.staticClass style (scoped styles or static classes). |
| */ |
| _getComponentStyle (data) { |
| return getComponentStyle(this) |
| }, |
| |
| _getParentRect () { |
| const parentElm = this.$options._parentElm |
| return parentElm && parentElm.getBoundingClientRect() |
| } |
| } |
| } |