packages/wxc-tab-page/full-page.vue - incubator-weex-ui - Git at Google

 <!--
 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.
 -->
 <!-- Created by Tw93 on 17/07/28. -->
 <!-- Updated by Tw93 on 18/04/10. -->

 <template>
   <div class="wxc-tab-page"
        :style="{ height: (tabPageHeight)+'px' }">
     <div class="tab-page-wrap"
          ref="tab-page-wrap"
          :prevent-move-event="true"
          @horizontalpan="startHandler"
          :style="{ height: tabPageHeight+'px' }">
       <div ref="tab-container"
            class="tab-container">
         <slot></slot>
       </div>
     </div>
     <scroller class="tab-title-list"
               ref="tab-title-list"
               :show-scrollbar="false"
               scroll-direction="horizontal"
               :data-spm="spmC"
               :style="{ backgroundColor: tabStyles.bgColor, height: (tabStyles.height)+'px',top:tabStyles.top+'px' }">
       <div class="title-item"
            v-for="(v,index) in tabTitles"
            :key="index"
            :ref="'wxc-tab-title-'+index"
            @click="setPage(index,v.url)"
            :style="{ width: tabStyles.width +'px', height: tabStyles.height +'px', backgroundColor: currentPage == index ? tabStyles.activeBgColor : tabStyles.bgColor }"
            :accessible="true"
            :aria-label="`${v.title?v.title:'标签'+index}`">

         <image :src="currentPage == index ? v.activeIcon : v.icon"
                v-if="titleType == 'icon'"
                :style="{ width: tabStyles.iconWidth + 'px', height:tabStyles.iconHeight+'px'}"></image>

         <text
           :style="{ fontSize: tabStyles.fontSize+'px', fontWeight: (currentPage == index && tabStyles.isActiveTitleBold)? 'bold' : 'normal', color: currentPage == index ? tabStyles.activeTitleColor : tabStyles.titleColor, paddingLeft:(tabStyles.textPaddingLeft?tabStyles.textPaddingLeft:10)+'px', paddingRight:(tabStyles.textPaddingRight?tabStyles.textPaddingRight:10)+'px'}"
           class="tab-text">{{v.title}}</text>

         <div class="border-bottom"
              v-if="tabStyles.hasActiveBottom"
              :style="{ width: tabStyles.activeBottomWidth+'px', left: (tabStyles.width-tabStyles.activeBottomWidth)/2+'px', height: tabStyles.activeBottomHeight+'px', backgroundColor: currentPage == index ? tabStyles.activeBottomColor : 'transparent' }"></div>

       </div>
     </scroller>

   </div>
 </template>

 <style scoped>
   .wxc-tab-page {
     width: 750px;
     background-color: #f2f3f4;
   }

   .tab-title-list {
     width: 750px;
     position: absolute;
     flex-direction: row;
   }

   .title-item {
     justify-content: center;
     align-items: center;
     border-bottom-style: solid;
   }

   .border-bottom {
     position: absolute;
     bottom: 0;
   }

   .tab-page-wrap {
     width: 750px;
   }

   .tab-container {
     flex: 1;
     flex-direction: row;
     position: absolute;
   }

   .tab-text {
     lines: 1;
     text-overflow: ellipsis;
   }
 </style>

 <script>
   const dom = weex.requireModule('dom');
   const animation = weex.requireModule('animation');
   const swipeBack = weex.requireModule('swipeBack');
   const expressionBinding = weex.requireModule('expressionBinding');

   import Utils from '../utils';
   import BindEnv from '../utils/bind-env';
   import Binding from 'weex-bindingx/lib/index.weex.js';

   const isIos = Utils.env.isIOS();

   export default {
     props: {
       tabTitles: {
         type: Array,
         default: () => ([])
       },
       panDist: {
         type: Number,
         default: 200
       },
       spmC: {
         type: [String, Number],
         default: ''
       },
       tabStyles: {
         type: Object,
         default: () => ({
           titleColor: '#666666',
           activeTitleColor: '#3D3D3D',
           isActiveTitleBold: true,
           width: 160,
           height: 40,
           fontSize: 24,
           textPaddingLeft: 10,
           textPaddingRight: 10
         })
       },
       titleType: {
         type: String,
         default: 'icon'
       },
       tabPageHeight: {
         type: [String, Number],
         default: 1334
       },
       needSlider: {
         type: Boolean,
         default: true
       },
       duration: {
         type: [Number, String],
         default: 300
       },
       timingFunction: {
         type: String,
         default: 'cubic-bezier(0.25, 0.46, 0.45, 0.94)'
       }
     },
     data: () => ({
       currentPage: 0,
       isMoving: false,
       deltaX: 0
     }),
     mounted() {
       // ios 下面禁止左滑出去
       if (swipeBack && swipeBack.forbidSwipeBack) {
         swipeBack.forbidSwipeBack(true);
       }
       if (BindEnv.supportsEBForIos() && this.needSlider) {
         const tabPageEl = this.$refs['tab-page-wrap'];
         Binding.prepare && Binding.prepare({
           anchor: tabPageEl.ref,
           eventType: 'pan'
         });
       }
     },
     methods: {
       next() {
         let page = this.currentPage;
         if (page < this.tabTitles.length - 1) {
           page++;
         }
         this.setPage(page);
       },
       prev() {
         let page = this.currentPage;
         if (page > 0) {
           page--;
         }
         this.setPage(page);
       },
       startHandler(e) {
         if (BindEnv.supportsEBForIos() && this.isTabView && this.needSlider) {
           this.bindExp(this.$refs['tab-page-wrap']);
         }
       },
       bindExp(element) {
         if (element && element.ref) {

           if (this.isMoving && this.gesToken !== 0) {
             Binding.unbind({
               eventType: 'pan',
               token: this.gesToken
             })
             this.gesToken = 0;
             return;
           }

           const tabElement = this.$refs['tab-container'];
           const { currentPage, panDist } = this;
           const dist = currentPage * 750;

           // x-dist

           const props = [{
             element: tabElement.ref,
             property: 'transform.translateX',
             expression: `{\"type\":\"CallExpression\",\"children\":[{\"type\":\"Identifier\",\"value\":\"min\"},{\"type\":\"Arguments\",\"children\":[{\"type\":\"NumericLiteral\",\"value\":0},{\"type\":\"CallExpression\",\"children\":[{\"type\":\"Identifier\",\"value\":\"max\"},{\"type\":\"Arguments\",\"children\":[{\"type\":\"NumericLiteral\",\"value\":${-(tabTitles.length - 1) * 750}},{\"type\":\"-\",\"children\":[{\"type\":\"Identifier\",\"value\":\"x\"},{\"type\":\"NumericLiteral\",\"value\":${dist}}]}]}]}]}]}`
           }];

           const gesTokenObj = Binding.bind({
             anchor: element.ref,
             eventType: 'pan',
             props
           }, (e) => {
             const { deltaX, state } = e;
             if (state === 'end') {
               if (deltaX < -panDist) {
                 this.next();
               } else if (deltaX > panDist) {
                 this.prev();
               } else {
                 this.setPage(currentPage);
               }
             }
           });
           this.gesToken = gesTokenObj.token;
         }
       },
       setPage(page) {
         if (this.isMoving === true) {
           return;
         }
         this.isMoving = true;
         const previousPage = this.currentPage;
         const currentTabEl = this.$refs[`wxc-tab-title-${page}`][0];
         const { width } = this.tabStyles;
         const appearNum = parseInt(750 / width);
         const tabsNum = this.tabTitles.length;
         const computedPage = tabsNum > appearNum ? 2 : page
         const offset = page > appearNum ? -(750 - width) / 2 : -width * computedPage;

         (previousPage > appearNum || page > 1) && dom.scrollToElement(currentTabEl, {
           offset
         });

         page <= 1 && previousPage > page && dom.scrollToElement(currentTabEl, {
           offset: -width * page
         });
         this._animateTransformX(page);
         this.isMoving = false;
         this.currentPage = page;
         this.$emit('wxcTabPageCurrentTabSelected', { page });
       },
       _animateTransformX(page) {
         const { duration, timingFunction } = this;
         const containerEl = this.$refs[`tab-container`];
         const dist = page * 750;
         animation.transition(containerEl, {
           styles: {
             transform: `translateX(${-dist}px)`
           },
           duration,
           timingFunction,
           delay: 0
         }, () => {
         });
       }
     }
   };
 </script>
	<!--
	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.
	-->
	<!-- Created by Tw93 on 17/07/28. -->
	<!-- Updated by Tw93 on 18/04/10. -->

	<template>
	<div class="wxc-tab-page"
	:style="{ height: (tabPageHeight)+'px' }">
	<div class="tab-page-wrap"
	ref="tab-page-wrap"
	:prevent-move-event="true"
	@horizontalpan="startHandler"
	:style="{ height: tabPageHeight+'px' }">
	<div ref="tab-container"
	class="tab-container">
	<slot></slot>
	</div>
	</div>
	<scroller class="tab-title-list"
	ref="tab-title-list"
	:show-scrollbar="false"
	scroll-direction="horizontal"
	:data-spm="spmC"
	:style="{ backgroundColor: tabStyles.bgColor, height: (tabStyles.height)+'px',top:tabStyles.top+'px' }">
	<div class="title-item"
	v-for="(v,index) in tabTitles"
	:key="index"
	:ref="'wxc-tab-title-'+index"
	@click="setPage(index,v.url)"
	:style="{ width: tabStyles.width +'px', height: tabStyles.height +'px', backgroundColor: currentPage == index ? tabStyles.activeBgColor : tabStyles.bgColor }"
	:accessible="true"
	:aria-label="`${v.title?v.title:'标签'+index}`">

	<image :src="currentPage == index ? v.activeIcon : v.icon"
	v-if="titleType == 'icon'"
	:style="{ width: tabStyles.iconWidth + 'px', height:tabStyles.iconHeight+'px'}"></image>

	<text
	:style="{ fontSize: tabStyles.fontSize+'px', fontWeight: (currentPage == index && tabStyles.isActiveTitleBold)? 'bold' : 'normal', color: currentPage == index ? tabStyles.activeTitleColor : tabStyles.titleColor, paddingLeft:(tabStyles.textPaddingLeft?tabStyles.textPaddingLeft:10)+'px', paddingRight:(tabStyles.textPaddingRight?tabStyles.textPaddingRight:10)+'px'}"
	class="tab-text">{{v.title}}</text>

	<div class="border-bottom"
	v-if="tabStyles.hasActiveBottom"
	:style="{ width: tabStyles.activeBottomWidth+'px', left: (tabStyles.width-tabStyles.activeBottomWidth)/2+'px', height: tabStyles.activeBottomHeight+'px', backgroundColor: currentPage == index ? tabStyles.activeBottomColor : 'transparent' }"></div>

	</div>
	</scroller>

	</div>
	</template>

	<style scoped>
	.wxc-tab-page {
	width: 750px;
	background-color: #f2f3f4;
	}

	.tab-title-list {
	width: 750px;
	position: absolute;
	flex-direction: row;
	}

	.title-item {
	justify-content: center;
	align-items: center;
	border-bottom-style: solid;
	}

	.border-bottom {
	position: absolute;
	bottom: 0;
	}

	.tab-page-wrap {
	width: 750px;
	}

	.tab-container {
	flex: 1;
	flex-direction: row;
	position: absolute;
	}

	.tab-text {
	lines: 1;
	text-overflow: ellipsis;
	}
	</style>

	<script>
	const dom = weex.requireModule('dom');
	const animation = weex.requireModule('animation');
	const swipeBack = weex.requireModule('swipeBack');
	const expressionBinding = weex.requireModule('expressionBinding');

	import Utils from '../utils';
	import BindEnv from '../utils/bind-env';
	import Binding from 'weex-bindingx/lib/index.weex.js';

	const isIos = Utils.env.isIOS();

	export default {
	props: {
	tabTitles: {
	type: Array,
	default: () => ([])
	},
	panDist: {
	type: Number,
	default: 200
	},
	spmC: {
	type: [String, Number],
	default: ''
	},
	tabStyles: {
	type: Object,
	default: () => ({
	titleColor: '#666666',
	activeTitleColor: '#3D3D3D',
	isActiveTitleBold: true,
	width: 160,
	height: 40,
	fontSize: 24,
	textPaddingLeft: 10,
	textPaddingRight: 10
	})
	},
	titleType: {
	type: String,
	default: 'icon'
	},
	tabPageHeight: {
	type: [String, Number],
	default: 1334
	},
	needSlider: {
	type: Boolean,
	default: true
	},
	duration: {
	type: [Number, String],
	default: 300
	},
	timingFunction: {
	type: String,
	default: 'cubic-bezier(0.25, 0.46, 0.45, 0.94)'
	}
	},
	data: () => ({
	currentPage: 0,
	isMoving: false,
	deltaX: 0
	}),
	mounted() {
	// ios 下面禁止左滑出去
	if (swipeBack && swipeBack.forbidSwipeBack) {
	swipeBack.forbidSwipeBack(true);
	}
	if (BindEnv.supportsEBForIos() && this.needSlider) {
	const tabPageEl = this.$refs['tab-page-wrap'];
	Binding.prepare && Binding.prepare({
	anchor: tabPageEl.ref,
	eventType: 'pan'
	});
	}
	},
	methods: {
	next() {
	let page = this.currentPage;
	if (page < this.tabTitles.length - 1) {
	page++;
	}
	this.setPage(page);
	},
	prev() {
	let page = this.currentPage;
	if (page > 0) {
	page--;
	}
	this.setPage(page);
	},
	startHandler(e) {
	if (BindEnv.supportsEBForIos() && this.isTabView && this.needSlider) {
	this.bindExp(this.$refs['tab-page-wrap']);
	}
	},
	bindExp(element) {
	if (element && element.ref) {

	if (this.isMoving && this.gesToken !== 0) {
	Binding.unbind({
	eventType: 'pan',
	token: this.gesToken
	})
	this.gesToken = 0;
	return;
	}

	const tabElement = this.$refs['tab-container'];
	const { currentPage, panDist } = this;
	const dist = currentPage * 750;

	// x-dist

	const props = [{
	element: tabElement.ref,
	property: 'transform.translateX',
	expression: `{\"type\":\"CallExpression\",\"children\":[{\"type\":\"Identifier\",\"value\":\"min\"},{\"type\":\"Arguments\",\"children\":[{\"type\":\"NumericLiteral\",\"value\":0},{\"type\":\"CallExpression\",\"children\":[{\"type\":\"Identifier\",\"value\":\"max\"},{\"type\":\"Arguments\",\"children\":[{\"type\":\"NumericLiteral\",\"value\":${-(tabTitles.length - 1) * 750}},{\"type\":\"-\",\"children\":[{\"type\":\"Identifier\",\"value\":\"x\"},{\"type\":\"NumericLiteral\",\"value\":${dist}}]}]}]}]}]}`
	}];

	const gesTokenObj = Binding.bind({
	anchor: element.ref,
	eventType: 'pan',
	props
	}, (e) => {
	const { deltaX, state } = e;
	if (state === 'end') {
	if (deltaX < -panDist) {
	this.next();
	} else if (deltaX > panDist) {
	this.prev();
	} else {
	this.setPage(currentPage);
	}
	}
	});
	this.gesToken = gesTokenObj.token;
	}
	},
	setPage(page) {
	if (this.isMoving === true) {
	return;
	}
	this.isMoving = true;
	const previousPage = this.currentPage;
	const currentTabEl = this.$refs[`wxc-tab-title-${page}`][0];
	const { width } = this.tabStyles;
	const appearNum = parseInt(750 / width);
	const tabsNum = this.tabTitles.length;
	const computedPage = tabsNum > appearNum ? 2 : page
	const offset = page > appearNum ? -(750 - width) / 2 : -width * computedPage;

	(previousPage > appearNum \|\| page > 1) && dom.scrollToElement(currentTabEl, {
	offset
	});

	page <= 1 && previousPage > page && dom.scrollToElement(currentTabEl, {
	offset: -width * page
	});
	this._animateTransformX(page);
	this.isMoving = false;
	this.currentPage = page;
	this.$emit('wxcTabPageCurrentTabSelected', { page });
	},
	_animateTransformX(page) {
	const { duration, timingFunction } = this;
	const containerEl = this.$refs[`tab-container`];
	const dist = page * 750;
	animation.transition(containerEl, {
	styles: {
	transform: `translateX(${-dist}px)`
	},
	duration,
	timingFunction,
	delay: 0
	}, () => {
	});
	}
	}
	};
	</script>