Vue状态模式实现窗口停靠功能(灵动、自由,管理后台Admin界面)

class State{

constructor(context){ this.cOntext= context

}

widthChange(width){ if(width <=90){ this.toState(this.context.miniState)

} else if(width <=160){ this.toState(this.context.middleState)
} else{ this.toState(this.context.normalState)
}
}

showTabBody(){ return true }

showTabTitle(){ return false }

showIcon(){ return false }

showTitle(){ return true }

close(){}

toState(state){ if(this.context.state !== state){ if(this.context.state === this.context.normalState){ this.context.selectedTab.isShow = false console.log('dddd')

} if(state === this.context.normalState){ this.context.selectedTab.isShow = true } this.context.state = state
}
}

stateClass(){ return '' }

}

class NormalState extends State{

constructor(context){

super(context)
}

clickTab(clickedTab){ this.context.tabs.forEach(tab => {

tab.isShow \= (tab.name == clickedTab.name) this.context.selectedTab = clickedTab
});
}

} //需要弹出式显示标签内容

class ListState extends State{

constructor(context){

super(context)
}

showTabBody(){ return this.context.selectedTab.isShow

}

showTabTitle(){ return true }

showIcon(){ return true }

showTitle(){ return true }

close(){ this.context.selectedTab.isShow = false }

clickTab(clickedTab){ this.context.tabs.forEach(tab => { if(tab === clickedTab){

tab.isShow \= !tab.isShow this.context.selectedTab = clickedTab
 } else{
 tab.isShow \= false }
});
}

} //该状态显示图标跟标题

class MiddleState extends ListState{

constructor(context){

super(context)
}

stateClass(){ return 'middle-size' }

} //该状态只显示图标

class MiniState extends ListState{

constructor(context){

super(context)
}

showTitle(){ return false }

stateClass(){ return 'mini-size' }

}

export default {

name: 'WidgetTabs',

data() { return {

tabs: \[\],
 state: null,
 selectedTab :null,
 dockLeft:false,
}
},

created() { this.tabs = this.$children; this.normalState = new NormalState(this) this.middleState = new MiddleState(this) this.miniState = new MiniState(this) this.state = this.normalState

},

computed: {

stateClass(){ return this.state.stateClass()
},

showIcon(){ return this.state.showIcon()
},

showTitle(){ return this.state.showTitle()
},

showTabBody(){ return this.state.showTabBody()
},
showTabTitle(){ return this.state.showTabTitle()
},
},

methods: {

click(clickTab) { this.state.clickTab(clickTab)
},

mouseMove(){ if(this.$refs.widget){ this.dockLeft = this.$refs.widget.offsetLeft <50
 this.state.widthChange(this.$refs.widget.offsetWidth)
 }
},

mouseDown(event){
 document.addEventListener('mousemove', this.mouseMove)
},

mouseUp(event){
 document.removeEventListener('mousemove', this.mouseMove)
},

close(){ this.state.close()
}
},

mounted () {

document.addEventListener('mousedown', this.mouseDown)
document.addEventListener('mouseup', this.mouseUp) this.tabs.forEach(tab => { if(tab.isShow){ this.selectedTab = tab
 }
});
},

beforeDestroyed() {

document.removeEventListener('mousedown', this.mouseDown)
document.removeEventListener('mouseup', this.mouseUp)
},

}