我怎么可以刷卡左右我离子项目列表 [英] How can i swipe left-right my ionic item list
本文介绍了我怎么可以刷卡左右我离子项目列表的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想我刷卡离子列表项到两侧。 （即左，右，右 - 左）。它完美地工作了右向左轻扫，但我不能够进入我的列表项轻扫到左侧。
I want to swipe my ionic list items to both side. (i.e left-right AND right-left). It work perfectly for right-left swipe but i am not able to swipe my list item to left side.
我用$ ionicGesture左，右轻扫，同时也给我警惕当我使用swiperight事件（$ ionicGesture.on（'swiperight'，scope.reportEvent，ELEM））。但我不能够在左侧显示的离子选项按钮。
I used $ionicGesture for left-right swipe, and it also give me alert when i use swiperight event($ionicGesture.on('swiperight', scope.reportEvent, elem)). but i am not able to show the ion-option-button at the left side.
下面是我的指令，并控制code： -
Here is my directive and controller code:-
.directive('onSwipeRight', function($ionicGesture) {
return {
restrict : 'A',
link : function(scope, elem, attrs) {
var gestureType = attrs.gestureType;
switch(gestureType) {
case 'swipeRight':
$ionicGesture.on('swiperight', scope.reportEvent, elem);
break;
case 'swipeleft':
$ionicGesture.on('swipeleft', scope.reportEvent, elem);
break;
case 'doubletap':
$ionicGesture.on('doubletap', scope.reportEvent, elem);
break;
case 'tap':
$ionicGesture.on('tap', scope.reportEvent, elem);
break;
}
}
}
})
.controller('ChatsCtrl', function($scope, Chats) {
// With the new view caching in Ionic, Controllers are only called
// when they are recreated or on app start, instead of every page change.
// To listen for when this page is active (for example, to refresh data),
// listen for the $ionicView.enter event:
//
//$scope.$on('$ionicView.enter', function(e) {
//});
$scope.chats = Chats.all();
$scope.remove = function(chat) {
Chats.remove(chat);
}
$scope.reportEvent = function (event) {
alert("hi");
console.log('Reporting : ' + event.type);
event.preventDefault();
};
})
下面是我的html code。
Here is my html code.
<ion-view view-title="Chats">
<ion-content>
<ion-list can-swipe="true">
<ion-item gesture-type="swipeRight" on-swipe-right="swipeRight()" class="item-remove-animate item-avatar item-icon-right" ng-repeat="chat in chats" type="item-text-wrap" href="#/tab/chats/{{chat.id}}">
<img ng-src="{{chat.face}}">
<h2>{{chat.name}}</h2>
<p>{{chat.lastText}}</p>
<i class="icon ion-chevron-right icon-accessory"></i>
<ion-option-button class="button-assertive" ng-click="share(item)" side="left">
Share
</ion-option-button>
<ion-option-button class="button-assertive" ng-click="remove(chat)" side="right">
Delete
</ion-option-button>
</ion-item>
</ion-list>
</ion-content>
</ion-view>
所以，我想在左边显示分享按钮，在右侧的删除按钮。
So i want to display share button at left side and delete button at right side.
任何人可以给我提供具体的解决方案吧。
Can anybody provide me specific solution for it.
感谢。
推荐答案
我已经编辑离子lib中做类似的东西。但我不能做的jsfiddle或code笔我给你链接到我的修改ionic.css和ionic.bundle.js！
I've edited ionic lib to do something like that. But i couldn't do a JSFiddle or a Code Pen i Will give you the link to my modified ionic.css and ionic.bundle.js!
TL; DR
<一个href=\"https://gist.githubusercontent.com/booris/847f044d2ef2a05101ce/raw/2274365384f5eed3e4538b269f3a7d7998eb22ed/ionic.css\" rel=\"nofollow\">https://gist.githubusercontent.com/booris/847f044d2ef2a05101ce/raw/2274365384f5eed3e4538b269f3a7d7998eb22ed/ionic.css
<一个href=\"https://gist.githubusercontent.com/booris/847f044d2ef2a05101ce/raw/2274365384f5eed3e4538b269f3a7d7998eb22ed/ionic.bundle.js\" rel=\"nofollow\">https://gist.githubusercontent.com/booris/847f044d2ef2a05101ce/raw/2274365384f5eed3e4538b269f3a7d7998eb22ed/ionic.bundle.js
只是你替换它，启动离子项目的空白。并把这个HTML中的：
Just replace it with yours, start an ionic project blank. And put this HTML in it:
<body ng-app="starter">
<ion-pane>
<ion-header-bar class="bar-stable">
<h1 class="title">Ionic Blank Starter</h1>
</ion-header-bar>
<ion-content>
<ion-list show-delete="false" can-swipe="true" swipe-direction="both">
<ion-item href="#">
Item 1
<ion-option-button side="right" class="button-light icon ion-heart"></ion-option-button>
<ion-option-button side="right" class="button-light icon ion-email"></ion-option-button>
<ion-option-button side="left" class="button-assertive icon ion-trash-a"></ion-option-button>
</ion-item>
<ion-item href="#">
Item 2
<ion-option-button class="button-light icon ion-heart"></ion-option-button>
<ion-option-button class="button-light icon ion-email"></ion-option-button>
<ion-option-button class="button-assertive icon ion-trash-a"></ion-option-button>
</ion-item>
</ion-list>
</ion-content>
</ion-pane>
</body>
您可以用左，右或两者指定擦拭方向。
而在离子选项按钮，你可以给它一个侧面。
You can specify the wipe direction with left, right or both. And in the ion-options-button you can give it a side.
希望它能帮助，任何事情你只需要问！我会尽量后来我的评论在code的变化！
Hope it helps, anything you need just ask! I will try to comment my changes in the code later on!
编辑：
我会尽量解释什么，我做到了。
I will try to explain what i did.
首先改变ionOptionButton指令来创造的div按钮，一左一个正确
First change the ionOptionButton directive to create to div for the button, one left and one right
//added second div with class item-options-left for the left buttons
var ITEM_TPL_OPTION_BUTTONS =
'<div class="item-options invisible">' +
'</div>' + '<div class="item-options-left invisible">' +
'</div>';
IonicModule.directive('ionOptionButton', [function () {
function stopPropagation(e) {
e.stopPropagation();
}
return {
restrict: 'E',
require: '^ionItem',
priority: Number.MAX_VALUE,
compile: function ($element, $attr) {
$attr.$set('class', ($attr['class'] || '') + ' button', true);
return function ($scope, $element, $attr, itemCtrl) {
if (!itemCtrl.optionsContainer) {
itemCtrl.optionsContainer = jqLite(ITEM_TPL_OPTION_BUTTONS);
itemCtrl.$element.append(itemCtrl.optionsContainer);
}
//[NEW] if it as an attribute side = 'left' put the button in the left container
if ($attr.side === 'left') {
angular.element(itemCtrl.optionsContainer[1]).append($element);
itemCtrl.$element.addClass('item-left-editable');
} else{
angular.element(itemCtrl.optionsContainer[0]).append($element);
itemCtrl.$element.addClass('item-right-editable');
}
//Don't bubble click up to main .item
$element.on('click', stopPropagation);
};
}
};
}]);
添加CSS向左按钮ionic.css文件
Add CSS to left buttons in ionic.css file
item-options-left {
position: absolute;
top: 0;
left: 0;
z-index: 1;
height: 100%; }
.item-options-left .button {
height: 100%;
border: none;
border-radius: 0;
display: -webkit-inline-box;
display: -webkit-inline-flex;
display: -moz-inline-flex;
display: -ms-inline-flexbox;
display: inline-flex;
-webkit-box-align: center;
-ms-flex-align: center;
-webkit-align-items: center;
-moz-align-items: center;
align-items: center; }
.item-options .button:before {
margin: 0 auto; }
现在改变离子列表控制器接受刷卡的方向属性。
Now change the ion-list controller to accept swipe directions attribute
.controller('$ionicList', [
'$scope',
'$attrs',
'$ionicListDelegate',
'$ionicHistory',
function ($scope, $attrs, $ionicListDelegate, $ionicHistory) {
var self = this;
//[NEW] object with can-swipe attr and swipe-direction side attr, default direction is left
var swipe = {
isSwipeable: true,
side: 'left'
};
var isReorderShown = false;
var isDeleteShown = false;
var deregisterInstance = $ionicListDelegate._registerInstance(
self, $attrs.delegateHandle,
function () {
return $ionicHistory.isActiveScope($scope);
}
);
$scope.$on('$destroy', deregisterInstance);
self.showReorder = function (show) {
if (arguments.length) {
isReorderShown = !!show;
}
return isReorderShown;
};
self.showDelete = function (show) {
if (arguments.length) {
isDeleteShown = !!show;
}
return isDeleteShown;
};
//[NEW] get swipe direction attribute and store it in a variable to access in other function
self.canSwipeItems = function (can) {
if (arguments.length) {
swipe.isSwipeable = !!can;
swipe.side = $attrs.swipeDirection;
}
return swipe;
};
self.closeOptionButtons = function () {
self.listView && self.listView.clearDragEffects();
};
}]);
要结束时，你应该与这一个替换slideDrag功能，只需搜索它在ionic.bundle.js
To end, you should replace slideDrag function with this one, just search for it in ionic.bundle.js
//[NEW] add this var to the others in the function
var ITEM_OPTIONS_CLASS_RIGHT = 'item-options-left';
var SlideDrag = function (opts) {
this.dragThresholdX = opts.dragThresholdX || 10;
this.el = opts.el;
this.item = opts.item;
this.canSwipe = opts.canSwipe;
};
SlideDrag.prototype = new DragOp();
SlideDrag.prototype.start = function (e) {
var content, buttonsLeft, buttonsRight, offsetX, buttonsLeftWidth, buttonsRightWidth;
if (!this.canSwipe().isSwipeable) {
return;
}
if (e.target.classList.contains(ITEM_CONTENT_CLASS)) {
content = e.target;
} else if (e.target.classList.contains(ITEM_CLASS)) {
content = e.target.querySelector('.' + ITEM_CONTENT_CLASS);
} else {
content = ionic.DomUtil.getParentWithClass(e.target, ITEM_CONTENT_CLASS);
}
// If we don't have a content area as one of our children (or ourselves), skip
if (!content) {
return;
}
// Make sure we aren't animating as we slide
content.classList.remove(ITEM_SLIDING_CLASS);
// Grab the starting X point for the item (for example, so we can tell whether it is open or closed to start)
offsetX = parseFloat(content.style[ionic.CSS.TRANSFORM].replace('translate3d(', '').split(',')[0]) || 0;
// Grab the buttons
buttonsLeft = content.parentNode.querySelector('.' + ITEM_OPTIONS_CLASS);
if (!buttonsLeft) {
return;
}
//[NEW] get the Right buttons
buttonsRight = content.parentNode.querySelector('.' + ITEM_OPTIONS_CLASS_RIGHT);
if (!buttonsRight) {
return;
}
[NEW] added the same functionality to both sides, to make buttons visible when dragged
if(e.gesture.direction === "left")
buttonsLeft.classList.remove('invisible');
else
buttonsRight.classList.remove('invisible');
//[NEW] added buttonRight and buttonLeft properties to currentDrag
buttonsLeftWidth = buttonsLeft.offsetWidth;
buttonsRightWidth = buttonsRight.offsetWidth;
this._currentDrag = {
buttonsLeft: buttonsLeft,
buttonsRight: buttonsRight,
buttonsLeftWidth: buttonsLeftWidth,
buttonsRightWidth: buttonsRightWidth,
content: content,
startOffsetX: offsetX
};
};
/**
* Check if this is the same item that was previously dragged.
*/
SlideDrag.prototype.isSameItem = function (op) {
if (op._lastDrag && this._currentDrag) {
return this._currentDrag.content == op._lastDrag.content;
}
return false;
};
SlideDrag.prototype.clean = function (isInstant) {
var lastDrag = this._lastDrag;
if (!lastDrag || !lastDrag.content) return;
lastDrag.content.style[ionic.CSS.TRANSITION] = '';
lastDrag.content.style[ionic.CSS.TRANSFORM] = '';
if (isInstant) {
lastDrag.content.style[ionic.CSS.TRANSITION] = 'none';
makeInvisible();
ionic.requestAnimationFrame(function () {
lastDrag.content.style[ionic.CSS.TRANSITION] = '';
});
} else {
ionic.requestAnimationFrame(function () {
setTimeout(makeInvisible, 250);
});
}
function makeInvisible() {
lastDrag.buttonsLeft && lastDrag.buttonsLeft.classList.add('invisible');
lastDrag.buttonsRight && lastDrag.buttonsRight.classList.add('invisible');
}
};
SlideDrag.prototype.drag = ionic.animationFrameThrottle(function (e) {
var buttonsLeftWidth;
var buttonsRightWidth;
// We really aren't dragging
if (!this._currentDrag) {
return;
}
// Check if we should start dragging. Check if we've dragged past the threshold,
// or we are starting from the open state.
if (!this._isDragging &&
((Math.abs(e.gesture.deltaX) > this.dragThresholdX) ||
(Math.abs(this._currentDrag.startOffsetX) > 0))) {
this._isDragging = true;
}
if (this._isDragging) {
buttonsLeftWidth = this._currentDrag.buttonsLeftWidth;
buttonsRightWidth = this._currentDrag.buttonsRightWidth;
// Grab the new X point, capping it at zero
//[NEW] added right swipe new position
if (this.canSwipe().side === 'left' || (this.canSwipe().side === 'both' && e.gesture.direction === 'left'))
var newX = Math.min(0, this._currentDrag.startOffsetX + e.gesture.deltaX);
else if (this.canSwipe().side === 'right' || (this.canSwipe().side === 'both' && e.gesture.direction === 'right'))
var newX = Math.max(0, this._currentDrag.startOffsetX + e.gesture.deltaX);
var buttonsWidth = 0;
if (e.gesture.direction === 'right')
buttonsWidth = buttonsRightWidth;
else
buttonsWidth = buttonsLeftWidth;
// If the new X position is past the buttons, we need to slow down the drag (rubber band style)
if (newX < -buttonsWidth) {
// Calculate the new X position, capped at the top of the buttons
newX = Math.min(-buttonsWidth, -buttonsWidth + (((e.gesture.deltaX + buttonsWidth) * 0.4)));
}
this._currentDrag.content.$$ionicOptionsOpen = newX !== 0;
this._currentDrag.content.style[ionic.CSS.TRANSFORM] = 'translate3d(' + newX + 'px, 0, 0)';
this._currentDrag.content.style[ionic.CSS.TRANSITION] = 'none';
}
});
SlideDrag.prototype.end = function (e, doneCallback) {
var self = this;
// There is no drag, just end immediately
if (!self._currentDrag) {
doneCallback && doneCallback();
return;
}
// If we are currently dragging, we want to snap back into place
// The final resting point X will be the width of the exposed buttons
var restingPoint;
if (e.gesture.direction === 'left' && (this.canSwipe().side === 'left' || this.canSwipe().side === 'both'))
restingPoint = -self._currentDrag.buttonsLeftWidth;
if (e.gesture.direction === 'right' && (this.canSwipe().side === 'right' || this.canSwipe().side === 'both'))
restingPoint = self._currentDrag.buttonsRightWidth;
// Check if the drag didn't clear the buttons mid-point
// and we aren't moving fast enough to swipe open
var buttonsWidth = 0;
if (e.gesture.direction === 'right')
buttonsWidth = self._currentDrag.buttonsRightWidth;
else
buttonsWidth = self._currentDrag.buttonsLeftWidth;
if (e.gesture.deltaX > -(buttonsWidth / 2)) {
// If we are going left or right but too slow, or going right, go back to resting
if ((e.gesture.direction == "left" || e.gesture.direction == "right") && Math.abs(e.gesture.velocityX) < 0.3) {
restingPoint = 0;
}
}
ionic.requestAnimationFrame(function () {
if (restingPoint === 0) {
self._currentDrag.content.style[ionic.CSS.TRANSFORM] = '';
var buttonsLeft = self._currentDrag.buttonsLeft;
var buttonsRight = self._currentDrag.buttonsRight;
setTimeout(function () {
buttonsLeft && buttonsLeft.classList.add('invisible');
buttonsRight && buttonsRight.classList.add('invisible');
}, 250);
} else {
self._currentDrag.content.style[ionic.CSS.TRANSFORM] = 'translate3d(' + restingPoint + 'px,0,0)';
}
self._currentDrag.content.style[ionic.CSS.TRANSITION] = '';
// Kill the current drag
if (!self._lastDrag) {
self._lastDrag = {};
}
ionic.extend(self._lastDrag, self._currentDrag);
if (self._currentDrag) {
self._currentDrag.buttons = null;
self._currentDrag.content = null;
}
self._currentDrag = null;
// We are done, notify caller
doneCallback && doneCallback();
});
};
我的方案并不完美，但它的作品。并且有这样做的其他方式，我做到了这种方式更好地了解离子是如何工作以及如何他们做离子指令。
My solution is not perfect, but it works. and there are others ways of doing this, i did it this way to understand better how Ionic works and how they do Ionic directives.
任何意见是值得欢迎的，以及与此你可以尝试使自己或改善这一点。
Any feedback is welcome, and with this you can try to make your own or improve this one.
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