mirror of
https://github.com/donl/meteor-ionic.git
synced 2026-05-26 22:06:41 -06:00
792 lines
33 KiB
JavaScript
792 lines
33 KiB
JavaScript
/*
|
|
Slip - swiping and reordering in lists of elements on touch screens, no fuss.
|
|
|
|
Fires these events on list elements:
|
|
|
|
• slip:swipe
|
|
When swipe has been done and user has lifted finger off the screen.
|
|
If you execute event.preventDefault() the element will be animated back to original position.
|
|
Otherwise it will be animated off the list and set to display:none.
|
|
|
|
• slip:beforeswipe
|
|
Fired before first swipe movement starts.
|
|
If you execute event.preventDefault() then element will not move at all.
|
|
|
|
• slip:reorder
|
|
Element has been dropped in new location. event.detail contains the location:
|
|
• insertBefore: DOM node before which element has been dropped (null is the end of the list). Use with node.insertBefore().
|
|
• spliceIndex: Index of element before which current element has been dropped, not counting the element iself.
|
|
For use with Array.splice() if the list is reflecting objects in some array.
|
|
|
|
• slip:beforereorder
|
|
When reordering movement starts.
|
|
Element being reordered gets class `slip-reordering`.
|
|
If you execute event.preventDefault() then element will not move at all.
|
|
|
|
• slip:beforewait
|
|
If you execute event.preventDefault() then reordering will begin immediately, blocking ability to scroll the page.
|
|
|
|
• slip:tap
|
|
When element was tapped without being swiped/reordered.
|
|
|
|
• slip:cancelswipe
|
|
Fired when the user stops dragging and the element returns to its original position.
|
|
|
|
|
|
Usage:
|
|
|
|
CSS:
|
|
You should set `user-select:none` (and WebKit prefixes, sigh) on list elements,
|
|
otherwise unstoppable and glitchy text selection in iOS will get in the way.
|
|
|
|
You should set `overflow-x: hidden` on the container or body to prevent horizontal scrollbar
|
|
appearing when elements are swiped off the list.
|
|
|
|
|
|
var list = document.querySelector('ul#slippylist');
|
|
new Slip(list);
|
|
|
|
list.addEventListener('slip:beforeswipe', function(e) {
|
|
if (shouldNotSwipe(e.target)) e.preventDefault();
|
|
});
|
|
|
|
list.addEventListener('slip:swipe', function(e) {
|
|
// e.target swiped
|
|
if (thatWasSwipeToRemove) {
|
|
e.target.parentNode.removeChild(e.target);
|
|
} else {
|
|
e.preventDefault(); // will animate back to original position
|
|
}
|
|
});
|
|
|
|
list.addEventListener('slip:beforereorder', function(e) {
|
|
if (shouldNotReorder(e.target)) e.preventDefault();
|
|
});
|
|
|
|
list.addEventListener('slip:reorder', function(e) {
|
|
// e.target reordered.
|
|
if (reorderedOK) {
|
|
e.target.parentNode.insertBefore(e.target, e.detail.insertBefore);
|
|
} else {
|
|
e.preventDefault();
|
|
}
|
|
});
|
|
|
|
Requires:
|
|
• Touch events
|
|
• CSS transforms
|
|
• Function.bind()
|
|
|
|
Caveats:
|
|
• Elements must not change size while reordering or swiping takes place (otherwise it will be visually out of sync)
|
|
*/
|
|
/*! @license
|
|
Slip.js 1.2.0
|
|
|
|
© 2014 Kornel Lesiński <kornel@geekhood.net>. All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without modification,
|
|
are permitted provided that the following conditions are met:
|
|
|
|
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
|
|
|
|
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
|
|
the following disclaimer in the documentation and/or other materials provided with the distribution.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
|
|
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
window['Slip'] = (function(){
|
|
'use strict';
|
|
|
|
var damnYouChrome = /Chrome\/[34]/.test(navigator.userAgent); // For bugs that can't be programmatically detected :( Intended to catch all versions of Chrome 30-40
|
|
var needsBodyHandlerHack = damnYouChrome; // Otherwise I _sometimes_ don't get any touchstart events and only clicks instead.
|
|
|
|
/* When dragging elements down in Chrome (tested 34-37) dragged element may appear below stationary elements.
|
|
Looks like WebKit bug #61824, but iOS Safari doesn't have that problem. */
|
|
var compositorDoesNotOrderLayers = damnYouChrome;
|
|
|
|
// -webkit-mess
|
|
var testElement = document.createElement('div');
|
|
|
|
var transitionPrefix = "webkitTransition" in testElement.style ? "webkitTransition" : "transition";
|
|
var transformPrefix = "webkitTransform" in testElement.style ? "webkitTransform" : "transform";
|
|
var transformProperty = transformPrefix === "webkitTransform" ? "-webkit-transform" : "transform";
|
|
var userSelectPrefix = "webkitUserSelect" in testElement.style ? "webkitUserSelect" : "userSelect";
|
|
|
|
testElement.style[transformPrefix] = 'translateZ(0)';
|
|
var hwLayerMagic = testElement.style[transformPrefix] ? 'translateZ(0) ' : '';
|
|
var hwTopLayerMagic = testElement.style[transformPrefix] ? 'translateZ(1px) ' : '';
|
|
testElement = null;
|
|
|
|
var globalInstances = 0;
|
|
var attachedBodyHandlerHack = false;
|
|
var nullHandler = function(){};
|
|
|
|
function Slip(container, options) {
|
|
if ('string' === typeof container) container = document.querySelector(container);
|
|
if (!container || !container.addEventListener) throw new Error("Please specify DOM node to attach to");
|
|
|
|
if (!this || this === window) return new Slip(container, options);
|
|
|
|
this.options = options;
|
|
|
|
// Functions used for as event handlers need usable `this` and must not change to be removable
|
|
this.cancel = this.setState.bind(this, this.states.idle);
|
|
this.onTouchStart = this.onTouchStart.bind(this);
|
|
this.onTouchMove = this.onTouchMove.bind(this);
|
|
this.onTouchEnd = this.onTouchEnd.bind(this);
|
|
this.onMouseDown = this.onMouseDown.bind(this);
|
|
this.onMouseMove = this.onMouseMove.bind(this);
|
|
this.onMouseUp = this.onMouseUp.bind(this);
|
|
this.onMouseLeave = this.onMouseLeave.bind(this);
|
|
this.onSelection = this.onSelection.bind(this);
|
|
|
|
this.setState(this.states.idle);
|
|
this.attach(container);
|
|
}
|
|
|
|
function getTransform(node) {
|
|
var transform = node.style[transformPrefix];
|
|
if (transform) {
|
|
return {
|
|
value:transform,
|
|
original:transform,
|
|
};
|
|
}
|
|
|
|
if (window.getComputedStyle) {
|
|
var style = window.getComputedStyle(node).getPropertyValue(transformProperty);
|
|
if (style && style !== 'none') return {value:style, original:''};
|
|
}
|
|
return {value:'', original:''};
|
|
}
|
|
|
|
function findIndex(target, nodes) {
|
|
var originalIndex = 0;
|
|
var listCount = 0;
|
|
|
|
for (var i=0; i < nodes.length; i++) {
|
|
if (nodes[i].nodeType === 1) {
|
|
listCount++;
|
|
if (nodes[i] === target.node) {
|
|
originalIndex = listCount-1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return originalIndex;
|
|
}
|
|
|
|
// All functions in states are going to be executed in context of Slip object
|
|
Slip.prototype = {
|
|
|
|
container: null,
|
|
options: {},
|
|
state: null,
|
|
|
|
target: null, // the tapped/swiped/reordered node with height and backed up styles
|
|
|
|
usingTouch: false, // there's no good way to detect touchscreen preference other than receiving a touch event (really, trust me).
|
|
mouseHandlersAttached: false,
|
|
|
|
startPosition: null, // x,y,time where first touch began
|
|
latestPosition: null, // x,y,time where the finger is currently
|
|
previousPosition: null, // x,y,time where the finger was ~100ms ago (for velocity calculation)
|
|
|
|
canPreventScrolling: false,
|
|
|
|
states: {
|
|
idle: function idleStateInit() {
|
|
this.target = null;
|
|
this.usingTouch = false;
|
|
this.removeMouseHandlers();
|
|
|
|
return {
|
|
allowTextSelection: true,
|
|
};
|
|
},
|
|
|
|
undecided: function undecidedStateInit() {
|
|
this.target.height = this.target.node.offsetHeight;
|
|
this.target.node.style[transitionPrefix] = '';
|
|
|
|
if (!this.dispatch(this.target.originalTarget, 'beforewait')) {
|
|
if (this.dispatch(this.target.originalTarget, 'beforereorder')) {
|
|
this.setState(this.states.reorder);
|
|
}
|
|
} else {
|
|
var holdTimer = setTimeout(function(){
|
|
var move = this.getAbsoluteMovement();
|
|
if (this.canPreventScrolling && move.x < 15 && move.y < 25) {
|
|
if (this.dispatch(this.target.originalTarget, 'beforereorder')) {
|
|
this.setState(this.states.reorder);
|
|
}
|
|
}
|
|
}.bind(this), 300);
|
|
}
|
|
|
|
return {
|
|
leaveState: function() {
|
|
clearTimeout(holdTimer);
|
|
},
|
|
|
|
onMove: function() {
|
|
var move = this.getAbsoluteMovement();
|
|
|
|
if (move.x > 20 && move.y < Math.max(100, this.target.height)) {
|
|
if (this.dispatch(this.target.originalTarget, 'beforeswipe')) {
|
|
this.setState(this.states.swipe);
|
|
return false;
|
|
} else {
|
|
this.setState(this.states.idle);
|
|
}
|
|
}
|
|
if (move.y > 20) {
|
|
this.setState(this.states.idle);
|
|
}
|
|
|
|
// Chrome likes sideways scrolling :(
|
|
if (move.x > move.y*1.2) return false;
|
|
},
|
|
|
|
onLeave: function() {
|
|
this.setState(this.states.idle);
|
|
},
|
|
|
|
onEnd: function() {
|
|
var allowDefault = this.dispatch(this.target.originalTarget, 'tap');
|
|
this.setState(this.states.idle);
|
|
return allowDefault;
|
|
},
|
|
};
|
|
},
|
|
|
|
swipe: function swipeStateInit() {
|
|
var swipeSuccess = false;
|
|
var container = this.container;
|
|
|
|
var originalIndex = findIndex(this.target, this.container.childNodes);
|
|
|
|
container.className += ' slip-swiping-container';
|
|
function removeClass() {
|
|
container.className = container.className.replace(/(?:^| )slip-swiping-container/,'');
|
|
}
|
|
|
|
this.target.height = this.target.node.offsetHeight;
|
|
|
|
return {
|
|
leaveState: function() {
|
|
if (swipeSuccess) {
|
|
this.animateSwipe(function(target){
|
|
target.node.style[transformPrefix] = target.baseTransform.original;
|
|
target.node.style[transitionPrefix] = '';
|
|
if (this.dispatch(target.node, 'afterswipe')) {
|
|
removeClass();
|
|
return true;
|
|
} else {
|
|
this.animateToZero(undefined, target);
|
|
}
|
|
}.bind(this));
|
|
} else {
|
|
this.animateToZero(removeClass);
|
|
this.dispatch(this.target.node, 'cancelswipe');
|
|
}
|
|
},
|
|
|
|
onMove: function() {
|
|
var move = this.getTotalMovement();
|
|
|
|
if (Math.abs(move.y) < this.target.height+20) {
|
|
this.target.node.style[transformPrefix] = 'translate(' + move.x + 'px,0) ' + hwLayerMagic + this.target.baseTransform.value;
|
|
return false;
|
|
} else {
|
|
this.setState(this.states.idle);
|
|
}
|
|
},
|
|
|
|
onLeave: function() {
|
|
this.state.onEnd.call(this);
|
|
},
|
|
|
|
onEnd: function() {
|
|
var dx = this.latestPosition.x - this.previousPosition.x;
|
|
var dy = this.latestPosition.y - this.previousPosition.y;
|
|
var velocity = Math.sqrt(dx*dx + dy*dy) / (this.latestPosition.time - this.previousPosition.time + 1);
|
|
|
|
var move = this.getAbsoluteMovement();
|
|
var swiped = velocity > 0.6 && move.time > 110;
|
|
|
|
var direction;
|
|
if (dx > 0) {
|
|
direction = "right";
|
|
} else {
|
|
direction = "left";
|
|
}
|
|
|
|
if (swiped) {
|
|
if (this.dispatch(this.target.node, 'swipe', {direction: direction, originalIndex: originalIndex})) {
|
|
swipeSuccess = true; // can't animate here, leaveState overrides anim
|
|
}
|
|
}
|
|
this.setState(this.states.idle);
|
|
return !swiped;
|
|
},
|
|
};
|
|
},
|
|
|
|
reorder: function reorderStateInit() {
|
|
this.target.height = this.target.node.offsetHeight;
|
|
|
|
var nodes = this.container.childNodes;
|
|
var originalIndex = findIndex(this.target, nodes);
|
|
var mouseOutsideTimer;
|
|
var zero = this.target.node.offsetTop + this.target.height/2;
|
|
var otherNodes = [];
|
|
for(var i=0; i < nodes.length; i++) {
|
|
if (nodes[i].nodeType != 1 || nodes[i] === this.target.node) continue;
|
|
var t = nodes[i].offsetTop;
|
|
nodes[i].style[transitionPrefix] = transformProperty + ' 0.2s ease-in-out';
|
|
otherNodes.push({
|
|
node: nodes[i],
|
|
baseTransform: getTransform(nodes[i]),
|
|
pos: t + (t < zero ? nodes[i].offsetHeight : 0) - zero,
|
|
});
|
|
}
|
|
|
|
this.target.node.className += ' slip-reordering';
|
|
this.target.node.style.zIndex = '99999';
|
|
this.target.node.style[userSelectPrefix] = 'none';
|
|
if (compositorDoesNotOrderLayers) {
|
|
// Chrome's compositor doesn't sort 2D layers
|
|
this.container.style.webkitTransformStyle = 'preserve-3d';
|
|
}
|
|
|
|
function setPosition() {
|
|
/*jshint validthis:true */
|
|
|
|
if (mouseOutsideTimer) {
|
|
// don't care where the mouse is as long as it moves
|
|
clearTimeout(mouseOutsideTimer); mouseOutsideTimer = null;
|
|
}
|
|
|
|
var move = this.getTotalMovement();
|
|
this.target.node.style[transformPrefix] = 'translate(0,' + move.y + 'px) ' + hwTopLayerMagic + this.target.baseTransform.value;
|
|
|
|
var height = this.target.height;
|
|
otherNodes.forEach(function(o){
|
|
var off = 0;
|
|
if (o.pos < 0 && move.y < 0 && o.pos > move.y) {
|
|
off = height;
|
|
}
|
|
else if (o.pos > 0 && move.y > 0 && o.pos < move.y) {
|
|
off = -height;
|
|
}
|
|
// FIXME: should change accelerated/non-accelerated state lazily
|
|
o.node.style[transformPrefix] = off ? 'translate(0,'+off+'px) ' + hwLayerMagic + o.baseTransform.value : o.baseTransform.original;
|
|
});
|
|
return false;
|
|
}
|
|
|
|
setPosition.call(this);
|
|
|
|
return {
|
|
leaveState: function() {
|
|
if (mouseOutsideTimer) clearTimeout(mouseOutsideTimer);
|
|
|
|
if (compositorDoesNotOrderLayers) {
|
|
this.container.style.webkitTransformStyle = '';
|
|
}
|
|
|
|
this.target.node.className = this.target.node.className.replace(/(?:^| )slip-reordering/,'');
|
|
this.target.node.style[userSelectPrefix] = '';
|
|
|
|
this.animateToZero(function(target){
|
|
target.node.style.zIndex = '';
|
|
});
|
|
otherNodes.forEach(function(o){
|
|
o.node.style[transformPrefix] = o.baseTransform.original;
|
|
o.node.style[transitionPrefix] = ''; // FIXME: animate to new position
|
|
});
|
|
},
|
|
|
|
onMove: setPosition,
|
|
|
|
onLeave: function() {
|
|
// don't let element get stuck if mouse left the window
|
|
// but don't cancel immediately as it'd be annoying near window edges
|
|
if (mouseOutsideTimer) clearTimeout(mouseOutsideTimer);
|
|
mouseOutsideTimer = setTimeout(function(){
|
|
mouseOutsideTimer = null;
|
|
this.cancel();
|
|
}.bind(this), 700);
|
|
},
|
|
|
|
onEnd: function() {
|
|
var move = this.getTotalMovement();
|
|
if (move.y < 0) {
|
|
for(var i=0; i < otherNodes.length; i++) {
|
|
if (otherNodes[i].pos > move.y) {
|
|
this.dispatch(this.target.node, 'reorder', {spliceIndex:i, insertBefore:otherNodes[i].node, originalIndex: originalIndex});
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
for(var i=otherNodes.length-1; i >= 0; i--) {
|
|
if (otherNodes[i].pos < move.y) {
|
|
this.dispatch(this.target.node, 'reorder', {spliceIndex:i+1, insertBefore:otherNodes[i+1] ? otherNodes[i+1].node : null, originalIndex: originalIndex});
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
this.setState(this.states.idle);
|
|
return false;
|
|
},
|
|
};
|
|
},
|
|
},
|
|
|
|
attach: function(container) {
|
|
globalInstances++;
|
|
if (this.container) this.detach();
|
|
|
|
// In some cases taps on list elements send *only* click events and no touch events. Spotted only in Chrome 32+
|
|
// Having event listener on body seems to solve the issue (although AFAIK may disable smooth scrolling as a side-effect)
|
|
if (!attachedBodyHandlerHack && needsBodyHandlerHack) {
|
|
attachedBodyHandlerHack = true;
|
|
document.body.addEventListener('touchstart', nullHandler, false);
|
|
}
|
|
|
|
this.container = container;
|
|
this.otherNodes = [];
|
|
|
|
// selection on iOS interferes with reordering
|
|
document.addEventListener("selectionchange", this.onSelection, false);
|
|
|
|
// cancel is called e.g. when iOS detects multitasking gesture
|
|
this.container.addEventListener('touchcancel', this.cancel, false);
|
|
this.container.addEventListener('touchstart', this.onTouchStart, false);
|
|
this.container.addEventListener('touchmove', this.onTouchMove, false);
|
|
this.container.addEventListener('touchend', this.onTouchEnd, false);
|
|
this.container.addEventListener('mousedown', this.onMouseDown, false);
|
|
// mousemove and mouseup are attached dynamically
|
|
},
|
|
|
|
detach: function() {
|
|
this.cancel();
|
|
|
|
this.container.removeEventListener('mousedown', this.onMouseDown, false);
|
|
this.container.removeEventListener('touchend', this.onTouchEnd, false);
|
|
this.container.removeEventListener('touchmove', this.onTouchMove, false);
|
|
this.container.removeEventListener('touchstart', this.onTouchStart, false);
|
|
this.container.removeEventListener('touchcancel', this.cancel, false);
|
|
|
|
document.removeEventListener("selectionchange", this.onSelection, false);
|
|
|
|
globalInstances--;
|
|
if (!globalInstances && attachedBodyHandlerHack) {
|
|
attachedBodyHandlerHack = false;
|
|
document.body.removeEventListener('touchstart', nullHandler, false);
|
|
}
|
|
},
|
|
|
|
setState: function(newStateCtor){
|
|
if (this.state) {
|
|
if (this.state.ctor === newStateCtor) return;
|
|
if (this.state.leaveState) this.state.leaveState.call(this);
|
|
}
|
|
|
|
// Must be re-entrant in case ctor changes state
|
|
var prevState = this.state;
|
|
var nextState = newStateCtor.call(this);
|
|
if (this.state === prevState) {
|
|
nextState.ctor = newStateCtor;
|
|
this.state = nextState;
|
|
}
|
|
},
|
|
|
|
findTargetNode: function(targetNode) {
|
|
while(targetNode && targetNode.parentNode !== this.container) {
|
|
targetNode = targetNode.parentNode;
|
|
}
|
|
return targetNode;
|
|
},
|
|
|
|
onSelection: function(e) {
|
|
var isRelated = e.target === document || this.findTargetNode(e);
|
|
if (!isRelated) return;
|
|
|
|
if (e.cancelable || e.defaultPrevented) {
|
|
if (!this.state.allowTextSelection) {
|
|
e.preventDefault();
|
|
}
|
|
} else {
|
|
// iOS doesn't allow selection to be prevented
|
|
this.setState(this.states.idle);
|
|
}
|
|
},
|
|
|
|
addMouseHandlers: function() {
|
|
// unlike touch events, mousemove/up is not conveniently fired on the same element,
|
|
// but I don't need to listen to unrelated events all the time
|
|
if (!this.mouseHandlersAttached) {
|
|
this.mouseHandlersAttached = true;
|
|
document.documentElement.addEventListener('mouseleave', this.onMouseLeave, false);
|
|
window.addEventListener('mousemove', this.onMouseMove, true);
|
|
window.addEventListener('mouseup', this.onMouseUp, true);
|
|
window.addEventListener('blur', this.cancel, false);
|
|
}
|
|
},
|
|
|
|
removeMouseHandlers: function() {
|
|
if (this.mouseHandlersAttached) {
|
|
this.mouseHandlersAttached = false;
|
|
document.documentElement.removeEventListener('mouseleave', this.onMouseLeave, false);
|
|
window.removeEventListener('mousemove', this.onMouseMove, true);
|
|
window.removeEventListener('mouseup', this.onMouseUp, true);
|
|
window.removeEventListener('blur', this.cancel, false);
|
|
}
|
|
},
|
|
|
|
onMouseLeave: function(e) {
|
|
if (this.usingTouch) return;
|
|
|
|
if (e.target === document.documentElement || e.relatedTarget === document.documentElement) {
|
|
if (this.state.onLeave) {
|
|
this.state.onLeave.call(this);
|
|
}
|
|
}
|
|
},
|
|
|
|
onMouseDown: function(e) {
|
|
if (this.usingTouch || e.button != 0 || !this.setTarget(e)) return;
|
|
|
|
this.addMouseHandlers(); // mouseup, etc.
|
|
|
|
this.canPreventScrolling = true; // or rather it doesn't apply to mouse
|
|
|
|
this.startAtPosition({
|
|
x: e.clientX,
|
|
y: e.clientY,
|
|
time: e.timeStamp,
|
|
});
|
|
},
|
|
|
|
onTouchStart: function(e) {
|
|
this.usingTouch = true;
|
|
this.canPreventScrolling = true;
|
|
|
|
// This implementation cares only about single touch
|
|
if (e.touches.length > 1) {
|
|
this.setState(this.states.idle);
|
|
return;
|
|
}
|
|
|
|
if (!this.setTarget(e)) return;
|
|
|
|
this.startAtPosition({
|
|
x: e.touches[0].clientX,
|
|
y: e.touches[0].clientY - window.scrollY,
|
|
time: e.timeStamp,
|
|
});
|
|
},
|
|
|
|
setTarget: function(e) {
|
|
var targetNode = this.findTargetNode(e.target);
|
|
if (!targetNode) {
|
|
this.setState(this.states.idle);
|
|
return false;
|
|
}
|
|
|
|
//check for a scrollable parent
|
|
var scrollContainer = targetNode.parentNode;
|
|
while (scrollContainer){
|
|
if (scrollContainer.scrollHeight > scrollContainer.clientHeight && window.getComputedStyle(scrollContainer)['overflow-y'] != 'visible') break;
|
|
else scrollContainer = scrollContainer.parentNode;
|
|
}
|
|
|
|
this.target = {
|
|
originalTarget: e.target,
|
|
node: targetNode,
|
|
scrollContainer: scrollContainer,
|
|
baseTransform: getTransform(targetNode),
|
|
};
|
|
return true;
|
|
},
|
|
|
|
startAtPosition: function(pos) {
|
|
this.startPosition = this.previousPosition = this.latestPosition = pos;
|
|
this.setState(this.states.undecided);
|
|
},
|
|
|
|
updatePosition: function(e, pos) {
|
|
if(this.target == null)
|
|
return;
|
|
this.latestPosition = pos;
|
|
|
|
var triggerOffset = 40,
|
|
offset = 0;
|
|
|
|
var scrollable = this.target.scrollContainer || document.body,
|
|
containerRect = scrollable.getBoundingClientRect(),
|
|
targetRect = this.target.node.getBoundingClientRect(),
|
|
bottomOffset = Math.min(containerRect.bottom, window.innerHeight) - targetRect.bottom,
|
|
topOffset = targetRect.top - Math.max(containerRect.top, 0);
|
|
|
|
if (bottomOffset < triggerOffset){
|
|
offset = triggerOffset - bottomOffset;
|
|
}
|
|
else if (topOffset < triggerOffset){
|
|
offset = topOffset - triggerOffset;
|
|
}
|
|
|
|
var prevScrollTop = scrollable.scrollTop;
|
|
scrollable.scrollTop += offset;
|
|
if (prevScrollTop != scrollable.scrollTop) this.startPosition.y += prevScrollTop-scrollable.scrollTop;
|
|
|
|
if (this.state.onMove) {
|
|
if (this.state.onMove.call(this) === false) {
|
|
e.preventDefault();
|
|
}
|
|
}
|
|
|
|
// sample latestPosition 100ms for velocity
|
|
if (this.latestPosition.time - this.previousPosition.time > 100) {
|
|
this.previousPosition = this.latestPosition;
|
|
}
|
|
},
|
|
|
|
onMouseMove: function(e) {
|
|
this.updatePosition(e, {
|
|
x: e.clientX,
|
|
y: e.clientY,
|
|
time: e.timeStamp,
|
|
});
|
|
},
|
|
|
|
onTouchMove: function(e) {
|
|
this.updatePosition(e, {
|
|
x: e.touches[0].clientX,
|
|
y: e.touches[0].clientY - window.scrollY,
|
|
time: e.timeStamp,
|
|
});
|
|
|
|
// In Apple's touch model only the first move event after touchstart can prevent scrolling (and event.cancelable is broken)
|
|
this.canPreventScrolling = false;
|
|
},
|
|
|
|
onMouseUp: function(e) {
|
|
if (this.usingTouch || e.button !== 0) return;
|
|
|
|
if (this.state.onEnd && false === this.state.onEnd.call(this)) {
|
|
e.preventDefault();
|
|
}
|
|
},
|
|
|
|
onTouchEnd: function(e) {
|
|
if (e.touches.length > 1) {
|
|
this.cancel();
|
|
} else if (this.state.onEnd && false === this.state.onEnd.call(this)) {
|
|
e.preventDefault();
|
|
}
|
|
},
|
|
|
|
getTotalMovement: function() {
|
|
return {
|
|
x:this.latestPosition.x - this.startPosition.x,
|
|
y:this.latestPosition.y - this.startPosition.y,
|
|
};
|
|
},
|
|
|
|
getAbsoluteMovement: function() {
|
|
return {
|
|
x: Math.abs(this.latestPosition.x - this.startPosition.x),
|
|
y: Math.abs(this.latestPosition.y - this.startPosition.y),
|
|
time:this.latestPosition.time - this.startPosition.time,
|
|
};
|
|
},
|
|
|
|
dispatch: function(targetNode, eventName, detail) {
|
|
var event = document.createEvent('CustomEvent');
|
|
if (event && event.initCustomEvent) {
|
|
event.initCustomEvent('slip:' + eventName, true, true, detail);
|
|
} else {
|
|
event = document.createEvent('Event');
|
|
event.initEvent('slip:' + eventName, true, true);
|
|
event.detail = detail;
|
|
}
|
|
return targetNode.dispatchEvent(event);
|
|
},
|
|
|
|
getSiblings: function(target) {
|
|
var siblings = [];
|
|
var tmp = target.node.nextSibling;
|
|
while(tmp) {
|
|
if (tmp.nodeType == 1) siblings.push({
|
|
node: tmp,
|
|
baseTransform: getTransform(tmp),
|
|
});
|
|
tmp = tmp.nextSibling;
|
|
}
|
|
return siblings;
|
|
},
|
|
|
|
animateToZero: function(callback, target) {
|
|
// save, because this.target/container could change during animation
|
|
target = target || this.target;
|
|
|
|
// target.node.style[transitionPrefix] = transformProperty + ' 5s ease-out';
|
|
target.node.style[transformPrefix] = 'translate(0,0) ' + hwLayerMagic + target.baseTransform.value;
|
|
setTimeout(function(){
|
|
target.node.style[transitionPrefix] = '';
|
|
target.node.style[transformPrefix] = target.baseTransform.original;
|
|
if (callback) callback.call(this, target);
|
|
}.bind(this), 101);
|
|
},
|
|
|
|
animateSwipe: function(callback) {
|
|
var target = this.target;
|
|
var siblings = this.getSiblings(target);
|
|
var emptySpaceTransform = 'translate(0,' + this.target.height + 'px) ' + hwLayerMagic + ' ';
|
|
|
|
// FIXME: animate with real velocity
|
|
target.node.style[transitionPrefix] = 'all 0.1s linear';
|
|
target.node.style[transformPrefix] = ' translate(' + (this.getTotalMovement().x > 0 ? '' : '-') + '100%,0) ' + hwLayerMagic + target.baseTransform.value;
|
|
|
|
setTimeout(function(){
|
|
if (callback.call(this, target)) {
|
|
siblings.forEach(function(o){
|
|
o.node.style[transitionPrefix] = '';
|
|
o.node.style[transformPrefix] = emptySpaceTransform + o.baseTransform.value;
|
|
});
|
|
setTimeout(function(){
|
|
siblings.forEach(function(o){
|
|
o.node.style[transitionPrefix] = transformProperty + ' 0.1s ease-in-out';
|
|
o.node.style[transformPrefix] = 'translate(0,0) ' + hwLayerMagic + o.baseTransform.value;
|
|
});
|
|
setTimeout(function(){
|
|
siblings.forEach(function(o){
|
|
o.node.style[transitionPrefix] = '';
|
|
o.node.style[transformPrefix] = o.baseTransform.original;
|
|
});
|
|
},101);
|
|
}, 1);
|
|
}
|
|
}.bind(this), 101);
|
|
},
|
|
};
|
|
|
|
// AMD
|
|
if ('function' === typeof define && define.amd) {
|
|
define(function(){
|
|
return Slip;
|
|
});
|
|
}
|
|
return Slip;
|
|
})();
|