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https://github.com/ionic-team/ionic-framework.git
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More broken things.
This commit is contained in:
Max Lynch
500
js/views/listViewScroll.js
Normal file
500
js/views/listViewScroll.js
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@ -0,0 +1,500 @@
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(function(ionic) {
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'use strict';
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var DragOp = function() {};
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DragOp.prototype = {
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start: function(e) {
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},
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drag: function(e) {
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},
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end: function(e) {
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}
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};
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/**
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* The Pull To Refresh drag operation handles the well-known
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* "pull to refresh" concept seen on various apps. This lets
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* the user indicate they want to refresh a given list by dragging
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* down.
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*
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* @param {object} opts the options for the pull to refresh drag.
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*/
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var PullToRefreshDrag = function(opts) {
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this.dragThresholdY = opts.dragThresholdY || 10;
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this.onRefreshOpening = opts.onRefreshOpening || function() {};
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this.onRefresh = opts.onRefresh || function() {};
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this.onRefreshHolding = opts.onRefreshHolding || function() {};
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this.el = opts.el;
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};
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PullToRefreshDrag.prototype = new DragOp();
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PullToRefreshDrag.prototype.start = function(e) {
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var content, refresher;
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content = ionic.DomUtil.getParentOrSelfWithClass(e.target, 'list');
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if(!content) { return; }
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// Grab the refresher element that will show as you drag down
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refresher = content.querySelector('.list-refresher');
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if(!refresher) {
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refresher = this._injectRefresher();
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}
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// Disable animations while dragging
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refresher.classList.remove('list-refreshing');
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this._currentDrag = {
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refresher: refresher,
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content: content,
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isHolding: false
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};
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};
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PullToRefreshDrag.prototype._injectRefresher = function() {
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var refresher = document.createElement('div');
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refresher.className = 'list-refresher';
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this.el.insertBefore(refresher, this.el.firstChild);
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return refresher;
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};
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PullToRefreshDrag.prototype.drag = function(e) {
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var _this = this;
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window.requestAnimationFrame(function() {
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// We really aren't dragging
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if(!_this._currentDrag) {
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return;
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}
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// Check if we should start dragging. Check if we've dragged past the threshold,
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// or we are starting from the open state.
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if(!_this._isDragging && Math.abs(e.gesture.deltaY) > _this.dragThresholdY) {
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_this._isDragging = true;
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}
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if(_this._isDragging) {
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var refresher = _this._currentDrag.refresher;
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var currentHeight = parseFloat(refresher.style.height);
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refresher.style.height = e.gesture.deltaY + 'px';
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var newHeight = parseFloat(refresher.style.height);
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var firstChildHeight = parseFloat(refresher.firstElementChild.offsetHeight);
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if(newHeight > firstChildHeight && !_this._currentDrag.isHolding) {
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// The user is holding the refresh but hasn't let go of it
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_this._currentDrag.isHolding = true;
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_this.onRefreshHolding && _this.onRefreshHolding();
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} else {
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// Indicate what ratio of opening the list refresh drag is
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var ratio = Math.min(1, newHeight / firstChildHeight);
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_this.onRefreshOpening && _this.onRefreshOpening(ratio);
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}
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}
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});
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};
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PullToRefreshDrag.prototype.end = function(e, doneCallback) {
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var _this = this;
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// There is no drag, just end immediately
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if(!this._currentDrag) {
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return;
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}
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var refresher = this._currentDrag.refresher;
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var currentHeight = parseFloat(refresher.style.height);
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refresher.style.height = e.gesture.deltaY + 'px';
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var firstChildHeight = parseFloat(refresher.firstElementChild.offsetHeight);
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if(currentHeight > firstChildHeight) {
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//this.refreshing();
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refresher.classList.add('list-refreshing');
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refresher.style.height = firstChildHeight + 'px';
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this.onRefresh && _this.onRefresh();
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} else {
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// Enable animations
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refresher.classList.add('list-refreshing');
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refresher.style.height = '0px';
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this.onRefresh && _this.onRefresh();
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}
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this._currentDrag = null;
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doneCallback && doneCallback();
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};
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var SlideDrag = function(opts) {
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this.dragThresholdX = opts.dragThresholdX || 10;
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this.el = opts.el;
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};
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SlideDrag.prototype = new DragOp();
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SlideDrag.prototype.start = function(e) {
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var content, buttons, offsetX, buttonsWidth;
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if(e.target.classList.contains('list-item-content')) {
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content = e.target;
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} else if(e.target.classList.contains('list-item')) {
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content = e.target.querySelector('.list-item-content');
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}
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// If we don't have a content area as one of our children (or ourselves), skip
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if(!content) {
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return;
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}
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// Make sure we aren't animating as we slide
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content.classList.remove('list-item-sliding');
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// Grab the starting X point for the item (for example, so we can tell whether it is open or closed to start)
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offsetX = parseFloat(content.style.webkitTransform.replace('translate3d(', '').split(',')[0]) || 0;
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// Grab the buttons
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buttons = content.parentNode.querySelector('.list-item-buttons');
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if(!buttons) {
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return;
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}
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buttonsWidth = buttons.offsetWidth;
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this._currentDrag = {
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buttonsWidth: buttonsWidth,
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content: content,
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startOffsetX: offsetX
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};
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};
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SlideDrag.prototype.drag = function(e) {
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var _this = this, buttonsWidth;
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window.requestAnimationFrame(function() {
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// We really aren't dragging
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if(!_this._currentDrag) {
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return;
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}
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// Check if we should start dragging. Check if we've dragged past the threshold,
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// or we are starting from the open state.
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if(!_this._isDragging &&
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((Math.abs(e.gesture.deltaX) > _this.dragThresholdX) ||
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(Math.abs(_this._currentDrag.startOffsetX) > 0)))
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{
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_this._isDragging = true;
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}
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if(_this._isDragging) {
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buttonsWidth = _this._currentDrag.buttonsWidth;
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// Grab the new X point, capping it at zero
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var newX = Math.min(0, _this._currentDrag.startOffsetX + e.gesture.deltaX);
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// If the new X position is past the buttons, we need to slow down the drag (rubber band style)
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if(newX < -buttonsWidth) {
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// Calculate the new X position, capped at the top of the buttons
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newX = Math.min(-buttonsWidth, -buttonsWidth + (((e.gesture.deltaX + buttonsWidth) * 0.4)));
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}
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_this._currentDrag.content.style.webkitTransform = 'translate3d(' + newX + 'px, 0, 0)';
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}
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});
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};
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SlideDrag.prototype.end = function(e, doneCallback) {
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var _this = this;
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// There is no drag, just end immediately
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if(!this._currentDrag) {
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doneCallback && doneCallback();
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return;
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}
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// If we are currently dragging, we want to snap back into place
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// The final resting point X will be the width of the exposed buttons
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var restingPoint = -this._currentDrag.buttonsWidth;
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// Check if the drag didn't clear the buttons mid-point
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// and we aren't moving fast enough to swipe open
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if(e.gesture.deltaX > -(this._currentDrag.buttonsWidth/2)) {
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// If we are going left but too slow, or going right, go back to resting
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if(e.gesture.direction == "left" && Math.abs(e.gesture.velocityX) < 0.3) {
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restingPoint = 0;
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} else if(e.gesture.direction == "right") {
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restingPoint = 0;
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}
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}
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var content = this._currentDrag.content;
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var onRestingAnimationEnd = function(e) {
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if(e.propertyName == '-webkit-transform') {
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content.classList.remove('list-item-sliding');
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}
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e.target.removeEventListener('webkitTransitionEnd', onRestingAnimationEnd);
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};
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window.requestAnimationFrame(function() {
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var currentX = parseFloat(_this._currentDrag.content.style.webkitTransform.replace('translate3d(', '').split(',')[0]) || 0;
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if(currentX !== restingPoint) {
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_this._currentDrag.content.classList.add('list-item-sliding');
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_this._currentDrag.content.addEventListener('webkitTransitionEnd', onRestingAnimationEnd);
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}
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_this._currentDrag.content.style.webkitTransform = 'translate3d(' + restingPoint + 'px, 0, 0)';
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// Kill the current drag
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this._currentDrag = null;
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// We are done, notify caller
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doneCallback && doneCallback();
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});
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};
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var ReorderDrag = function(opts) {
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this.dragThresholdY = opts.dragThresholdY || 0;
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this.el = opts.el;
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};
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ReorderDrag.prototype = new DragOp();
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ReorderDrag.prototype.start = function(e) {
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var content;
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// Grab the starting Y point for the item
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var offsetY = this.el.offsetTop;//parseFloat(this.el.style.webkitTransform.replace('translate3d(', '').split(',')[1]) || 0;
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var placeholder = this.el.cloneNode(true);
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placeholder.classList.add('list-item-placeholder');
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this.el.parentNode.insertBefore(placeholder, this.el);
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this.el.classList.add('list-item-reordering');
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this._currentDrag = {
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startOffsetTop: offsetY,
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placeholder: placeholder
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};
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};
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ReorderDrag.prototype.drag = function(e) {
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var _this = this;
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window.requestAnimationFrame(function() {
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// We really aren't dragging
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if(!_this._currentDrag) {
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return;
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}
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// Check if we should start dragging. Check if we've dragged past the threshold,
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// or we are starting from the open state.
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if(!_this._isDragging && Math.abs(e.gesture.deltaY) > _this.dragThresholdY) {
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_this._isDragging = true;
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}
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if(_this._isDragging) {
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var newY = _this._currentDrag.startOffsetTop + e.gesture.deltaY;
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_this.el.style.top = newY + 'px';
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_this._currentDrag.currentY = newY;
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_this._reorderItems();
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}
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});
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};
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// When an item is dragged, we need to reorder any items for sorting purposes
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ReorderDrag.prototype._reorderItems = function() {
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var placeholder = this._currentDrag.placeholder;
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var siblings = Array.prototype.slice.call(this._currentDrag.placeholder.parentNode.children);
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// Remove the floating element from the child search list
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siblings.splice(siblings.indexOf(this.el), 1);
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var index = siblings.indexOf(this._currentDrag.placeholder);
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var topSibling = siblings[Math.max(0, index - 1)];
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var bottomSibling = siblings[Math.min(siblings.length, index+1)];
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var thisOffsetTop = this._currentDrag.currentY;// + this._currentDrag.startOffsetTop;
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if(topSibling && (thisOffsetTop < topSibling.offsetTop + topSibling.offsetHeight/2)) {
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ionic.DomUtil.swapNodes(this._currentDrag.placeholder, topSibling);
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return index - 1;
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} else if(bottomSibling && thisOffsetTop > (bottomSibling.offsetTop + bottomSibling.offsetHeight/2)) {
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ionic.DomUtil.swapNodes(bottomSibling, this._currentDrag.placeholder);
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return index + 1;
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}
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};
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ReorderDrag.prototype.end = function(e, doneCallback) {
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if(!this._currentDrag) {
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doneCallback && doneCallback();
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return;
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}
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var placeholder = this._currentDrag.placeholder;
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// Reposition the element
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this.el.classList.remove('list-item-reordering');
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this.el.style.top = 0;
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var finalPosition = ionic.DomUtil.getChildIndex(placeholder);
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placeholder.parentNode.insertBefore(this.el, placeholder);
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placeholder.parentNode.removeChild(placeholder);
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this._currentDrag = null;
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doneCallback && doneCallback();
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};
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/**
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* The ListView handles a list of items. It will process drag animations, edit mode,
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* and other operations that are common on mobile lists or table views.
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*/
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ionic.views.ListView = ionic.views.Scroll.inherit({
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initialize: function(opts) {
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ionic.views.ListView.__super__.initialize.call(this, opts);
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/*
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var _this = this;
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this.el = opts.el;
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// The amount of dragging required to start sliding the element over (in pixels)
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this.dragThresholdX = opts.dragThresholdX || 10;
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this.onRefresh = opts.onRefresh || function() {};
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this.onRefreshOpening = opts.onRefreshOpening || function() {};
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this.onRefreshHolding = opts.onRefreshHolding || function() {};
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// Start the drag states
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this._initDrag();
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// Listen for drag and release events
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window.ionic.onGesture('drag', function(e) {
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_this._handleDrag(e);
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}, this.el);
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window.ionic.onGesture('release', function(e) {
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_this._handleEndDrag(e);
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}, this.el);
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*/
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},
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/**
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* Called to tell the list to stop refreshing. This is useful
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* if you are refreshing the list and are done with refreshing.
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*/
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stopRefreshing: function() {
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var refresher = this.el.querySelector('.list-refresher');
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refresher.style.height = '0px';
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},
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_initDrag: function() {
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ionic.views.ListView.__super__._initDrag.call(this);
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//this._isDragging = false;
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//this._dragOp = null;
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},
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// Return the list item from the given target
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_getItem: function(target) {
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while(target) {
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if(target.classList.contains('list-item')) {
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return target;
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}
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target = target.parentNode;
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}
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return null;
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},
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_startDrag: function(e) {
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ionic.views.ListView.__super__._startDrag.call(this, e);
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var _this = this;
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/*
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this._isDragging = false;
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// Check if this is a reorder drag
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if(ionic.DomUtil.getParentOrSelfWithClass(e.target, 'list-item-drag') && (e.gesture.direction == 'up' || e.gesture.direction == 'down')) {
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var item = this._getItem(e.target);
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if(item) {
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this._dragOp = new ReorderDrag({ el: item });
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this._dragOp.start(e);
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}
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}
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*/
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/*
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// Check if this is a "pull down" drag for pull to refresh
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else if(e.gesture.direction == 'down') {
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this._dragOp = new PullToRefreshDrag({
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el: this.el,
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onRefresh: function() {
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_this.onRefresh && _this.onRefresh();
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},
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onRefreshHolding: function() {
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_this.onRefreshHolding && _this.onRefreshHolding();
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},
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onRefreshOpening: function(ratio) {
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_this.onRefreshOpening && _this.onRefreshOpening(ratio);
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}
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});
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this._dragOp.start(e);
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}
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*/
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// Or check if this is a swipe to the side drag
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/*
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else if(e.gesture.direction == 'left' || e.gesture.direction == 'right') {
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this._dragOp = new SlideDrag({ el: this.el });
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this._dragOp.start(e);
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}
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*/
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},
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_handleEndDrag: function(e) {
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ionic.views.ListView.__super__._handleEndDrag.call(this, e);
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/*
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var _this = this;
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if(!this._dragOp) {
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this._initDrag();
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return;
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}
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this._dragOp.end(e, function() {
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_this._initDrag();
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});
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*/
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},
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/**
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* Process the drag event to move the item to the left or right.
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*/
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_handleDrag: function(e) {
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ionic.views.ListView.__super__._handleDrag.call(this, e);
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/*
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var _this = this, content, buttons;
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if(!this._dragOp) {
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this._startDrag(e);
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if(!this._dragOp) { return; }
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}
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this._dragOp.drag(e);
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*/
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}
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});
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})(ionic);
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Reference in New Issue
Block a user