devextreme
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HTML5 JavaScript Component Suite for Responsive Web Development
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JavaScript
/**
* DevExtreme (cjs/ui/scroll_view/ui.scrollable.native.js)
* Version: 22.1.9
* Build date: Tue Apr 18 2023
*
* Copyright (c) 2012 - 2023 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
"use strict";
exports.default = void 0;
var _size = require("../../core/utils/size");
var _renderer = _interopRequireDefault(require("../../core/renderer"));
var _events_engine = _interopRequireDefault(require("../../events/core/events_engine"));
var _index = require("../../events/utils/index");
var _common = require("../../core/utils/common");
var _iterator = require("../../core/utils/iterator");
var _devices = _interopRequireDefault(require("../../core/devices"));
var _class = _interopRequireDefault(require("../../core/class"));
var _ui = _interopRequireDefault(require("./ui.scrollbar"));
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {
default: obj
}
}
var SCROLLABLE_NATIVE = "dxNativeScrollable";
var SCROLLABLE_NATIVE_CLASS = "dx-scrollable-native";
var SCROLLABLE_SCROLLBAR_SIMULATED = "dx-scrollable-scrollbar-simulated";
var SCROLLABLE_SCROLLBARS_HIDDEN = "dx-scrollable-scrollbars-hidden";
var VERTICAL = "vertical";
var HORIZONTAL = "horizontal";
var HIDE_SCROLLBAR_TIMEOUT = 500;
var NativeStrategy = _class.default.inherit({
ctor: function(scrollable) {
this._init(scrollable)
},
_init: function(scrollable) {
this._component = scrollable;
this._$element = scrollable.$element();
this._$container = (0, _renderer.default)(scrollable.container());
this._$content = scrollable.$content();
this._direction = scrollable.option("direction");
this._useSimulatedScrollbar = scrollable.option("useSimulatedScrollbar");
this.option = scrollable.option.bind(scrollable);
this._createActionByOption = scrollable._createActionByOption.bind(scrollable);
this._isLocked = scrollable._isLocked.bind(scrollable);
this._isDirection = scrollable._isDirection.bind(scrollable);
this._allowedDirection = scrollable._allowedDirection.bind(scrollable);
this._getMaxOffset = scrollable._getMaxOffset.bind(scrollable);
this._isRtlNativeStrategy = scrollable._isRtlNativeStrategy.bind(scrollable)
},
render: function() {
var device = _devices.default.real();
var deviceType = device.platform;
this._$element.addClass(SCROLLABLE_NATIVE_CLASS).addClass(SCROLLABLE_NATIVE_CLASS + "-" + deviceType).toggleClass(SCROLLABLE_SCROLLBARS_HIDDEN, !this._isScrollbarVisible());
if (this._isScrollbarVisible() && this._useSimulatedScrollbar) {
this._renderScrollbars()
}
},
updateRtlPosition: function(isFirstRender) {
if (isFirstRender && this.option("rtlEnabled")) {
if (this._isScrollbarVisible() && this._useSimulatedScrollbar) {
this._moveScrollbars()
}
}
},
_renderScrollbars: function() {
this._scrollbars = {};
this._hideScrollbarTimeout = 0;
this._$element.addClass(SCROLLABLE_SCROLLBAR_SIMULATED);
this._renderScrollbar(VERTICAL);
this._renderScrollbar(HORIZONTAL)
},
_renderScrollbar: function(direction) {
if (!this._isDirection(direction)) {
return
}
this._scrollbars[direction] = new _ui.default((0, _renderer.default)("<div>").appendTo(this._$element), {
direction: direction,
expandable: this._component.option("scrollByThumb")
})
},
handleInit: _common.noop,
handleStart: _common.noop,
handleMove: function(e) {
if (this._isLocked()) {
e.cancel = true;
return
}
if (this._allowedDirection()) {
e.originalEvent.isScrollingEvent = true
}
},
handleEnd: _common.noop,
handleCancel: _common.noop,
handleStop: _common.noop,
_eachScrollbar: function(callback) {
callback = callback.bind(this);
(0, _iterator.each)(this._scrollbars || {}, (function(direction, scrollbar) {
callback(scrollbar, direction)
}))
},
createActions: function() {
this._scrollAction = this._createActionByOption("onScroll");
this._updateAction = this._createActionByOption("onUpdated")
},
_createActionArgs: function() {
var _this$location = this.location(),
left = _this$location.left,
top = _this$location.top;
return {
event: this._eventForUserAction,
scrollOffset: this._getScrollOffset(),
reachedLeft: this._isRtlNativeStrategy() ? this._isReachedRight(-left) : this._isReachedLeft(left),
reachedRight: this._isRtlNativeStrategy() ? this._isReachedLeft(-Math.abs(left)) : this._isReachedRight(left),
reachedTop: this._isDirection(VERTICAL) ? Math.round(top) >= 0 : void 0,
reachedBottom: this._isDirection(VERTICAL) ? Math.round(Math.abs(top) - this._getMaxOffset().top) >= 0 : void 0
}
},
_getScrollOffset: function() {
var _this$location2 = this.location(),
top = _this$location2.top,
left = _this$location2.left;
return {
top: -top,
left: this._normalizeOffsetLeft(-left)
}
},
_normalizeOffsetLeft: function(scrollLeft) {
if (this._isRtlNativeStrategy()) {
return this._getMaxOffset().left + scrollLeft
}
return scrollLeft
},
_isReachedLeft: function(left) {
return this._isDirection(HORIZONTAL) ? Math.round(left) >= 0 : void 0
},
_isReachedRight: function(left) {
return this._isDirection(HORIZONTAL) ? Math.round(Math.abs(left) - this._getMaxOffset().left) >= 0 : void 0
},
_isScrollbarVisible: function() {
var _this$option = this.option(),
showScrollbar = _this$option.showScrollbar;
return "never" !== showScrollbar && false !== showScrollbar
},
handleScroll: function(e) {
this._eventForUserAction = e;
this._moveScrollbars();
this._scrollAction(this._createActionArgs())
},
_moveScrollbars: function() {
var _this$_getScrollOffse = this._getScrollOffset(),
top = _this$_getScrollOffse.top,
left = _this$_getScrollOffse.left;
this._eachScrollbar((function(scrollbar) {
scrollbar.moveTo({
top: -top,
left: -left
});
scrollbar.option("visible", true)
}));
this._hideScrollbars()
},
_hideScrollbars: function() {
clearTimeout(this._hideScrollbarTimeout);
this._hideScrollbarTimeout = setTimeout(function() {
this._eachScrollbar((function(scrollbar) {
scrollbar.option("visible", false)
}))
}.bind(this), HIDE_SCROLLBAR_TIMEOUT)
},
location: function() {
return {
left: -this._$container.scrollLeft(),
top: -this._$container.scrollTop()
}
},
disabledChanged: _common.noop,
update: function() {
this._update();
this._updateAction(this._createActionArgs())
},
_update: function() {
this._updateDimensions();
this._updateScrollbars()
},
_updateDimensions: function() {
this._containerSize = {
height: (0, _size.getHeight)(this._$container),
width: (0, _size.getWidth)(this._$container)
};
this._componentContentSize = {
height: (0, _size.getHeight)(this._component.$content()),
width: (0, _size.getWidth)(this._component.$content())
};
this._contentSize = {
height: (0, _size.getHeight)(this._$content),
width: (0, _size.getWidth)(this._$content)
}
},
_updateScrollbars: function() {
this._eachScrollbar((function(scrollbar, direction) {
var dimension = direction === VERTICAL ? "height" : "width";
scrollbar.option({
containerSize: this._containerSize[dimension],
contentSize: this._componentContentSize[dimension]
});
scrollbar.update()
}))
},
_allowedDirections: function() {
return {
vertical: this._isDirection(VERTICAL) && this._contentSize.height > this._containerSize.height,
horizontal: this._isDirection(HORIZONTAL) && this._contentSize.width > this._containerSize.width
}
},
dispose: function() {
var className = this._$element.get(0).className;
var scrollableNativeRegexp = new RegExp(SCROLLABLE_NATIVE_CLASS + "\\S*", "g");
if (scrollableNativeRegexp.test(className)) {
this._$element.removeClass(className.match(scrollableNativeRegexp).join(" "))
}
_events_engine.default.off(this._$element, "." + SCROLLABLE_NATIVE);
_events_engine.default.off(this._$container, "." + SCROLLABLE_NATIVE);
this._removeScrollbars();
clearTimeout(this._hideScrollbarTimeout)
},
_removeScrollbars: function() {
this._eachScrollbar((function(scrollbar) {
scrollbar.$element().remove()
}))
},
scrollBy: function(distance) {
var location = this.location();
this._$container.scrollTop(Math.round(-location.top - distance.top));
this._$container.scrollLeft(Math.round(-location.left - distance.left))
},
validate: function(e) {
if (this.option("disabled")) {
return false
}
if ((0, _index.isDxMouseWheelEvent)(e) && this._isScrolledInMaxDirection(e)) {
return false
}
return !!this._allowedDirection()
},
_isScrolledInMaxDirection: function(e) {
var container = this._$container.get(0);
var result;
if (e.delta > 0) {
result = e.shiftKey ? !container.scrollLeft : !container.scrollTop
} else if (e.shiftKey) {
result = container.scrollLeft >= this._getMaxOffset().left
} else {
result = container.scrollTop >= this._getMaxOffset().top
}
return result
},
getDirection: function() {
return this._allowedDirection()
}
});
var _default = NativeStrategy;
exports.default = _default;
module.exports = exports.default;
module.exports.default = exports.default;