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update lazy loader

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This commit is contained in:
Luke Pulverenti 2016-11-16 01:00:28 -05:00
parent 0291450ffb
commit 71b0be28b8
8 changed files with 226 additions and 126 deletions
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87
dashboard-ui/bower_components/emby-webcomponents/lazyloader/lazyloader-intersectionobserver.js vendored Normal file
View file

@ -0,0 +1,87 @@
define(['visibleinviewport', 'browser', 'dom'], function (visibleinviewport, browser, dom) {
'use strict';
function LazyLoader(options) {
this.options = options;
}
LazyLoader.prototype.createObserver = function () {
var observerOptions = {};
var options = this.options;
var loadedCount = 0;
var callback = options.callback;
//options.rootMargin = "300%";
var self = this;
var observer = new IntersectionObserver(function (entries) {
for (var j = 0, length2 = entries.length; j < length2; j++) {
var entry = entries[j];
var target = entry.target;
observer.unobserve(target);
callback(target);
loadedCount++;
if (loadedCount >= self.elementCount) {
self.destroyObserver();
}
}
},
observerOptions
);
this.observer = observer;
};
LazyLoader.prototype.addElements = function (elements) {
var observer = this.observer;
if (!observer) {
this.createObserver();
observer = this.observer;
}
this.elementCount = (this.elementCount || 0) + elements.length;
for (var i = 0, length = elements.length; i < length; i++) {
observer.observe(elements[i]);
}
};
LazyLoader.prototype.destroyObserver = function (elements) {
var observer = this.observer;
if (observer) {
observer.disconnect();
this.observer = null;
}
};
LazyLoader.prototype.destroy = function (elements) {
this.destroyObserver();
this.options = null;
};
function unveilElements(elements, root, callback) {
if (!elements.length) {
return;
}
var lazyLoader = new LazyLoader({
callback: callback
});
lazyLoader.addElements(elements);
}
LazyLoader.lazyChildren = function (elem, callback) {
unveilElements(elem.getElementsByClassName('lazy'), elem, callback);
}
return LazyLoader;
});

113
dashboard-ui/bower_components/emby-webcomponents/images/lazyloader.js → dashboard-ui/bower_components/emby-webcomponents/lazyloader/lazyloader-scroll.js vendored
View file

@ -8,16 +8,6 @@ define(['visibleinviewport', 'browser', 'dom'], function (visibleinviewport, bro
fn();
};
var supportsIntersectionObserver = function () {
if (window.IntersectionObserver) {
return true;
}
return false;
}();
function resetThresholds() {
var x = screen.availWidth;
@ -32,11 +22,9 @@ define(['visibleinviewport', 'browser', 'dom'], function (visibleinviewport, bro
thresholdY = y;
}
if (!supportsIntersectionObserver) {
dom.addEventListener(window, "orientationchange", resetThresholds, { passive: true });
dom.addEventListener(window, 'resize', resetThresholds, { passive: true });
resetThresholds();
}
dom.addEventListener(window, "orientationchange", resetThresholds, { passive: true });
dom.addEventListener(window, 'resize', resetThresholds, { passive: true });
resetThresholds();
function isVisible(elem) {
return visibleinviewport(elem, true, thresholdX, thresholdY);
@ -52,50 +40,18 @@ define(['visibleinviewport', 'browser', 'dom'], function (visibleinviewport, bro
}
}
function unveilWithIntersection(elements, root, callback) {
var filledCount = 0;
var options = {};
//options.rootMargin = "300%";
var observer = new IntersectionObserver(function (entries) {
for (var j = 0, length2 = entries.length; j < length2; j++) {
var entry = entries[j];
var target = entry.target;
observer.unobserve(target);
callback(target);
filledCount++;
}
},
options
);
// Start observing an element
for (var i = 0, length = elements.length; i < length; i++) {
observer.observe(elements[i]);
}
}
function unveilElements(elements, root, callback) {
if (!elements.length) {
return;
}
if (supportsIntersectionObserver) {
unveilWithIntersection(elements, root, callback);
return;
}
function unveilElementsInternal(instance, callback) {
var unveiledElements = [];
var cancellationTokens = [];
var loadedCount = 0;
function unveilInternal(tokenIndex) {
var anyFound = false;
var out = false;
var elements = instance.elements;
// TODO: This out construct assumes left to right, top to bottom
for (var i = 0, length = elements.length; i < length; i++) {
@ -111,6 +67,7 @@ define(['visibleinviewport', 'browser', 'dom'], function (visibleinviewport, bro
anyFound = true;
unveiledElements[i] = true;
callback(elem);
loadedCount++;
} else {
if (anyFound) {
@ -119,7 +76,7 @@ define(['visibleinviewport', 'browser', 'dom'], function (visibleinviewport, bro
}
}
if (!elements.length) {
if (loadedCount >= elements.length) {
dom.removeEventListener(document, 'focus', unveil, {
capture: true,
passive: true
@ -171,12 +128,58 @@ define(['visibleinviewport', 'browser', 'dom'], function (visibleinviewport, bro
unveil();
}
function lazyChildren(elem, callback) {
function LazyLoader(options) {
this.options = options;
}
LazyLoader.prototype.createObserver = function () {
unveilElementsInternal(this, this.options.callback);
this.observer = 1;
};
LazyLoader.prototype.addElements = function (elements) {
this.elements = this.elements || [];
for (var i = 0, length = elements.length; i < length; i++) {
this.elements.push(elements[i]);
}
var observer = this.observer;
if (!observer) {
this.createObserver();
}
};
LazyLoader.prototype.destroyObserver = function (elements) {
};
LazyLoader.prototype.destroy = function (elements) {
this.destroyObserver();
this.options = null;
};
function unveilElements(elements, root, callback) {
if (!elements.length) {
return;
}
var lazyLoader = new LazyLoader({
callback: callback
});
lazyLoader.addElements(elements);
}
LazyLoader.lazyChildren = function (elem, callback) {
unveilElements(elem.getElementsByClassName('lazy'), elem, callback);
}
self.lazyChildren = lazyChildren;
return self;
return LazyLoader;
});

6
dashboard-ui/bower_components/emby-webcomponents/usersettings/usersettingsbuilder.js vendored
View file

@ -7,9 +7,14 @@ define(['appSettings', 'events', 'browser'], function (appsettings, events, brow
var currentUserId;
var currentApiClient;
var displayPrefs;
var saveTimeout;
self.setUserInfo = function (userId, apiClient) {
if (saveTimeout) {
clearTimeout(saveTimeout);
}
currentUserId = userId;
currentApiClient = apiClient;
@ -24,7 +29,6 @@ define(['appSettings', 'events', 'browser'], function (appsettings, events, brow
});
};
var saveTimeout;
function onSaveTimeout() {
saveTimeout = null;
currentApiClient.updateDisplayPreferences('usersettings', displayPrefs, currentUserId, 'emby');