mirror of https://github.com/zulip/zulip.git
66 lines
1.7 KiB
JavaScript
66 lines
1.7 KiB
JavaScript
var hashchange = (function () {
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var exports = {};
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var expected_hash = false;
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exports.changehash = function (newhash) {
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expected_hash = newhash;
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// Some browsers reset scrollTop when changing the hash to "",
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// so we save and restore it.
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// http://stackoverflow.com/questions/4715073/window-location-hash-prevent-scrolling-to-the-top
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var scrolltop;
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if (newhash === "") {
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scrolltop = viewport.scrollTop();
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}
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window.location.hash = newhash;
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util.reset_favicon();
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if (newhash === "") {
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viewport.scrollTop(scrolltop);
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}
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};
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// Returns true if this function performed a narrow
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function hashchanged() {
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// If window.location.hash changed because our app explicitly
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// changed it, then we don't need to do anything.
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// (This function only neds to jump into action if it changed
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// because e.g. the back button was pressed by the user)
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if (window.location.hash === expected_hash) {
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return false;
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}
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var hash = window.location.hash.split("/");
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switch (hash[0]) {
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case "#narrow":
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ui.change_tab_to("#home");
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narrow.hashchanged(hash);
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ui.update_floating_recipient_bar();
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return true;
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case "":
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case "#":
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ui.change_tab_to("#home");
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narrow.show_all_messages();
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ui.update_floating_recipient_bar();
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break;
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case "#subscriptions":
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ui.change_tab_to("#subscriptions");
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break;
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case "#settings":
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ui.change_tab_to("#settings");
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break;
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}
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return false;
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}
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exports.initialize = function () {
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window.onhashchange = hashchanged;
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if (hashchanged()) {
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load_more_messages();
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}
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};
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return exports;
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}());
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