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e97c6f52ce
In Firefox, prevents e.g. a slash in a stream name, which we wanted to store as %2F, from converting back to a literal slash. There is some appeal to normalizing the URL fragment after parsing, but in general this way seems better. It may decrease page load time on narrowed views. Doesn't yet fix #826; the URL is correct but the narrow is still wrong. (imported from commit 32e3fa9e968139863f34b9698f1c8b39d06f0c14)
97 lines
2.8 KiB
JavaScript
97 lines
2.8 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 = viewport.scrollTop();
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window.location.hash = newhash;
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util.reset_favicon();
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if (newhash === "" || newhash === "#") {
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viewport.scrollTop(scrolltop);
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}
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};
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exports.save_narrow = function (operators) {
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if (operators === undefined) {
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exports.changehash('#');
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} else {
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var new_hash = '#narrow';
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$.each(operators, function (idx, elem) {
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new_hash += '/' + encodeURIComponent(elem[0])
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+ '/' + encodeURIComponent(elem[1]);
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});
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exports.changehash(new_hash);
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}
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};
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function parse_narrow(hash) {
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var i, operators = [];
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for (i=1; i<hash.length; i+=2) {
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// We don't construct URLs with an odd number of components,
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// but the user might write one.
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var operator = decodeURIComponent(hash[i]);
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var operand = decodeURIComponent(hash[i+1] || '');
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operators.push([operator, operand]);
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}
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var new_selection;
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if (current_msg_list.selected_id() !== -1) {
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new_selection = current_msg_list.selected_id();
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} else {
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new_selection = initial_pointer;
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}
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narrow.activate(operators, {
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then_select_id: new_selection,
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change_hash: false // already set
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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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parse_narrow(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.deactivate();
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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(current_msg_list);
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}
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};
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return exports;
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}());
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