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fixes: http://meta.discourse.org/t/discourse-logo-link-back-to-top-of-thread-list-on-home-page/3592

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This commit is contained in:
Robin Ward 2013-02-26 15:17:52 -05:00
parent 1caf1e6b45
commit 1492464158
1 changed files with 31 additions and 15 deletions
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46
app/assets/javascripts/discourse/components/url.js
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@ -7,6 +7,12 @@
**/
Discourse.URL = {
// Used for matching a topic
TOPIC_REGEXP: /\/t\/([^\/]+)\/(\d+)\/?(\d+)?/,
// Used for matching a /more URL
MORE_REGEXP: /\/more$/,
/**
Browser aware replaceState. Will only be invoked if the browser supports it.
@ -37,31 +43,41 @@ Discourse.URL = {
@param {String} path The path we are routing to.
**/
routeTo: function(path) {
var newMatches, newTopicId, oldMatches, oldTopicId, opts, router, topicController, topicRegexp;
var oldPath = window.location.pathname;
path = path.replace(/https?\:\/\/[^\/]+/, '');
console.log("route to: " + path);
// If we're in the same topic, don't push the state
topicRegexp = /\/t\/([^\/]+)\/(\d+)\/?(\d+)?/;
newMatches = topicRegexp.exec(path);
newTopicId = newMatches ? newMatches[2] : null;
/*
If the URL is in the topic form, /t/something/:topic_id/:post_number
then we want to apply some special logic. If the post_number changes within the
same topic, use replaceState and instruct our controller to load more posts.
*/
var newMatches = this.TOPIC_REGEXP.exec(path);
var newTopicId = newMatches ? newMatches[2] : null;
if (newTopicId) {
oldMatches = topicRegexp.exec(window.location.pathname);
if ((oldTopicId = oldMatches ? oldMatches[2] : void 0) && (oldTopicId === newTopicId)) {
var oldMatches = this.TOPIC_REGEXP.exec(oldPath);
var oldTopicId = oldMatches ? oldMatches[2] : null;
// If the topic_id is the same
if (oldTopicId === newTopicId) {
Discourse.URL.replaceState(path);
topicController = Discourse.__container__.lookup('controller:topic');
opts = { trackVisit: false };
if (newMatches[3]) {
opts.nearPost = newMatches[3];
}
var topicController = Discourse.__container__.lookup('controller:topic');
var opts = { trackVisit: false };
if (newMatches[3]) opts.nearPost = newMatches[3];
topicController.get('content').loadPosts(opts);
// Abort routing, we have replaced our state.
return;
}
}
// If we transition from a /more path, scroll to the top
if (this.MORE_REGEXP.exec(oldPath) && (!this.MORE_REGEXP.exec(path))) {
window.scrollTo(0, 0);
}
// Be wary of looking up the router. In this case, we have links in our
// HTML, say form compiled markdown posts, that need to be routed.
router = Discourse.__container__.lookup('router:main');
var router = Discourse.__container__.lookup('router:main');
router.router.updateURL(path);
return router.handleURL(path);
}