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LinkPreview: restructure to make it easier to keep old link data

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This commit is contained in:
Brion Vibber 2010-11-16 14:57:35 -08:00
parent 73f28ffabe
commit acdb9ac1e5
1 changed files with 75 additions and 71 deletions
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146
plugins/LinkPreview/linkpreview.js
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@ -62,82 +62,86 @@
}
};
/**
* Find URL links from the source text that may be interesting.
*
* @param {String} text
* @return {Array} list of URLs
*/
function findLinks(text)
{
// @fixme match this to core code
var re = /(?:^| )(https?:\/\/.+?\/.+?)(?= |$)/mg;
var links = [];
var matches;
while ((matches = re.exec(text)) !== null) {
links.push(matches[1]);
}
return links;
}
var LinkPreview = {
links: [],
/**
* Start looking up info for a link preview...
* May start async data loads.
*
* @param {String} id
* @param {String} url
*/
function prepLinkPreview(id, url)
{
oEmbed.lookup(url, function(data) {
var thumb = null;
var width = 100;
if (typeof data.thumbnail_url == "string") {
thumb = data.thumbnail_url;
if (typeof data.thumbnail_width !== "undefined") {
if (data.thumbnail_width < width) {
width = data.thumbnail_width;
/**
* Find URL links from the source text that may be interesting.
*
* @param {String} text
* @return {Array} list of URLs
*/
findLinks: function (text)
{
// @fixme match this to core code
var re = /(?:^| )(https?:\/\/.+?\/.+?)(?= |$)/mg;
var links = [];
var matches;
while ((matches = re.exec(text)) !== null) {
links.push(matches[1]);
}
return links;
},
/**
* Start looking up info for a link preview...
* May start async data loads.
*
* @param {String} id
* @param {String} url
*/
prepLinkPreview: function(id, url)
{
oEmbed.lookup(url, function(data) {
var thumb = null;
var width = 100;
if (typeof data.thumbnail_url == "string") {
thumb = data.thumbnail_url;
if (typeof data.thumbnail_width !== "undefined") {
if (data.thumbnail_width < width) {
width = data.thumbnail_width;
}
}
} else if (data.type == 'photo' && typeof data.url == "string") {
thumb = data.url;
if (typeof data.width !== "undefined") {
if (data.width < width) {
width = data.width;
}
}
}
} else if (data.type == 'photo' && typeof data.url == "string") {
thumb = data.url;
if (typeof data.width !== "undefined") {
if (data.width < width) {
width = data.width;
}
if (thumb) {
var link = $('<span class="inline-attachment"><a><img/></a></span>');
link.find('a')
.attr('href', url)
.attr('target', '_blank')
.last()
.find('img')
.attr('src', thumb)
.attr('width', width)
.attr('title', data.title || data.url || url);
$('#' + id).append(link);
}
}
if (thumb) {
var link = $('<span class="inline-attachment"><a><img/></a></span>');
link.find('a')
.attr('href', url)
.attr('target', '_blank')
.last()
.find('img')
.attr('src', thumb)
.attr('width', width)
.attr('title', data.title || data.url || url);
$('#' + id).append(link);
}
});
}
});
},
/**
* Update the live preview section with links found in the given text.
* May start async data loads.
*
* @param {String} text: free-form input text
*/
function previewLinks(text)
{
var links = findLinks(text);
$('#link-preview').html('');
for (var i = 0; i < links.length; i++) {
var id = 'link-preview-' + i;
$('#link-preview').append('<span id="' + id + '"></span>');
prepLinkPreview(id, links[i]);
/**
* Update the live preview section with links found in the given text.
* May start async data loads.
*
* @param {String} text: free-form input text
*/
previewLinks: function(text)
{
var links = LinkPreview.findLinks(text);
$('#link-preview').html('');
for (var i = 0; i < links.length; i++) {
var id = 'link-preview-' + i;
$('#link-preview').append('<span id="' + id + '"></span>');
LinkPreview.prepLinkPreview(id, links[i]);
}
}
}
};
SN.Init.LinkPreview = function(params) {
if (params.api) oEmbed.api = params.api;
@ -149,7 +153,7 @@
// Piggyback on the counter update...
var origCounter = SN.U.Counter;
SN.U.Counter = function(form) {
previewLinks($('#notice_data-text').val());
LinkPreview.previewLinks($('#notice_data-text').val());
return origCounter(form);
}
}