forked from GNUsocial/gnu-social
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Brion Vibber
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201
js/util.js
201
js/util.js
@ -19,7 +19,8 @@
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* @package StatusNet
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* @author Sarven Capadisli <csarven@status.net>
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2009 StatusNet, Inc.
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* @author Brion Vibber <brion@status.net>
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* @copyright 2009,2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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@ -33,6 +34,14 @@ var SN = { // StatusNet
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HTTP20x30x: [200, 201, 202, 203, 204, 205, 206, 300, 301, 302, 303, 304, 305, 306, 307]
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},
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/**
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* @fixme are these worth the trouble? They seem to mostly just duplicate
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* themselves while slightly obscuring the actual selector, so it's hard
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* to pop over to the HTML and find something.
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*
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* In theory, minification could reduce them to shorter variable names,
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* but at present that doesn't happen with yui-compressor.
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*/
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S: { // Selector
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Disabled: 'disabled',
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Warning: 'warning',
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@ -59,7 +68,25 @@ var SN = { // StatusNet
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}
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},
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/**
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* Map of localized message strings exported to script from the PHP
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* side via Action::getScriptMessages().
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*
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* Retrieve them via SN.msg(); this array is an implementation detail.
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*
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* @access private
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*/
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messages: {},
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/**
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* Grabs a localized string that's been previously exported to us
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* from server-side code via Action::getScriptMessages().
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*
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* @example alert(SN.msg('coolplugin-failed'));
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*
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* @param {String} key: string key name to pull from message index
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* @return matching localized message string
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*/
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msg: function(key) {
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if (typeof SN.messages[key] == "undefined") {
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return '[' + key + ']';
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@ -69,6 +96,14 @@ var SN = { // StatusNet
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},
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U: { // Utils
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/**
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* Setup function -- DOES NOT trigger actions immediately.
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*
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* Sets up event handlers on the new notice form.
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*
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* @param {jQuery} form: jQuery object whose first matching element is the form
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* @access private
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*/
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FormNoticeEnhancements: function(form) {
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if (jQuery.data(form[0], 'ElementData') === undefined) {
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MaxLength = form.find('#'+SN.C.S.NoticeTextCount).text();
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@ -111,6 +146,17 @@ var SN = { // StatusNet
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}
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},
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/**
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* To be called from keydown event handler on the notice import form.
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* Checks if return or enter key was pressed, and if so attempts to
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* submit the form and cancel standard processing of the enter key.
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*
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* @param {Event} event
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* @param {jQuery} el: jQuery object whose first element is the notice posting form
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*
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* @return {boolean} whether to cancel the event? Does this actually pass through?
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* @access private
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*/
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SubmitOnReturn: function(event, el) {
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if (event.keyCode == 13 || event.keyCode == 10) {
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el.submit();
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@ -123,6 +169,20 @@ var SN = { // StatusNet
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return true;
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},
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/**
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* To be called from event handlers on the notice import form.
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* Triggers an update of the remaining-characters counter.
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*
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* Additional counter updates will be suppressed during the
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* next half-second to avoid flooding the layout engine with
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* updates, followed by another automatic check.
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*
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* The maximum length is pulled from data established by
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* FormNoticeEnhancements.
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*
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* @param {jQuery} form: jQuery object whose first element is the notice posting form
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* @access private
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*/
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Counter: function(form) {
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SN.C.I.FormNoticeCurrent = form;
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@ -156,10 +216,24 @@ var SN = { // StatusNet
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}
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},
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/**
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* Pull the count of characters in the current edit field.
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* Plugins replacing the edit control may need to override this.
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*
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* @param {jQuery} form: jQuery object whose first element is the notice posting form
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* @return number of chars
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*/
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CharacterCount: function(form) {
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return form.find('#'+SN.C.S.NoticeDataText).val().length;
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},
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/**
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* Called internally after the counter update blackout period expires;
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* runs another update to make sure we didn't miss anything.
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*
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* @param {jQuery} form: jQuery object whose first element is the notice posting form
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* @access private
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*/
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ClearCounterBlackout: function(form) {
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// Allow keyup events to poke the counter again
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SN.C.I.CounterBlackout = false;
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@ -167,6 +241,22 @@ var SN = { // StatusNet
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SN.U.Counter(form);
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},
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/**
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* Grabs form data and submits it asynchronously, with 'ajax=1'
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* parameter added to the rest.
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*
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* If a successful response includes another form, that form
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* will be extracted and copied in, replacing the original form.
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* If there's no form, the first paragraph will be used.
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*
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* @fixme can sometimes explode confusingly if returnd data is bogus
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* @fixme error handling is pretty vague
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* @fixme can't submit file uploads
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*
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* @param {jQuery} form: jQuery object whose first element is a form
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*
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* @access public
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*/
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FormXHR: function(form) {
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$.ajax({
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type: 'POST',
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@ -195,6 +285,33 @@ var SN = { // StatusNet
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});
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},
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/**
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* Setup function -- DOES NOT trigger actions immediately.
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*
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* Sets up event handlers for special-cased async submission of the
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* notice-posting form, including some pre-post validation.
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*
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* Unlike FormXHR() this does NOT submit the form immediately!
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* It sets up event handlers so that any method of submitting the
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* form (click on submit button, enter, submit() etc) will trigger
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* it properly.
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*
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* Also unlike FormXHR(), this system will use a hidden iframe
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* automatically to handle file uploads via <input type="file">
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* controls.
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*
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* @fixme tl;dr
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* @fixme vast swaths of duplicate code and really long variable names clutter this function up real bad
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* @fixme error handling is unreliable
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* @fixme cookieValue is a global variable, but probably shouldn't be
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* @fixme saving the location cache cookies should be split out
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* @fixme some error messages are hardcoded english: needs i18n
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* @fixme special-case for bookmarklet is confusing and uses a global var "self". Is this ok?
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*
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* @param {jQuery} form: jQuery object whose first element is a form
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*
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* @access public
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*/
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FormNoticeXHR: function(form) {
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SN.C.I.NoticeDataGeo = {};
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form.append('<input type="hidden" name="ajax" value="1"/>');
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@ -340,9 +457,17 @@ var SN = { // StatusNet
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});
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},
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/**
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* Fetch an XML DOM from an XHR's response data.
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*
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* Works around unavailable responseXML when document.domain
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* has been modified by Meteor or other tools, in some but not
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* all browsers.
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*
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* @param {XMLHTTPRequest} xhr
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* @return DOMDocument
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*/
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GetResponseXML: function(xhr) {
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// Work around unavailable responseXML when document.domain
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// has been modified by Meteor or other tools.
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try {
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return xhr.responseXML;
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} catch (e) {
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@ -350,12 +475,39 @@ var SN = { // StatusNet
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}
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},
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/**
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* Setup function -- DOES NOT trigger actions immediately.
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*
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* Sets up event handlers on all visible notice's reply buttons to
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* tweak the new-notice form with needed variables and focus it
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* when pushed.
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*
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* (This replaces the default reply button behavior to submit
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* directly to a form which comes back with a specialized page
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* with the form data prefilled.)
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*
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* @access private
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*/
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NoticeReply: function() {
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if ($('#'+SN.C.S.NoticeDataText).length > 0 && $('#content .notice_reply').length > 0) {
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$('#content .notice').each(function() { SN.U.NoticeReplyTo($(this)); });
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}
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},
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/**
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* Setup function -- DOES NOT trigger actions immediately.
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*
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* Sets up event handlers on the given notice's reply button to
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* tweak the new-notice form with needed variables and focus it
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* when pushed.
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*
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* (This replaces the default reply button behavior to submit
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* directly to a form which comes back with a specialized page
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* with the form data prefilled.)
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*
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* @param {jQuery} notice: jQuery object containing one or more notices
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* @access private
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*/
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NoticeReplyTo: function(notice) {
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notice.find('.notice_reply').live('click', function() {
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var nickname = ($('.author .nickname', notice).length > 0) ? $($('.author .nickname', notice)[0]) : $('.author .nickname.uid');
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@ -364,6 +516,16 @@ var SN = { // StatusNet
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});
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},
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/**
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* Updates the new notice posting form with bits for replying to the
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* given user. Adds replyto parameter to the form, and a "@foo" to the
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* text area.
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*
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* @fixme replyto is a global variable, but probably shouldn't be
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*
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* @param {String} nick
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* @param {String} id
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*/
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NoticeReplySet: function(nick,id) {
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if (nick.match(SN.C.I.PatternUsername)) {
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var text = $('#'+SN.C.S.NoticeDataText);
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@ -381,11 +543,25 @@ var SN = { // StatusNet
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}
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},
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/**
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* Setup function -- DOES NOT apply immediately.
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*
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* Sets up event handlers for favor/disfavor forms to submit via XHR.
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* Uses 'live' rather than 'bind', so applies to future as well as present items.
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*/
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NoticeFavor: function() {
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$('.form_favor').live('click', function() { SN.U.FormXHR($(this)); return false; });
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$('.form_disfavor').live('click', function() { SN.U.FormXHR($(this)); return false; });
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},
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/**
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* Setup function -- DOES NOT trigger actions immediately.
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*
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* Sets up event handlers for repeat forms to toss up a confirmation
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* popout before submitting.
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*
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* Uses 'live' rather than 'bind', so applies to future as well as present items.
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*/
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NoticeRepeat: function() {
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$('.form_repeat').live('click', function(e) {
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e.preventDefault();
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@ -395,6 +571,22 @@ var SN = { // StatusNet
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});
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},
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/**
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* Shows a confirmation dialog box variant of the repeat button form.
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* This seems to use a technique where the repeat form contains
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* _both_ a standalone button _and_ text and buttons for a dialog.
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* The dialog will close after its copy of the form is submitted,
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* or if you click its 'close' button.
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*
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* The dialog is created by duplicating the original form and changing
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* its style; while clever, this is hard to generalize and probably
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* duplicates a lot of unnecessary HTML output.
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*
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* @fixme create confirmation dialogs through a generalized interface
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* that can be reused instead of hardcoded text and styles.
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*
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* @param {jQuery} form
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*/
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NoticeRepeatConfirmation: function(form) {
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var submit_i = form.find('.submit');
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@ -428,6 +620,9 @@ var SN = { // StatusNet
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});
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},
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/**
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* Setup function -- DOES NOT trigger actions immediately.
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*/
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NoticeAttachments: function() {
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$('.notice a.attachment').each(function() {
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SN.U.NoticeWithAttachment($(this).closest('.notice'));
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