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Bug 368252: notify observers when a microsummary gets updatedr=sspitzersr=mconnor

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myk@mozilla.org 2007-04-27 13:37:52 -07:00
parent 2cd4a80d9d
commit aa4de4e765
2 changed files with 66 additions and 4 deletions
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15
browser/components/microsummaries/public/nsIMicrosummaryService.idl
View File

@ -338,3 +338,18 @@ interface nsIMicrosummaryService : nsISupports
*/
nsIMicrosummary refreshMicrosummary(in nsISupports bookmarkID);
};
[scriptable, uuid(f9e577a8-19d9-4ca0-a140-b9e43f014470)]
interface nsILiveTitleNotificationSubject : nsISupports
{
// The ID of the bookmark displaying this title.
// Note: in the old bookmarks code, this is an RDF resource. In Places
// it is currently a URI, but after the fix for bug 360133 lands it will
// become an integer.
readonly attribute nsISupports bookmarkID;
// The microsummary being displayed as the live title for the bookmark.
// The actual value of the microsummary (i.e. the string that gets displayed
// to the user) is stored in the content property of this object.
readonly attribute nsIMicrosummary microsummary;
};

55
browser/components/microsummaries/src/nsMicrosummaryService.js
View File

@ -296,12 +296,35 @@ MicrosummaryService.prototype = {
},
_updateMicrosummary: function MSS__updateMicrosummary(bookmarkID, microsummary) {
this._setField(bookmarkID, FIELD_GENERATED_TITLE, microsummary.content);
// Get the current live title to see if it's actually changed.
var oldValue = this._getField(bookmarkID, FIELD_GENERATED_TITLE);
// A string identifying the bookmark to use when logging the update.
var bookmarkIdentity =
#ifdef MOZ_PLACES_BOOKMARKS
bookmarkID.spec;
#else
bookmarkID.Value + " (" + microsummary.pageURI.spec + ")";
#endif
if (oldValue == null || oldValue != microsummary.content) {
this._setField(bookmarkID, FIELD_GENERATED_TITLE, microsummary.content);
var subject = new LiveTitleNotificationSubject(bookmarkID, microsummary);
LOG("updated live title for " + bookmarkIdentity +
" from '" + (oldValue == null ? "<no live title>" : oldValue) +
"' to '" + microsummary.content + "'");
this._obs.notifyObservers(subject, "microsummary-livetitle-updated", oldValue);
}
else {
LOG("didn't update live title for " + bookmarkIdentity + "; it hasn't changed");
}
// Whether or not the title itself has changed, we still save any changes
// to the update interval, since the interval represents how long to wait
// before checking again for updates, and that can vary across updates,
// even when the title itself hasn't changed.
this._setField(bookmarkID, FIELD_MICSUM_EXPIRATION,
Date.now() + (microsummary.updateInterval || this._updateInterval));
LOG("updated microsummary for page " + microsummary.pageURI.spec +
" to " + microsummary.content);
},
/**
@ -1099,6 +1122,30 @@ MicrosummaryService.prototype = {
function LiveTitleNotificationSubject(bookmarkID, microsummary) {
this.bookmarkID = bookmarkID;
this.microsummary = microsummary;
}
LiveTitleNotificationSubject.prototype = {
bookmarkID: null,
microsummary: null,
interfaces: [Ci.nsILiveTitleNotificationSubject, Ci.nsISupports],
// nsISupports
QueryInterface: function (iid) {
if (!this.interfaces.some( function(v) { return iid.equals(v) } ))
throw Components.results.NS_ERROR_NO_INTERFACE;
return this;
}
};
function Microsummary(aPageURI, aGenerator) {
this._observers = [];
this._pageURI = aPageURI || null;