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/* -*- Mode: JavaScript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
const activityManager = Cc["@mozilla.org/activity-manager;1"].getService(
Ci.nsIActivityManager
);
var ACTIVITY_LIMIT = 250;
var activityObject = {
_activityMgrListener: null,
_activitiesView: null,
_activityLogger: console.createInstance({
prefix: "mail.activity",
maxLogLevel: "Warn",
maxLogLevelPref: "mail.activity.loglevel",
}),
_ignoreNotifications: false,
_groupCache: new Map(),
// Utility Functions for Activity element management
/**
* Creates the proper element for the given activity
*/
createActivityWidget(type) {
let element = document.createElement("li", {
is: type.bindingName,
});
if (element) {
element.setAttribute("actID", type.id);
}
return element;
},
/**
* Returns the activity group element that matches the context_type
* and context of the given activity, if any.
*/
getActivityGroupElementByContext(aContextType, aContextObj) {
return this._groupCache.get(aContextType + ":" + aContextObj);
},
/**
* Inserts the given element into the correct position on the
* activity manager window.
*/
placeActivityElement(element) {
if (element.isGroup || element.isProcess) {
this._activitiesView.insertBefore(
element,
this._activitiesView.firstElementChild
);
} else {
let next = this._activitiesView.firstElementChild;
while (next && (next.isWarning || next.isProcess || next.isGroup)) {
next = next.nextElementSibling;
}
if (next) {
this._activitiesView.insertBefore(element, next);
} else {
this._activitiesView.appendChild(element);
}
}
if (element.isGroup) {
this._groupCache.set(
element.contextType + ":" + element.contextObj,
element
);
}
while (this._activitiesView.children.length > ACTIVITY_LIMIT) {
this.removeActivityElement(
this._activitiesView.lastElementChild.getAttribute("actID")
);
}
},
/**
* Adds a new element to activity manager window for the
* given activity. It is called by ActivityMgrListener when
* a new activity is added into the activity manager's internal
* list.
*/
addActivityElement(aID, aActivity) {
try {
this._activityLogger.info(`Adding ActivityElement: ${aID}, ${aActivity}`);
// get |groupingStyle| of the activity. Grouping style determines
// whether we show the activity standalone or grouped by context in
// the activity manager window.
let isGroupByContext =
aActivity.groupingStyle == Ci.nsIActivity.GROUPING_STYLE_BYCONTEXT;
// find out if an activity group has already been created for this context
let group = null;
if (isGroupByContext) {
group = this.getActivityGroupElementByContext(
aActivity.contextType,
aActivity.contextObj
);
// create a group if it's not already created.
if (!group) {
group = document.createElement("li", {
is: "activity-group-item",
});
this._activityLogger.info("created group element");
// Set the context type and object of the newly created group
group.contextType = aActivity.contextType;
group.contextObj = aActivity.contextObj;
group.contextDisplayText = aActivity.contextDisplayText;
// add group into the list
this.placeActivityElement(group);
}
}
// create the appropriate element for the activity
let actElement = this.createActivityWidget(aActivity);
this._activityLogger.info("created activity element");
if (group) {
// get the inner list element of the group
let groupView = group.querySelector(".activitygroup-list");
groupView.appendChild(actElement);
} else {
this.placeActivityElement(actElement);
}
} catch (e) {
this._activityLogger.error("addActivityElement: " + e);
throw e;
}
},
/**
* Removes the activity element from the activity manager window.
* It is called by ActivityMgrListener when the activity in question
* is removed from the activity manager's internal list.
*/
removeActivityElement(aID) {
this._activityLogger.info("removing Activity ID: " + aID);
let item = this._activitiesView.querySelector(`[actID="${aID}"]`);
if (item) {
let group = item.closest(".activitygroup");
item.remove();
if (group && !group.querySelector(".activityitem")) {
// Empty group is removed.
this._groupCache.delete(group.contextType + ":" + group.contextObj);
group.remove();
}
}
},
// -----------------
// Startup, Shutdown
startup() {
try {
this._activitiesView = document.getElementById("activityView");
let activities = activityManager.getActivities();
for (
let iActivity = Math.max(0, activities.length - ACTIVITY_LIMIT);
iActivity < activities.length;
iActivity++
) {
let activity = activities[iActivity];
this.addActivityElement(activity.id, activity);
}
// start listening changes in the activity manager's
// internal list
this._activityMgrListener = new this.ActivityMgrListener();
activityManager.addListener(this._activityMgrListener);
} catch (e) {
this._activityLogger.error("Exception: " + e);
}
},
rebuild() {
let activities = activityManager.getActivities();
for (let activity of activities) {
this.addActivityElement(activity.id, activity);
}
},
shutdown() {
activityManager.removeListener(this._activityMgrListener);
},
// -----------------
// Utility Functions
/**
* Remove all activities not in-progress from the activity list.
*/
clearActivityList() {
this._activityLogger.debug("clearActivityList");
this._ignoreNotifications = true;
// If/when we implement search, we'll want to remove just the items
// that are on the search display, however for now, we'll just clear up
// everything.
activityManager.cleanUp();
while (this._activitiesView.lastChild) {
this._activitiesView.lastChild.remove();
}
this._groupCache.clear();
this.rebuild();
this._ignoreNotifications = false;
this._activitiesView.focus();
},
};
// An object to monitor nsActivityManager operations. This class acts as
// binding layer between nsActivityManager and nsActivityManagerUI objects.
activityObject.ActivityMgrListener = function () {};
activityObject.ActivityMgrListener.prototype = {
onAddedActivity(aID, aActivity) {
activityObject._activityLogger.info(`added activity: ${aID} ${aActivity}`);
if (!activityObject._ignoreNotifications) {
activityObject.addActivityElement(aID, aActivity);
}
},
onRemovedActivity(aID) {
if (!activityObject._ignoreNotifications) {
activityObject.removeActivityElement(aID);
}
},
};
window.addEventListener("load", () => activityObject.startup());
window.addEventListener("unload", () => activityObject.shutdown());
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