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-/* 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/. */
-
-var widgets = require('widget');
-var pageMod = require('page-mod');
-var data = require('self').data;
-var panels = require('panel');
-var simpleStorage = require('simple-storage');
-var notifications = require("notifications");
-var privateBrowsing = require('private-browsing');
-
-/*
-Global variables
-* Boolean to indicate whether the add-on is switched on or not
-* Array for all workers associated with the 'selector' page mod
-* Array for all workers associated with the 'matcher' page mod
-*/
-var annotatorIsOn = false;
-var selectors = [];
-var matchers = [];
-
-if (!simpleStorage.storage.annotations)
- simpleStorage.storage.annotations = [];
-
-/*
-Update the matchers: call this whenever the set of annotations changes
-*/
-function updateMatchers() {
- matchers.forEach(function (matcher) {
- matcher.postMessage(simpleStorage.storage.annotations);
- });
-}
-
-/*
-You can add annotations iff the add-on is on AND private browsing is off
-*/
-function canEnterAnnotations() {
- return (annotatorIsOn && !privateBrowsing.isActive);
-}
-
-/*
-Constructor for an Annotation object
-*/
-function Annotation(annotationText, anchor) {
- this.annotationText = annotationText;
- this.url = anchor[0];
- this.ancestorId = anchor[1];
- this.anchorText = anchor[2];
-}
-
-/*
-Function to deal with a new annotation.
-Create a new annotation object, store it, and
-notify all the annotators of the change.
-*/
-function handleNewAnnotation(annotationText, anchor) {
- var newAnnotation = new Annotation(annotationText, anchor);
- simpleStorage.storage.annotations.push(newAnnotation);
- updateMatchers();
-}
-
-/*
-Function to tell the selector page mod that the add-on has become (in)active
-*/
-function activateSelectors() {
- selectors.forEach(
- function (selector) {
- selector.postMessage(canEnterAnnotations());
- });
-}
-
-/*
-Toggle activation: update the on/off state and notify the selectors.
-Toggling activation is disabled when private browsing is on.
-*/
-function toggleActivation() {
- if (privateBrowsing.isActive) {
- return false;
- }
- annotatorIsOn = !annotatorIsOn;
- activateSelectors();
- return canEnterAnnotations();
-}
-
-function detachWorker(worker, workerArray) {
- var index = workerArray.indexOf(worker);
- if(index != -1) {
- workerArray.splice(index, 1);
- }
-}
-
-exports.main = function() {
-
-/*
-The widget provides a mechanism to switch the selector on or off, and to
-view the list of annotations.
-
-The selector is switched on/off with a left-click, and the list of annotations
-is displayed on a right-click.
-*/
- var widget = widgets.Widget({
- id: 'toggle-switch',
- label: 'Annotator',
- contentURL: data.url('widget/pencil-off.png'),
- contentScriptWhen: 'ready',
- contentScriptFile: data.url('widget/widget.js')
- });
-
- widget.port.on('left-click', function() {
- console.log('activate/deactivate');
- widget.contentURL = toggleActivation() ?
- data.url('widget/pencil-on.png') :
- data.url('widget/pencil-off.png');
- });
-
- widget.port.on('right-click', function() {
- console.log('show annotation list');
- annotationList.show();
- });
-
-/*
-The selector page-mod enables the user to select page elements to annotate.
-
-It is attached to all pages but only operates if the add-on is active.
-
-The content script highlights any page elements which can be annotated. If the
-user clicks a highlighted element it sends a message to the add-on containing
-information about the element clicked, which is called the anchor of the
-annotation.
-
-When we receive this message we assign the anchor to the annotationEditor and
-display it.
-*/
- var selector = pageMod.PageMod({
- include: ['*'],
- contentScriptWhen: 'ready',
- contentScriptFile: [data.url('jquery-1.4.2.min.js'),
- data.url('selector.js')],
- onAttach: function(worker) {
- worker.postMessage(canEnterAnnotations());
- selectors.push(worker);
- worker.port.on('show', function(data) {
- annotationEditor.annotationAnchor = data;
- annotationEditor.show();
- });
- worker.on('detach', function () {
- detachWorker(this, selectors);
- });
- }
- });
-
-/*
-The annotationEditor panel is the UI component used for creating
-new annotations. It contains a text area for the user to
-enter the annotation.
-
-When we are ready to display the editor we assign its 'anchor' property
-and call its show() method.
-
-Its content script sends the content of the text area to the add-on
-when the user presses the return key.
-
-When we receives this message we create a new annotation using the anchor
-and the text the user entered, store it, and hide the panel.
-*/
- var annotationEditor = panels.Panel({
- width: 220,
- height: 220,
- contentURL: data.url('editor/annotation-editor.html'),
- contentScriptFile: data.url('editor/annotation-editor.js'),
- onMessage: function(annotationText) {
- if (annotationText)
- handleNewAnnotation(annotationText, this.annotationAnchor);
- annotationEditor.hide();
- },
- onShow: function() {
- this.postMessage('focus');
- }
- });
-
-/*
-The annotationList panel is the UI component that lists all the annotations
-the user has entered.
-
-On its 'show' event we pass it the array of annotations.
-
-The content script creates the HTML elements for the annotations, and
-intercepts clicks on the links, passing them back to the add-on to open them
-in the browser.
-*/
- var annotationList = panels.Panel({
- width: 420,
- height: 200,
- contentURL: data.url('list/annotation-list.html'),
- contentScriptFile: [data.url('jquery-1.4.2.min.js'),
- data.url('list/annotation-list.js')],
- contentScriptWhen: 'ready',
- onShow: function() {
- this.postMessage(simpleStorage.storage.annotations);
- },
- onMessage: function(message) {
- require('tabs').open(message);
- }
- });
-
-/*
-We listen for the OverQuota event from simple-storage.
-If it fires we just notify the user and delete the most
-recent annotations until we are back in quota.
-*/
- simpleStorage.on("OverQuota", function () {
- notifications.notify({
- title: 'Storage space exceeded',
- text: 'Removing recent annotations'});
- while (simpleStorage.quotaUsage > 1)
- simpleStorage.storage.annotations.pop();
- });
-
-/*
-We listen for private browsing start/stop events to change the widget icon
-and to notify the selectors of the change in state.
-*/
- privateBrowsing.on('start', function() {
- widget.contentURL = data.url('widget/pencil-off.png');
- activateSelectors();
- });
-
- privateBrowsing.on('stop', function() {
- if (canEnterAnnotations()) {
- widget.contentURL = data.url('widget/pencil-on.png');
- activateSelectors();
- }
- });
-
-/*
-The matcher page-mod locates anchors on web pages and prepares for the
-annotation to be displayed.
-
-It is attached to all pages, and when it is attached we pass it the complete
-list of annotations. It looks for anchors in its page. If it finds one it
-highlights the anchor and binds mouseenter/mouseout events to 'show' and 'hide'
-messages to the add-on.
-
-When the add-on receives the 'show' message it assigns the annotation text to
-the annotation panel and shows it.
-
-Note that the matcher is active whether or not the add-on is active:
-'inactive' only means that the user can't create new add-ons, they can still
-see old ones.
-*/
- var matcher = pageMod.PageMod({
- include: ['*'],
- contentScriptWhen: 'ready',
- contentScriptFile: [data.url('jquery-1.4.2.min.js'),
- data.url('matcher.js')],
- onAttach: function(worker) {
- if(simpleStorage.storage.annotations) {
- worker.postMessage(simpleStorage.storage.annotations);
- }
- worker.port.on('show', function(data) {
- annotation.content = data;
- annotation.show();
- });
- worker.port.on('hide', function() {
- annotation.content = null;
- annotation.hide();
- });
- worker.on('detach', function () {
- detachWorker(this, matchers);
- });
- matchers.push(worker);
- }
- });
-
-/*
-The annotation panel is the UI component that displays an annotation.
-
-When we are ready to show it we assign its 'content' attribute to contain
-the annotation text, and that gets sent to the content process in onShow().
-*/
- var annotation = panels.Panel({
- width: 200,
- height: 180,
- contentURL: data.url('annotation/annotation.html'),
- contentScriptFile: [data.url('jquery-1.4.2.min.js'),
- data.url('annotation/annotation.js')],
- contentScriptWhen: 'ready',
- onShow: function() {
- this.postMessage(this.content);
- }
- });
-
-}