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https://github.com/mdn/webextensions-examples.git
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5dcff0bef0
updateActiveTab has ambiguous meaning, most prominent of which doesn't mean what we are actually trying to do.
87 lines
2.4 KiB
JavaScript
87 lines
2.4 KiB
JavaScript
let currentTab;
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let currentBookmark;
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/*
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* Updates the browserAction icon to reflect whether the current page
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* is already bookmarked.
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*/
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function updateIcon() {
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browser.browserAction.setIcon({
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path: currentBookmark ? {
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19: "icons/star-filled-19.png",
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38: "icons/star-filled-38.png"
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} : {
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19: "icons/star-empty-19.png",
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38: "icons/star-empty-38.png"
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},
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tabId: currentTab.id
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});
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browser.browserAction.setTitle({
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// Screen readers can see the title
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title: currentBookmark ? 'Unbookmark it!' : 'Bookmark it!',
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tabId: currentTab.id
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});
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}
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/*
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* Add or remove the bookmark on the current page.
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*/
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function toggleBookmark() {
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if (currentBookmark) {
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browser.bookmarks.remove(currentBookmark.id);
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} else {
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browser.bookmarks.create({title: currentTab.title, url: currentTab.url});
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}
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}
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browser.browserAction.onClicked.addListener(toggleBookmark);
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/*
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* Switches currentTab and currentBookmark to reflect the currently active tab
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*/
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function updateAddonStateForActiveTab(tabs) {
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function isSupportedProtocol(urlString) {
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let supportedProtocols = ["https:", "http:", "ftp:", "file:"];
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let url = document.createElement('a');
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url.href = urlString;
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return supportedProtocols.indexOf(url.protocol) != -1;
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}
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function updateTab(tabs) {
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if (tabs[0]) {
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currentTab = tabs[0];
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if (isSupportedProtocol(currentTab.url)) {
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let searching = browser.bookmarks.search({url: currentTab.url});
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searching.then((bookmarks) => {
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currentBookmark = bookmarks[0];
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updateIcon();
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});
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} else {
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console.log(`Bookmark it! does not support the '${currentTab.url}' URL.`)
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}
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}
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}
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let gettingActiveTab = browser.tabs.query({active: true, currentWindow: true});
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gettingActiveTab.then(updateTab);
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}
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// listen for bookmarks being created
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browser.bookmarks.onCreated.addListener(updateAddonStateForActiveTab);
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// listen for bookmarks being removed
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browser.bookmarks.onRemoved.addListener(updateAddonStateForActiveTab);
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// listen to tab URL changes
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browser.tabs.onUpdated.addListener(updateAddonStateForActiveTab);
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// listen to tab switching
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browser.tabs.onActivated.addListener(updateAddonStateForActiveTab);
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// listen for window switching
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browser.windows.onFocusChanged.addListener(updateAddonStateForActiveTab);
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// update when the extension loads initially
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updateAddonStateForActiveTab();
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