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common.js
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common.js
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'use strict';
//////////////////////////////////////////////////////////////////////
// Global variables (constants).
const g_datalist_names = [
'protocols',
'ports',
'hostnames',
'pathnames',
];
const g_other_options_names = [
'autoclose_popup',
'hide_tooltips',
'new_tab_next_to_current',
'disable_autocomplete',
'ui_theme',
'icon_theme',
'window_width',
'input_font',
'textarea_font',
];
const g_default_options = {
// -- Sync storage --
// Datalists:
'protocols': [
'http',
'https',
],
'ports': [
'80',
'443',
'8000',
'8008',
'8080',
'8888',
],
'hostnames': [
'127.0.0.1',
],
'pathnames': [],
// Other options:
'autoclose_popup': true,
'hide_tooltips': false,
'new_tab_next_to_current': false,
'disable_autocomplete': false,
'ui_theme': 'auto',
'icon_theme': 'logo',
'window_width': 500,
'input_font': '1em/1.66 sans-serif',
'textarea_font': '1em/1.66 monospace',
// Quick options:
'search_sort': true,
'search_encode': true,
'search_plus': true,
'search_trim': true,
'search_sep': '&',
'hash_sort': true,
'hash_encode': true,
'hash_plus': true,
'hash_trim': true,
'hash_sep': '&',
// -- Local storage --
// (nothing)
};
//////////////////////////////////////////////////////////////////////
// Options/settings.
//
// They both work the same way:
// First argument is either 'local' or 'sync'.
// Second argument is either a list of strings or an object of {key: value}.
// They return a Promise.
function load_options(which_storage, keys) {
return new Promise(function(resolve, reject) {
if (which_storage != 'local' && which_storage != 'sync') {
throw new Error('Unrecognized storage.');
}
chrome.storage[which_storage].get(keys, function(items) {
if (chrome.runtime.lastError) {
reject(new Error(chrome.runtime.lastError.message));
} else {
for (let name of keys) {
if (!(name in items)) {
items[name] = g_default_options[name];
}
if (name === 'icon_theme') {
// Fallback for removed themes.
if (items[name] === 'light') {
items[name] = 'logo';
} else if (items[name] === 'dark') {
items[name] = 'white';
}
}
}
resolve(items);
}
});
});
}
function save_options(which_storage, items) {
return new Promise(function(resolve, reject) {
if (which_storage != 'local' && which_storage != 'sync') {
throw new Error('Unrecognized storage.');
}
chrome.storage[which_storage].set(items, function() {
if (chrome.runtime.lastError) {
reject(new Error(chrome.runtime.lastError.message));
} else {
resolve();
}
});
});
}
//////////////////////////////////////////////////////////////////////
// Misc. convenience functions.
// Detects the current platform an adds the relevant classes.
// For convenience, also returns a promise.
function detect_platform() {
return chrome.runtime.getPlatformInfo().then(function(info) {
var platform = info.os === 'android' ? 'mobile' : 'desktop';
document.documentElement.classList.add(platform);
return platform;
});
}
// Applies the UI theme.
function apply_ui_theme(theme) {
document.documentElement.classList.remove('light', 'dark');
if (theme === 'auto') {
return;
}
if (theme) {
document.documentElement.classList.add(theme);
}
}
// Applies the icon theme.
function apply_icon_theme(theme) {
// This list of icons is the same as the one in `manifest.json`.
// Please remember to copy-paste them when changed.
var icons = {
"16" : "icons/icon-logo-16.png",
"24" : "icons/icon-logo-24.png",
"32" : "icons/icon-logo-32.png",
"48" : "icons/icon-logo-48.png",
"64" : "icons/icon-logo-64.png",
"128": "icons/icon-logo-128.png",
"256": "icons/icon-logo-256.png"
};
for (const size of Object.keys(icons)) {
icons[size] = icons[size].replace('logo', theme);
}
chrome.action.setIcon({ path: icons });
}
// Throttles down a function, so that it is only called after the burst of
// calls (events) have ended.
function debounce(interval, callback) {
var timer = null;
return function() {
var context = this;
var args = arguments;
clearTimeout(timer);
timer = setTimeout(function() {
timer = null;
callback.apply(context, args);
}, interval);
};
}
// Automatically changes the height of the <textarea> based on the content.
// For convenience, the argument can be either an HTMLElement or an Event.
// Note: "overflow: hidden" is required.
function auto_size_textarea(event_or_textarea) {
var elem = (event_or_textarea.target
? event_or_textarea.target
: event_or_textarea
);
elem.style.height = 'auto';
var height = elem.scrollHeight;
elem.style.height = height + 'px';
// Adjusting a few remaining pixels.
// Why? Because I had to do it in order to prevent vertical scrolling.
height += elem.scrollHeight - elem.clientHeight;
elem.style.height = height + 'px';
}
// Gets or sets the value of a form input element.
// Automatically handles different types.
// var whatever = input_value('element_id');
// input_value('element_id', 'new_value);
function input_value(id_or_elem, value) {
// The first argument can be either an id (string), or an HTMLElement.
var elem = id_or_elem;
if (typeof elem == 'string') {
elem = document.getElementById(id_or_elem);
if (!elem) {
// Not an id? Maybe it's a name attribute.
let radio = document.querySelector('input[type="radio"][name="' + id_or_elem + '"]');
elem = radio?.closest('form')?.[id_or_elem]; // RadioNodeList object.
}
}
if (!elem) {
throw new Error('Element not found');
}
// Is this a "get" or "set" call?
// "Get" only receives one argument, "set" receives two.
var get = (arguments.length == 1);
if (elem.tagName === undefined) {
// Then this is a RadioNodeList object.
if (get) return elem.value;
elem.value = value;
return;
}
var tagname = elem.tagName.toLowerCase();
var type = elem.type.toLowerCase();
if (tagname == 'input' || tagname == 'textarea') {
if (tagname == 'textarea' || /^(text|password|hidden|url|email|tel|search)$/.test(type)) {
if (get) return elem.value;
elem.value = value;
return;
} else if (/^(number|range)$/.test(type)) {
if (get) return elem.valueAsNumber;
elem.valueAsNumber = value;
return;
} else if (/^(checkbox)$/.test(type)) {
if (get) return elem.checked;
elem.checked = value;
return;
}
}
throw new Error('Element not supported (not implemented yet)');
}
// Gets the current Chrome tab, returning a promise.
function current_tab() {
return new Promise(function(resolve, reject) {
chrome.tabs.query({
'active': true,
'currentWindow': true,
}, function(tabs) {
if (tabs && tabs[0]) {
resolve(tabs[0]);
} else {
reject(new Error('No tab found.'));
}
});
});
}
// options.js and popup.js will put here their specific error reporting
// functions.
var DEFAULT_ERROR_REPORTER = null;
function auto_close_popup_window() {
return load_options('sync', ['autoclose_popup']).then(function(items) {
if (items['autoclose_popup']) {
window.close();
}
});
}
function open_url_in_this_tab(url) {
return current_tab().then(function(tab) {
chrome.tabs.update(tab.id, {'url': url});
}, DEFAULT_ERROR_REPORTER).then(auto_close_popup_window);
}
function _open_url_in_new_tab(url, active) {
return load_options('sync', ['new_tab_next_to_current']).then(function(items) {
if (items['new_tab_next_to_current']) {
return current_tab().then(function(tab) {
chrome.tabs.create({'url': url, 'index': tab.index + 1, 'active': active});
}, DEFAULT_ERROR_REPORTER);
} else {
return chrome.tabs.create({'url': url, 'active': active});
}
}, DEFAULT_ERROR_REPORTER);
}
function open_url_in_new_tab(url) {
return _open_url_in_new_tab(url, true).then(auto_close_popup_window);
}
function open_url_in_new_background_tab(url) {
return _open_url_in_new_tab(url, false).then(auto_close_popup_window);
}
function open_url_in_new_window(url) {
return chrome.windows.create({'url': url}).then(auto_close_popup_window);
}
function open_url_in_new_incognito(url) {
return chrome.windows.create({'url': url, 'incognito': true}).then(auto_close_popup_window);
}