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extension.js
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extension.js
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const St = imports.gi.St;
const Lang = imports.lang;
const Meta = imports.gi.Meta;
const Main = imports.ui.main;
const Mainloop = imports.mainloop;
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const Soup = imports.gi.Soup;
const Params = imports.misc.params;
const ModalDialog = imports.ui.modalDialog;
const Tweener = imports.ui.tweener;
const Shell = imports.gi.Shell;
const Me = imports.misc.extensionUtils.getCurrentExtension();
const Suggestions = Me.imports.suggestions_box;
const Helper = Me.imports.helper;
const Utils = Me.imports.utils;
const HistoryManager = Me.imports.history_manager;
const Prefs = Me.imports.prefs;
const _httpSession = Utils._httpSession;
const ICONS = Utils.ICONS;
const MAX_SUGGESTIONS = 3;
const SUGGESTIONS_URL =
"https://suggestqueries.google.com/complete/search?client=chrome&q=";
const SETTINGS_ICON = 'emblem-system-symbolic';
function launch_extension_prefs(uuid) {
let appSys = Shell.AppSystem.get_default();
let app = appSys.lookup_app('gnome-shell-extension-prefs.desktop');
let info = app.get_app_info();
let timestamp = global.display.get_current_time_roundtrip();
info.launch_uris(
['extension:///' + uuid],
global.create_app_launch_context(timestamp, -1)
);
}
const WebSearchDialog = new Lang.Class({
Name: 'WebSearchDialog',
Extends: ModalDialog.ModalDialog,
_init: function() {
this.parent({
destroyOnClose: false
});
this._dialogLayout =
typeof this.dialogLayout === "undefined"
? this._dialogLayout
: this.dialogLayout;
this._dialogLayout.set_style_class_name('');
this._dialogLayout.set_margin_bottom(300);
this.contentLayout.set_style_class_name('web-search-dialog');
this._settings = Utils.getSettings();
this._clipboard = St.Clipboard.get_default();
this._suggestions_delay_id = 0;
this._helper_delay_id = 0;
this.show_suggestions = true;
this.select_first_suggestion = true;
this.search_engine = false;
this._create_search_dialog();
this.activate_window = false;
this._window_handler_id = global.display.connect(
'window-demands-attention',
Lang.bind(this, this._on_window_demands_attention)
);
},
_resize: function() {
let monitor = Main.layoutManager.currentMonitor;
let is_primary = monitor.index === Main.layoutManager.primaryIndex;
let available_width = monitor.width;
let available_height = monitor.height;
if(is_primary) available_height -= Main.panel.actor.height;
let width = Math.round(available_width / 100 * 85);
this._dialogLayout.set_width(width);
},
_reposition: function() {
let monitor = Main.layoutManager.currentMonitor;
this._dialogLayout.x = Math.round(monitor.width / 2 - this._dialogLayout.width / 2);
this._dialogLayout.y = 100;
},
_get_main_hint: function() {
let default_engine = this._get_default_engine();
let hint =
'Type to search in '+default_engine.name+' or enter '+
'a keyword and press "space".';
if(this._get_open_url_keyword()) {
hint +=
'\nKeyword "'+this._get_open_url_keyword()+'" for open URL.';
}
hint += '\nPress "Tab" for available search engines.';
return hint;
},
_remove_delay_id: function() {
if(this._suggestions_delay_id > 0) {
Mainloop.source_remove(this._suggestions_delay_id);
this._suggestions_delay_id = 0;
}
if(this._helper_delay_id > 0) {
Mainloop.source_remove(this._helper_delay_id);
this._helper_delay_id = 0;
}
},
_on_window_demands_attention: function(display, window) {
if(this.activate_window) {
this.activate_window = false;
Main.activateWindow(window);
}
},
_create_search_dialog: function() {
this.hint = new St.Label({
style_class: 'search-hint'
});
this._hint_box = new St.BoxLayout({
visible: false
});
this._hint_box.add(this.hint);
this.search_engine_label = new St.Label({
style_class: 'search-engine-label',
text: 'Web Search:'
});
this.search_entry = new St.Entry({
style_class: 'web-search-entry'
});
this.search_entry.connect(
'key-press-event',
Lang.bind(this, this._on_key_press)
);
this.search_entry.get_clutter_text().connect(
'activate',
Lang.bind(this, this._on_text_activate)
);
this.search_entry.get_clutter_text().connect(
'text-changed',
Lang.bind(this, this._on_search_text_changed)
);
this.search_entry.get_clutter_text().connect(
'key-press-event',
Lang.bind(this, this._on_text_key_press)
);
let secondary_icon = new St.Icon({
icon_name: SETTINGS_ICON,
style_class: 'settings-icon'
});
this.search_entry.set_secondary_icon(secondary_icon);
this.search_entry.connect('secondary-icon-clicked',
Lang.bind(this, function() {
this.close();
launch_extension_prefs(Me.uuid);
}
));
this.duckduckgo_helper = new Helper.DuckDuckGoHelper();
this.suggestions_box = new Suggestions.SuggestionsBox(this);
this.suggestions_box.setSourceAlignment(0.02);
this.search_history = new HistoryManager.SearchHistoryManager();
this._search_table = new St.Widget({
name: 'web_search_table',
layout_manager: new Clutter.TableLayout()
});
let search_table_layout = this._search_table.layout_manager;
search_table_layout.pack(this.search_engine_label, 0, 0);
search_table_layout.pack(this.search_entry, 1, 0);
this._search_table.show();
this.contentLayout.add(this._search_table);
this.contentLayout.add(this._hint_box);
},
_on_key_press: function(o, e) {
let symbol = e.get_key_symbol();
let control_mask = (e.get_state() & Clutter.ModifierType.CONTROL_MASK);
let shift_mask = (e.get_state() & Clutter.ModifierType.SHIFT_MASK);
if(symbol == Clutter.Escape) {
this.close();
}
else if(symbol == Clutter.Tab) {
if(this.suggestions_box.isOpen) {
this.suggestions_box.firstMenuItem.setActive(true);
}
else {
let text = this.search_entry.get_text();
if(Utils.is_blank(text)) {
this._display_engines();
}
}
}
else if(symbol == Clutter.Down) {
if(this.suggestions_box.isOpen) {
if(this._settings.get_boolean(Prefs.SELECT_FIRST_SUGGESTION)) {
let items = this.suggestions_box._getMenuItems();
if(items.length > 1) {
items[0].actor.remove_style_pseudo_class('active');
items[1].setActive(true);
}
}
else {
this.suggestions_box.firstMenuItem.setActive(true);
}
}
else {
this.show_suggestions = false;
let text = this.search_entry.get_text();
let item = this.search_history.next_item(text);
this.search_entry.set_text(item.query);
// let hint_text = 'History.\nCurrent item '+
// this.search_history.current_index()+' of '+
// this.search_history.total_items();
// this._show_hint({
// text: hint_text,
// icon_name: ICONS.information
// });
}
}
else if(symbol == Clutter.Up) {
if(!this.suggestions_box.isOpen) {
this.show_suggestions = false;
let text = this.search_entry.get_text();
let item = this.search_history.prev_item(text);
this.search_entry.set_text(item.query);
// let hint_text = 'History.\nCurrent item '+
// this.search_history.current_index()+' of '+
// this.search_history.total_items();
// this._show_hint({
// text: hint_text,
// icon_name: ICONS.information
// });
}
}
// Ctrl+V
else if(control_mask && symbol == 118) {
this._clipboard.get_text(Lang.bind(this, function(clipboard, text) {
if (Utils.is_blank(text)) {
return false;
}
let clutter_text = this.search_entry.get_clutter_text();
clutter_text.delete_selection();
let pos = clutter_text.get_cursor_position();
clutter_text.insert_text(text, pos);
return true;
}));
}
// Ctrl+C
else if(control_mask && symbol == 99) {
let clutter_text = this.search_entry.get_clutter_text();
let selection = clutter_text.get_selection();
this._clipboard.set_text(selection);
}
// Ctrl+Shift+V - paste and search
else if(control_mask && shift_mask && symbol == 86) {
if(!this.search_engine) {
this._set_engine();
}
this._clipboard.get_text(Lang.bind(this, function(clipboard, text) {
if(Utils.is_blank(text)) {
this._show_hint({
text: 'Clipboard is empty.',
icon_name: ICONS.error
});
return false;
}
else {
this._activate_search(text);
return true;
}
}));
}
// Ctrl+Shift+G - paste and go
else if(control_mask && shift_mask && symbol == 71) {
if(!this.search_engine) {
this._set_engine();
}
this._clipboard.get_text(Lang.bind(this, function(clipboard, url) {
if(Utils.is_blank(url)) {
this._show_hint({
text: 'Clipboard is empty.',
icon_name: ICONS.error
});
return false;
}
else {
this._open_url(url, true);
return true;
}
}));
}
else if(control_mask && Utils.KEYBOARD_NUMBERS.indexOf(symbol) != -1) {
let item_id = Utils.KEYBOARD_NUMBERS.indexOf(symbol);
this.suggestions_box.activate_by_id(item_id);
}
else {
// nothing
}
return true;
},
_on_text_activate: function(text) {
text = text.get_text();
if(!Utils.is_blank(text)) {
if(this.search_engine.open_url) {
this._open_url(text, true);
}
else {
this._activate_search(text);
}
}
},
_on_text_key_press: function(o, e) {
let symbol = e.get_key_symbol();
// reset the search engine on backspace with empty search text
if(
symbol == Clutter.BackSpace &&
!this.search_entry.text.length &&
!this.search_engine._default
) {
this._set_engine(false);
this._on_search_text_changed(); // trigger update of hint
}
else if(symbol == Clutter.BackSpace) {
this.select_first_suggestion = false;
}
else if(symbol == Clutter.Right) {
let sel = this.search_entry.clutter_text.get_selection_bound();
if(sel === -1) {
this.search_entry.clutter_text.set_cursor_position(
this.search_entry.text.length
);
}
}
},
_on_search_text_changed: function() {
this._remove_delay_id();
let text = this.search_entry.get_text();
if(Utils.is_blank(text)) {
this.suggestions_box.close();
if(this.search_engine._default === true) {
let hint_text = this._get_main_hint();
this._show_hint({
text: hint_text,
icon_name: ICONS.information
});
}
}
else {
this._hide_hint();
}
if(this.search_engine == false || this.search_engine._default) {
let keyword = this._get_keyword(text);
this._set_engine(keyword);
}
if(this.show_suggestions) {
if(this.search_engine.open_url) {
if(!Utils.is_matches_protocol(text)) {
text = 'http://'+text;
this.search_entry.set_text(text);
}
if(/^https?:\/\/.+?/.test(text)) {
this._display_suggestions(text);
}
else {
this.suggestions_box.close();
}
}
else {
this._display_helper(text);
this._display_suggestions(text);
}
}
else {
this.show_suggestions = true;
}
return true;
},
_get_open_url_keyword: function() {
let key = this._settings.get_string(Prefs.OPEN_URL_KEY);
if(Utils.is_blank(key)) {
return false;
}
else {
return key.trim();
}
},
_get_keyword: function(text) {
let result = false;
let web_search_query_regexp = /^(.+?)\s$/;
if(web_search_query_regexp.test(text)) {
let matches = web_search_query_regexp.exec(text);
let keyword = matches[0].trim();
if(!Utils.is_blank(keyword)) {
result = keyword;
}
}
return result;
},
_get_default_engine: function() {
let engines = this._settings.get_strv(Prefs.ENGINES_KEY);
let index = this._settings.get_int(Prefs.DEFAULT_ENGINE_KEY);
let engine = JSON.parse(engines[index]);
if(!Utils.is_blank(engine.url)) {
return engine;
}
else {
return false;
}
},
_get_engine: function(key) {
if(Utils.is_blank(key)) {
return false;
}
let info;
key = key.trim();
if(key == this._get_open_url_keyword()) {
info = {
name: this._settings.get_string(Prefs.OPEN_URL_LABEL),
keyword: this._settings.get_string(Prefs.OPEN_URL_KEY),
open_url: true
};
return info;
}
else {
let engines_list = this._settings.get_strv(Prefs.ENGINES_KEY);
for(let i = 0; i < engines_list.length; i++) {
info = JSON.parse(engines_list[i]);
if(info.keyword == key && info.url.length > 0) {
info.open_url = false;
return info;
}
}
}
return false;
},
_set_engine: function(keyword) {
this._remove_delay_id();
let engine_info = this._get_engine(keyword);
let engine = {};
if(engine_info) {
engine = engine_info;
this.search_engine._default = false;
}
else {
engine = this._get_default_engine();
engine._default = true;
}
if(
engine.keyword === this.search_engine.keyword ||
this.search_engine._default && engine._default
) {
return false;
}
this.search_engine = {};
this.search_engine._default = engine._default;
this.search_engine.keyword = engine.keyword.trim();
this.search_engine.open_url = engine.open_url;
this.search_engine.name = engine.name.trim();
this.search_engine.url = !engine.open_url
? engine.url.trim()
: null
// update the label any time we set an engine
this._show_engine_label(this.search_engine.name+':');
if(!this.search_engine._default) {
let hint_text;
if(!engine.open_url) {
hint_text = 'Type to search in '+this.search_engine.name+'.';
}
else {
hint_text = 'Please, enter a URL.';
}
hint_text += '\nPress "Tab" to switch search engine.';
this.show_suggestions = false;
this.search_entry.set_text('');
this._show_hint({
text: hint_text,
icon_name: ICONS.information
});
}
return true;
},
_show_hint: function(params) {
params = Params.parse(params, {
text: null,
icon_name: ICONS.information
})
if(Utils.is_blank(params.text)) {
return false;
}
let icon = new St.Icon({
icon_name: params.icon_name,
style_class: 'hint-icon'
});
if(this._hint_box.get_children().length > 1) {
this._hint_box.replace_child(
this._hint_box.get_children()[0],
icon
)
}
else {
this._hint_box.insert_child_at_index(icon, 0);
}
this._hint_box.opacity = 30;
this._hint_box.show();
if(params.text != this.hint.get_text()) {
this.hint.set_text(params.text);
}
Tweener.addTween(this._hint_box, {
time: 0.1,
opacity: 255,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function() {
Tweener.addTween(this._hint_box, {
opacity: 120,
time: 0.1,
transition: 'easeOutQuad'
});
})
});
return true;
},
_hide_hint: function() {
if(this._hint_box.visible) {
Tweener.addTween(this._hint_box, {
opacity: 0,
height: 0,
time: 0.1,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function() {
this._hint_box.hide();
this._hint_box.set_height(-1);
})
})
return true;
}
return false;
},
_show_engine_label: function(text) {
if(Utils.is_blank(text)) {
return false;
}
let opacity = this.search_engine_label.opacity == 255;
let visible = this.search_engine_label.visible;
if(opacity && visible) {
this._hide_engine_label();
}
this.search_engine_label.opacity = 0;
this.search_engine_label.set_text(text);
this.search_engine_label.show()
let natural_width = this.contentLayout.get_preferred_width(-1)[1];
Tweener.addTween(this.contentLayout, {
width: natural_width+5,
time: 0.2,
transition: 'easeOutQuad',
onStart: Lang.bind(this, function() {
Tweener.addTween(this.search_engine_label, {
opacity: 255,
time: 0.1,
transition: 'easeOutQuad'
})
}),
onComplete: Lang.bind(this, function() {
this.contentLayout.set_width(-1);
})
});
return true;
},
_hide_engine_label: function() {
if(!this.search_engine_label.visible) {
return false;
}
Tweener.addTween(this.search_engine_label, {
opacity: 0,
time: 0.2,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function() {
this.contentLayout.set_width(-1);
this.search_engine_label.hide();
this.search_engine_label.set_text('');
})
})
return true;
},
_parse_suggestions: function(suggestions_source) {
if(suggestions_source[1].length < 1) {
return false;
}
let result = new Array();
for(let i = 0; i < suggestions_source[1].length; i++) {
let text = suggestions_source[1][i].trim();
let type = suggestions_source[4]['google:suggesttype'][i].trim();
let relevance = parseInt(
suggestions_source[4]['google:suggestrelevance'][i]
);
if(Utils.is_blank(text)) {continue;}
if(Utils.is_blank(type)) {continue;}
if(relevance < 1) {continue;}
let suggestion = {
text: text,
type: type,
relevance: relevance
}
result.push(suggestion);
}
return result.length > 0 ? result : false;
},
_get_suggestions: function(text, callback) {
let url = SUGGESTIONS_URL+encodeURIComponent(text);
let here = this;
let request = Soup.Message.new('GET', url);
_httpSession.queue_message(request, function(_httpSession, message) {
if(message.status_code === 200) {
let result = JSON.parse(request.response_body.data);
if(result[1].length < 1) {
callback.call(here, text, false);
}
else {
callback.call(here, text, result);
}
}
else {
callback.call(here, text, false);
}
});
},
_display_helper: function(text) {
if(!this._settings.get_boolean(Prefs.HELPER_KEY)) {
return false;
}
this.suggestions_box.remove_all_by_types(['HELPER']);
this._helper_delay_id = Mainloop.timeout_add(
this._settings.get_int(Prefs.HELPER_DELAY_KEY),
Lang.bind(this, function() {
this.suggestions_box.addMenuItem(
new Helper.HelperSpinnerMenuItem()
);
this.duckduckgo_helper.get_info(text,
Lang.bind(this, function(result) {
this.suggestions_box.remove_all_by_types(['HELPER']);
let image = {
url: result.image
};
let menu_item =
this.duckduckgo_helper.get_menu_item({
heading: result.heading,
definition: result.definition,
abstract: result.abstract,
icon: image
});
if(menu_item) {
let position = 0;
let set_position = this._settings.get_string(
Prefs.HELPER_POSITION_KEY
);
if(set_position === 'bottom') {
position = this.suggestions_box.numMenuItems;
if(position > 0) {
position += 1;
}
}
this.suggestions_box.addMenuItem(menu_item, position);
this.suggestions_box.open();
}
})
);
})
);
return true;
},
_display_suggestions: function(text) {
if(!this._settings.get_boolean(Prefs.SUGGESTIONS_KEY)) {
return false;
}
if(!this.show_suggestions) {
return false;
}
if(Utils.is_blank(text)) {
this.suggestions_box.close();
return false;
}
this.suggestions_box.open();
// text = text.trim();
this._suggestions_delay_id = Mainloop.timeout_add(
this._settings.get_int(Prefs.SUGGESTIONS_DELAY_KEY),
Lang.bind(this, function() {
this._get_suggestions(text, function(term, suggestions) {
this.suggestions_box.remove_all_by_types('ALL');
if(!suggestions) {
this.suggestions_box.close();
return false;
}
if(this.search_entry.text != term) return false;
if(this.search_entry.text != term) return false;
suggestions = this._parse_suggestions(suggestions);
if(!suggestions){return false;}
for(let i = 0; i < MAX_SUGGESTIONS; i++) {
let suggestion = suggestions[i];
if(this.search_engine.open_url &&
suggestion.type != 'NAVIGATION') {
continue;
}
if(suggestion.text == text) {
continue;
}
this.suggestions_box.add_suggestion({
text: suggestion.text,
type: suggestion.type,
relevance: suggestion.relevance,
term: text
});
}
this._display_history_suggestions(text);
if(this.suggestions_box.isEmpty()) {
this.suggestions_box.close();
}
else {
if(this.select_first_suggestion) {
this._select_first_suggestion(text);
}
else {
this.select_first_suggestion = true;
}
}
return true;
});
})
);
return true;
},
_select_first_suggestion: function(text) {
if(!this._settings.get_boolean(Prefs.SELECT_FIRST_SUGGESTION)) return false;
if(text.slice(-1) == ' ') return false;
let item = this.suggestions_box.firstMenuItem;
let suggestion_t = item._text.slice(0, text.length).toUpperCase();
let source_t = text.toUpperCase();
if(suggestion_t != source_t) {
return false;
}
this.show_suggestions = false;
this.search_entry.set_text(item._text);
this.search_entry.clutter_text.set_selection(
text.length,
item._text.length
);
item.actor.add_style_pseudo_class('active');
this._display_helper(text);
return true;
},
_display_history_suggestions: function(text) {
if(!this._settings.get_boolean(Prefs.HISTORY_SUGGESTIONS_KEY)) {
return false;
}
let types = ['QUERY', 'NAVIGATION'];
if(this.search_engine.open_url) {
types = ['NAVIGATION'];
}
let history_suggestions = this.search_history.get_best_matches({
text: text,
types: types,
min_score: 0.35,
limit: 3,
fuzziness: 0.5
});
if(history_suggestions.length > 0) {
this.suggestions_box.add_label('History:');
for(let i = 0; i < history_suggestions.length; i++) {
this.suggestions_box.add_suggestion({
text: history_suggestions[i][1].query,
type: history_suggestions[i][1].type,
relevance: history_suggestions[i][0],
term: text
});
}
}
return true;
},
_display_engines: function() {
this._remove_delay_id();
this.suggestions_box.removeAll();
let engines = this._settings.get_strv(Prefs.ENGINES_KEY);
for(let i = 0; i < engines.length; i++) {
let engine = JSON.parse(engines[i]);
let default_engine = this._get_default_engine();
if(this.search_engine.keyword == engine.keyword) {
continue;
}
else if(default_engine.name == engine.name) {
continue;
}
else {
this.suggestions_box.add_suggestion({
text: engine.name,
type: 'ENGINE',
term: engine.keyword
});
}
}
if(this._get_open_url_keyword()) {
this.suggestions_box.add_suggestion({
text: this._settings.get_string(Prefs.OPEN_URL_LABEL),
type: 'ENGINE',
term: this._get_open_url_keyword()
});
}
if(!this.suggestions_box.isEmpty()) {
this.suggestions_box.open();
}
},
_activate_search: function(text) {
this.suggestions_box.close();
if(Utils.is_blank(text)) {
this._show_hint({
text: 'Error.\nPlease, enter a query.',
icon_name: ICONS.error
});
return false;
}
this.search_history.add_item({
query: text,
type: "QUERY"
});
text = encodeURIComponent(text);
let url = this.search_engine.url.replace('{term}', text);
this._open_url(url);
return true;
},
_open_url: function(url, to_history) {
url = Utils.get_url(url);
if(!url) {
this._show_hint({
text: 'Please, enter a valid url.',
icon_name: ICONS.error
});
return false;
}
else {
this.close();
}
if(to_history === true) {
this.search_history.add_item({
query: url,
type: "NAVIGATION"
});
}
this.activate_window = true;