C++ source, ASCII text
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#include "gpanthera.hh"
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#include <gtkmm.h>
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#include <glibmm.h>
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#include <glibmm/ustring.h>
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#include <iostream>
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#include <memory>
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#include <libintl.h>
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#include <locale.h>
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#include <gtk/gtk.h>
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#include <gdk/gdk.h>
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#include <webkit/webkit.h>
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#include <fstream>
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#include <nlohmann/json.hpp>
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#include <iomanip>
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#include <sstream>
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#include <dlfcn.h>
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#include "plugin_api.h"
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using plugin_entrypoint_type = void(*)(void);
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std::string url_encode(const std::string &value) {
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// Thanks https://stackoverflow.com/a/17708801
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std::ostringstream escaped;
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escaped.fill('0');
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escaped << std::hex;
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for(char c : value) {
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// Keep alphanumeric and other accepted characters intact
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if (isalnum(c) || c == '-' || c == '_' || c == '.' || c == '~') {
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escaped << c;
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continue;
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}
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// Any other characters are percent-encoded
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escaped << std::uppercase;
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escaped << '%' << std::setw(2) << int((unsigned char) c);
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escaped << std::nouppercase;
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}
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return escaped.str();
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}
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struct SearchEngine {
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Glib::ustring name;
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Glib::ustring url;
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Glib::ustring get_search_url(const std::string &query) {
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auto pos = url.find("%s");
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if(pos == Glib::ustring::npos) {
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throw std::runtime_error("Invalid search engine URL: missing '%s' placeholder");
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}
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auto new_url = url;
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new_url.replace(pos, 2, url_encode(query));
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return new_url;
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}
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};
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class PantheraWww : public Gtk::Application {
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Gtk::Window *window = Gtk::make_managed<Gtk::Window>();
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protected:
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std::shared_ptr<gPanthera::LayoutManager> layout_manager;
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std::shared_ptr<gPanthera::ContentManager> content_manager;
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Gtk::Entry *url_bar = nullptr;
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std::string cookie_file = "cookies.txt";
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std::vector<SearchEngine> search_engines;
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SearchEngine *default_search_engine = nullptr;
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static void notify_callback(GObject *object, GParamSpec *pspec, gpointer data) {
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if(!gtk_widget_get_parent(GTK_WIDGET(object))) {
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return;
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}
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auto parent = gtk_widget_get_parent(gtk_widget_get_parent(GTK_WIDGET(object)));
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if(auto page = dynamic_cast<gPanthera::ContentPage*>(Glib::wrap(parent))) {
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if(g_strcmp0(pspec->name, "title") == 0) {
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if(auto label = dynamic_cast<Gtk::Label*>(page->tab_widget->get_last_child())) {
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if(strlen(webkit_web_view_get_title(WEBKIT_WEB_VIEW(object))) == 0) {
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label->set_label("Untitled");
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} else {
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label->set_label(webkit_web_view_get_title(WEBKIT_WEB_VIEW(object)));
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}
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}
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} else if(g_strcmp0(pspec->name, "favicon") == 0) {
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// Update favicons
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if(auto image = dynamic_cast<Gtk::Image*>(page->tab_widget->get_first_child())) {
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image->set_from_icon_name("image-loading-symbolic");
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if(auto favicon = webkit_web_view_get_favicon(WEBKIT_WEB_VIEW(object))) {
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if(G_IS_OBJECT(favicon)) {
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if(Glib::RefPtr<Gdk::Texture> texture = Glib::wrap(favicon)) {
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image->set(texture);
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}
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}
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}
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}
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}
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}
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}
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static void notify_focused_callback(GObject *object, GParamSpec *pspec, gpointer data) {
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if(!gtk_widget_get_parent(GTK_WIDGET(object))) {
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return;
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}
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auto this_ = static_cast<PantheraWww*>(data);
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auto parent = gtk_widget_get_parent(gtk_widget_get_parent(GTK_WIDGET(object)));
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if(auto page = dynamic_cast<gPanthera::ContentPage*>(Glib::wrap(parent))) {
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if(g_strcmp0(pspec->name, "uri") == 0) {
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this_->url_bar->set_text(webkit_web_view_get_uri(WEBKIT_WEB_VIEW(object)));
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}
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}
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}
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static void on_back_pressed(GtkGestureClick *gesture, int n_press, double x, double y, gpointer user_data) {
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WebKitWebView *webview = WEBKIT_WEB_VIEW(user_data);
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webkit_web_view_go_back(webview);
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}
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static void on_forward_pressed(GtkGestureClick *gesture, int n_press, double x, double y, gpointer user_data) {
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WebKitWebView *webview = WEBKIT_WEB_VIEW(user_data);
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webkit_web_view_go_forward(webview);
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}
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static gboolean on_decide_policy(WebKitWebView *source, WebKitPolicyDecision *decision, WebKitPolicyDecisionType type, gpointer user_data) {
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// Middle-click opens in a new window
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if(auto self = static_cast<PantheraWww*>(user_data)) {
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if(type == WEBKIT_POLICY_DECISION_TYPE_NAVIGATION_ACTION) {
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auto action = webkit_navigation_policy_decision_get_navigation_action(WEBKIT_NAVIGATION_POLICY_DECISION(decision));
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if(webkit_navigation_action_get_mouse_button(action) == 2) {
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Glib::ustring url = Glib::ustring(webkit_uri_request_get_uri(webkit_navigation_action_get_request(action)));
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self->on_new_tab(nullptr, url, false);
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webkit_policy_decision_ignore(decision);
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return true;
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}
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} else if(type == WEBKIT_POLICY_DECISION_TYPE_NEW_WINDOW_ACTION) {
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auto action = webkit_navigation_policy_decision_get_navigation_action(WEBKIT_NAVIGATION_POLICY_DECISION(decision));
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self->on_new_tab(nullptr, webkit_uri_request_get_uri(webkit_navigation_action_get_request(action)), false, true);
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return true;
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}
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}
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return false;
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}
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void on_new_tab(gPanthera::ContentStack *stack, const Glib::ustring &url = "about:blank", bool focus = true, bool new_window = false) {
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if(!stack) {
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// Find the current area
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stack = content_manager->get_last_operated_page()->get_stack();
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}
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WebKitWebView *webview = WEBKIT_WEB_VIEW(webkit_web_view_new());
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gtk_widget_set_hexpand(GTK_WIDGET(webview), true);
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gtk_widget_set_vexpand(GTK_WIDGET(webview), true);
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auto page_content = Gtk::make_managed<Gtk::Box>();
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gtk_box_append(page_content->gobj(), GTK_WIDGET(webview));
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auto page_tab = new Gtk::Box();
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page_tab->set_orientation(Gtk::Orientation::HORIZONTAL);
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auto initial_icon = Gtk::make_managed<Gtk::Image>(Gio::Icon::create("image-loading-symbolic"));
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page_tab->append(*initial_icon);
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page_tab->append(*Gtk::make_managed<Gtk::Label>("Untitled"));
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page_tab->set_spacing(4);
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auto page = Gtk::make_managed<gPanthera::ContentPage>(content_manager, stack, page_content, page_tab);
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g_signal_connect(webview, "notify", G_CALLBACK(notify_callback), page->gobj());
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g_signal_connect(webview, "decide-policy", G_CALLBACK(on_decide_policy), this);
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webkit_web_view_load_uri(webview, url.data());
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auto cookie_manager = webkit_network_session_get_cookie_manager(webkit_web_view_get_network_session(webview));
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webkit_cookie_manager_set_persistent_storage(cookie_manager, cookie_file.c_str(), WEBKIT_COOKIE_PERSISTENT_STORAGE_TEXT);
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webkit_cookie_manager_set_accept_policy(cookie_manager, WEBKIT_COOKIE_POLICY_ACCEPT_ALWAYS);
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auto website_data_manager = webkit_network_session_get_website_data_manager(webkit_web_view_get_network_session(webview));
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webkit_website_data_manager_set_favicons_enabled(website_data_manager, true);
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GtkEventController *click_controller_back = GTK_EVENT_CONTROLLER(gtk_gesture_click_new());
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gtk_gesture_single_set_button(GTK_GESTURE_SINGLE(click_controller_back), 8);
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g_signal_connect(click_controller_back, "pressed", G_CALLBACK(on_back_pressed), webview);
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gtk_widget_add_controller(GTK_WIDGET(webview), click_controller_back);
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GtkEventController *click_controller_forward = GTK_EVENT_CONTROLLER(gtk_gesture_click_new());
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gtk_gesture_single_set_button(GTK_GESTURE_SINGLE(click_controller_forward), 9);
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g_signal_connect(click_controller_forward, "pressed", G_CALLBACK(on_forward_pressed), webview);
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gtk_widget_add_controller(GTK_WIDGET(webview), click_controller_forward);
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stack->add_page(*page);
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if(focus) {
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stack->set_visible_child(*page);
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content_manager->set_last_operated_page(page);
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}
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if(new_window) {
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bool result = stack->signal_detach.emit(page);
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}
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}
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void on_startup() override {
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Gtk::Application::on_startup();
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add_window(*window);
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window->set_default_size(600, 400);
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layout_manager = std::make_shared<gPanthera::LayoutManager>();
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auto dock_stack_1 = Gtk::make_managed<gPanthera::DockStack>(layout_manager, "One", "one");
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auto switcher_1 = Gtk::make_managed<gPanthera::DockStackSwitcher>(dock_stack_1, Gtk::Orientation::HORIZONTAL);
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auto dock_stack_2 = Gtk::make_managed<gPanthera::DockStack>(layout_manager, "Two", "two");
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auto switcher_2 = Gtk::make_managed<gPanthera::DockStackSwitcher>(dock_stack_2, Gtk::Orientation::VERTICAL);
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auto pane_1_content = Gtk::make_managed<Gtk::Box>(Gtk::Orientation::VERTICAL, 0);
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auto debug_button = Gtk::make_managed<Gtk::Button>("Debug");
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pane_1_content->append(*debug_button);
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auto pane_2_content = Gtk::make_managed<Gtk::Box>(Gtk::Orientation::VERTICAL, 0);
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auto test_notebook = Gtk::make_managed<Gtk::Notebook>();
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test_notebook->append_page(*Gtk::make_managed<Gtk::Label>("Test 1"), *Gtk::make_managed<Gtk::Label>("Test 1"));
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pane_2_content->append(*test_notebook);
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auto pane_3_content = Gtk::make_managed<Gtk::Box>(Gtk::Orientation::VERTICAL, 0);
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pane_3_content->append(*Gtk::make_managed<Gtk::Label>("Pane 3 content"));
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auto pane_1_icon = Gtk::make_managed<Gtk::Image>();
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pane_1_icon->set_from_icon_name("go-home-symbolic");
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auto pane_2_icon = Gtk::make_managed<Gtk::Image>();
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pane_2_icon->set_from_icon_name("folder-symbolic");
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auto pane_3_icon = Gtk::make_managed<Gtk::Image>();
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pane_3_icon->set_from_icon_name("network-transmit-receive-symbolic");
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auto pane_1 = Gtk::make_managed<gPanthera::DockablePane>(layout_manager, *pane_1_content, "pane1", "Pane 1", pane_1_icon);
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auto pane_2 = Gtk::make_managed<gPanthera::DockablePane>(layout_manager, *pane_2_content, "pane2", "Pane 2", pane_2_icon);
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auto pane_3 = Gtk::make_managed<gPanthera::DockablePane>(layout_manager, *pane_3_content, "pane3", "Pane 3", pane_3_icon);
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dock_stack_1->set_transition_type(Gtk::StackTransitionType::SLIDE_LEFT_RIGHT);
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dock_stack_1->set_transition_duration(125);
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dock_stack_1->set_expand(true);
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dock_stack_2->set_transition_type(Gtk::StackTransitionType::SLIDE_UP_DOWN);
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dock_stack_2->set_transition_duration(125);
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dock_stack_2->set_expand(true);
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auto outer_grid = Gtk::make_managed<Gtk::Grid>();
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outer_grid->attach(*switcher_2, 0, 1, 1, 1);
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outer_grid->attach(*switcher_1, 1, 2, 1, 1);
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auto outer_paned = Gtk::make_managed<Gtk::Paned>(Gtk::Orientation::HORIZONTAL);
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outer_paned->set_start_child(*dock_stack_2);
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auto inner_paned = Gtk::make_managed<Gtk::Paned>(Gtk::Orientation::VERTICAL);
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auto content = Gtk::make_managed<Gtk::Box>(Gtk::Orientation::VERTICAL, 0);
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content_manager = std::make_shared<gPanthera::ContentManager>();
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std::function<bool(gPanthera::ContentPage*)> detach_handler;
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detach_handler = [](gPanthera::ContentPage *widget) {
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auto new_stack = Gtk::make_managed<gPanthera::ContentStack>(widget->content_manager, widget->get_stack()->get_detach_handler());
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auto new_switcher = Gtk::make_managed<gPanthera::ContentTabBar>(new_stack, Gtk::Orientation::HORIZONTAL, dynamic_cast<gPanthera::ContentTabBar*>(widget->get_stack()->get_parent()->get_first_child())->get_extra_child_function());
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auto new_notebook = Gtk::make_managed<gPanthera::ContentNotebook>(new_stack, new_switcher);
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auto window = new gPanthera::ContentWindow(new_notebook);
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widget->redock(new_stack);
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window->present();
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new_stack->signal_leave_empty.connect([window]() {
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window->close();
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delete window;
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});
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return true;
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};
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auto return_extra_child = [this](gPanthera::ContentTabBar *switcher) {
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auto new_tab_button = Gtk::make_managed<Gtk::Button>();
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new_tab_button->set_child(*Gtk::make_managed<Gtk::Image>(Gio::Icon::create("list-add-symbolic")));
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new_tab_button->set_tooltip_text("New tab");
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new_tab_button->signal_clicked().connect([this, switcher]() {
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on_new_tab(switcher->get_stack());
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});
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return new_tab_button;
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};
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auto content_stack = Gtk::make_managed<gPanthera::ContentStack>(content_manager, detach_handler);
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auto content_stack_switcher = Gtk::make_managed<gPanthera::ContentTabBar>(content_stack, Gtk::Orientation::HORIZONTAL, return_extra_child);
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content_manager->add_stack(content_stack);
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WebKitWebView *webview = WEBKIT_WEB_VIEW(webkit_web_view_new()); // for some reason, this has to be created
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content->set_name("content_box");
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auto content_notebook = Gtk::make_managed<gPanthera::ContentNotebook>(content_stack, content_stack_switcher, Gtk::PositionType::TOP);
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content->append(*content_notebook);
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inner_paned->set_start_child(*content);
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inner_paned->set_end_child(*dock_stack_1);
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outer_paned->set_end_child(*inner_paned);
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outer_grid->attach(*outer_paned, 1, 1, 1, 1);
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// Get search engines
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std::ifstream search_engines_file_in("search_engines.json");
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if(search_engines_file_in) {
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std::string search_engines_json((std::istreambuf_iterator<char>(search_engines_file_in)), std::istreambuf_iterator<char>());
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search_engines_file_in.close();
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set_search_engines_from_json(search_engines_json);
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} else {
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search_engines_file_in.close();
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auto empty_json = nlohmann::json::array();
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std::ofstream search_engines_file_out("search_engines.json");
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search_engines_file_out << empty_json.dump(4);
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}
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// Create the toolbar
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auto main_toolbar = Gtk::make_managed<Gtk::Box>(Gtk::Orientation::HORIZONTAL, 8);
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// URL bar
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url_bar = Gtk::make_managed<Gtk::Entry>();
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url_bar->set_placeholder_text("Enter URL");
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url_bar->set_hexpand(true);
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auto load_url_callback = [this]() {
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auto page = content_manager->get_last_operated_page();
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if(page) {
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if(auto webview = WEBKIT_WEB_VIEW(page->get_child()->get_first_child()->gobj())) {
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webkit_web_view_load_uri(webview, url_bar->get_text().c_str());
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}
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}
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};
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// Go
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auto go_button = Gtk::make_managed<Gtk::Button>("Go");
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go_button->signal_clicked().connect(load_url_callback);
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url_bar->signal_activate().connect(load_url_callback);
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content_manager->signal_page_operated.connect([this](gPanthera::ContentPage *page) {
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if(!page->get_child()) {
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return;
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}
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if(!page->get_child()->get_first_child()) {
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return;
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}
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url_bar->set_text(webkit_web_view_get_uri(WEBKIT_WEB_VIEW(page->get_child()->get_first_child()->gobj())));
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guint url_update_handler = g_signal_connect(page->get_child()->get_first_child()->gobj(), "notify", G_CALLBACK(notify_focused_callback), this);
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std::shared_ptr<sigc::connection> control_signal_handler = std::make_shared<sigc::connection>();
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*control_signal_handler = page->signal_control_status_changed.connect([this, page, control_signal_handler, url_update_handler](bool controlled) {
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if(!controlled) {
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control_signal_handler->disconnect();
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if(page->get_child() && page->get_child()->get_first_child() && WEBKIT_IS_WEB_VIEW(page->get_child()->get_first_child()->gobj())) {
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g_signal_handler_disconnect(page->get_child()->get_first_child()->gobj(), url_update_handler);
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}
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}
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});
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});
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// Back, forward, reload
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auto back_button = Gtk::make_managed<Gtk::Button>();
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back_button->set_child(*Gtk::make_managed<Gtk::Image>(Gio::Icon::create("go-previous-symbolic")));
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back_button->set_tooltip_text("Back");
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auto forward_button = Gtk::make_managed<Gtk::Button>();
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forward_button->set_child(*Gtk::make_managed<Gtk::Image>(Gio::Icon::create("go-next-symbolic")));
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forward_button->set_tooltip_text("Forward");
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auto reload_button = Gtk::make_managed<Gtk::Button>();
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reload_button->set_child(*Gtk::make_managed<Gtk::Image>(Gio::Icon::create("view-refresh-symbolic")));
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reload_button->set_tooltip_text("Reload");
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back_button->signal_clicked().connect([this]() {
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auto page = content_manager->get_last_operated_page();
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if(page) {
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if(auto webview = WEBKIT_WEB_VIEW(page->get_child()->get_first_child()->gobj())) {
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webkit_web_view_go_back(webview);
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}
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}
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});
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forward_button->signal_clicked().connect([this]() {
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auto page = content_manager->get_last_operated_page();
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if(page) {
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if(auto webview = WEBKIT_WEB_VIEW(page->get_child()->get_first_child()->gobj())) {
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webkit_web_view_go_forward(webview);
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}
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}
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});
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reload_button->signal_clicked().connect([this]() {
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auto page = content_manager->get_last_operated_page();
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if(page) {
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if(auto webview = WEBKIT_WEB_VIEW(page->get_child()->get_first_child()->gobj())) {
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webkit_web_view_reload(webview);
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}
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}
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});
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// Search bar
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// TODO: provide history, provide a menu button with the other engines
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auto search_bar = Gtk::make_managed<Gtk::Entry>();
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search_bar->set_placeholder_text("Search");
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search_bar->set_hexpand(true);
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if(search_engines.empty()) {
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search_bar->set_sensitive(false);
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search_bar->set_placeholder_text("No search");
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}
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auto search_callback = [this, search_bar, content_stack]() {
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// Create a new tab with the search results
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if(content_manager->get_last_operated_page()) {
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on_new_tab(nullptr);
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} else {
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on_new_tab(content_stack);
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}
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auto page = content_manager->get_last_operated_page();
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if(page) {
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if(auto webview = WEBKIT_WEB_VIEW(page->get_child()->get_first_child()->gobj())) {
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auto search_url = default_search_engine->get_search_url(search_bar->get_text());
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webkit_web_view_load_uri(webview, search_url.c_str());
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}
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}
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};
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if(default_search_engine) {
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search_bar->signal_activate().connect(search_callback);
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}
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// Assemble the toolbar
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main_toolbar->append(*back_button);
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main_toolbar->append(*forward_button);
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main_toolbar->append(*reload_button);
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main_toolbar->append(*url_bar);
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main_toolbar->append(*go_button);
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main_toolbar->append(*search_bar);
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if(default_search_engine) {
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auto search_button = Gtk::make_managed<Gtk::Button>(default_search_engine->name);
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search_button->signal_clicked().connect(search_callback);
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main_toolbar->append(*search_button);
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}
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outer_grid->attach(*main_toolbar, 0, 0, 2, 1);
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window->set_child(*outer_grid);
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debug_button->signal_clicked().connect([this]() {
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if(content_manager->get_last_operated_page()) {
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std::cout << "Last operated page: " << content_manager->get_last_operated_page()->get_name() << std::endl;
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} else {
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std::cout << "No page operated!" << std::endl;
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}
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});
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// TODO: Use the last operated page and allow opening tabs next to the last operated page using certain panes
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// Load the existing layout, if it exists
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std::ifstream layout_file_in("layout.json");
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if(layout_file_in) {
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std::string layout_json((std::istreambuf_iterator<char>(layout_file_in)), std::istreambuf_iterator<char>());
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layout_file_in.close();
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layout_manager->restore_json_layout(layout_json);
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} else {
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// Create a new layout if the file doesn't exist
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layout_file_in.close();
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dock_stack_1->add_pane(*pane_1);
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dock_stack_1->add_pane(*pane_3);
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dock_stack_2->add_pane(*pane_2);
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std::ofstream layout_file_out("layout.json");
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layout_file_out << layout_manager->get_layout_as_json();
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layout_file_out.close();
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}
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// Save the layout when changed
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layout_manager->signal_pane_moved.connect([this](gPanthera::DockablePane *pane) {
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std::ofstream layout_file_out("layout.json");
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layout_file_out << layout_manager->get_layout_as_json();
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layout_file_out.close();
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std::cout << "Layout changed: " << layout_manager->get_layout_as_json() << std::endl;
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});
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auto new_tab_action = Gio::SimpleAction::create("new_tab");
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new_tab_action->signal_activate().connect([this](const Glib::VariantBase&) {
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on_new_tab(nullptr);
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});
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add_action(new_tab_action);
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set_accels_for_action("app.new_tab", {"<Primary>T"});
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auto close_tab_action = Gio::SimpleAction::create("close_tab");
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close_tab_action->signal_activate().connect([this](const Glib::VariantBase&) {
432
auto page = content_manager->get_last_operated_page();
433
if(page) {
434
page->close();
435
}
436
});
437
add_action(close_tab_action);
438
set_accels_for_action("app.close_tab", {"<Primary>W"});
439
// Load plugins
441
std::ifstream plugin_file_in("plugins.json");
442
if(plugin_file_in) {
443
std::string plugin_json((std::istreambuf_iterator<char>(plugin_file_in)), std::istreambuf_iterator<char>());
444
plugin_file_in.close();
445
auto json = nlohmann::json::parse(plugin_json);
446
for(auto &plugin : json) {
447
auto plugin_path = plugin["path"].get<std::string>();
448
load_plugin(plugin_path);
449
}
450
} else {
451
plugin_file_in.close();
452
auto empty_json = nlohmann::json::array();
453
std::ofstream plugin_file_out("plugins.json");
454
plugin_file_out << empty_json.dump(4);
455
plugin_file_out.close();
456
}
457
}
458
void on_activate() override {
460
window->present();
461
}
462
void set_search_engines_from_json(const std::string &json_string) {
464
auto json = nlohmann::json::parse(json_string);
465
Glib::ustring default_search_engine_name;
466
for(auto &engine : json) {
467
SearchEngine search_engine;
468
search_engine.name = engine["name"].get<std::string>();
469
search_engine.url = engine["url"].get<std::string>();
470
search_engines.push_back(search_engine);
471
if(engine.contains("default") && engine["default"].get<bool>()) {
472
default_search_engine_name = engine["name"].get<std::string>();
473
}
474
}
475
for(auto &search_engine : search_engines) {
476
if(search_engine.name == default_search_engine_name) {
477
default_search_engine = &search_engine;
478
break;
479
}
480
}
481
}
482
public:
483
static Glib::RefPtr<PantheraWww> create() {
484
return Glib::make_refptr_for_instance<PantheraWww>(new PantheraWww());
485
}
486
std::shared_ptr<gPanthera::LayoutManager> get_layout_manager() {
488
return layout_manager;
489
}
490
std::shared_ptr<gPanthera::ContentManager> get_content_manager() {
492
return content_manager;
493
}
494
void load_plugin(const std::string &plugin_path) {
496
void *handle = dlopen(plugin_path.c_str(), RTLD_LAZY | RTLD_GLOBAL);
497
if(!handle) {
498
std::cerr << "Failed to load plugin: " << dlerror() << std::endl;
499
return;
500
}
501
auto entrypoint = (plugin_entrypoint_type)dlsym(handle, "plugin_init");
502
if(!entrypoint) {
503
std::cerr << "Failed to find entrypoint in plugin: " << dlerror() << std::endl;
504
dlclose(handle);
505
return;
506
}
507
entrypoint();
508
}
509
};
510
Glib::RefPtr<PantheraWww> app = nullptr;
512
extern "C" {
514
void panthera_log(const char *message) {
515
std::cerr << message << std::endl;
516
}
517
void panthera_add_pane(const char *id, const char *label, GtkImage *icon, GtkWidget *pane) {
519
auto pane_child = Glib::wrap(pane);
520
auto icon_cc = Glib::wrap(icon);
521
auto label_cc = Glib::ustring(label);
522
auto id_cc = Glib::ustring(id);
523
auto new_pane = Gtk::make_managed<gPanthera::DockablePane>(app->get_layout_manager(), *pane_child, id_cc, label_cc, icon_cc);
524
app->get_layout_manager()->add_pane(new_pane);
525
}
526
}
527
int main(int argc, char *argv[]) {
529
gPanthera::init();
530
app = PantheraWww::create();
531
return app->run(argc, argv);
532
}