1//go:build webkit_cgo
2
3package webkit
4
5/*
6#cgo pkg-config: webkitgtk-6.0 gtk4 javascriptcoregtk-6.0
7#include <stdlib.h>
8#include <gtk/gtk.h>
9#include <webkit/webkit.h>
10#include <glib-object.h>
11#include <gdk/gdk.h>
12#include <jsc/jsc.h>
13#include <glib.h>
14#include <gio/gio.h>
15
16static GtkWidget* new_window() { return GTK_WIDGET(gtk_window_new()); }
17// GTK4: gtk_main_quit removed; leave as no-op for now (Quit handled in Go)
18static void connect_destroy_quit(GtkWidget* w) { (void)w; }
19static WebKitWebView* as_webview(GtkWidget* w) { return WEBKIT_WEB_VIEW(w); }
20// WebsiteDataManager creation will be handled via GTK4/WebKit6 APIs in Go code.
21
22// Forward declare helpers used below
23static void maybe_set_cookie_policy(WebKitCookieManager* cm, int policy);
24
25// Construct a WebKitWebView via g_object_new with a fresh UserContentManager.
26static GtkWidget* new_webview_with_ucm_and_session(const char* data_dir, const char* cache_dir, const char* cookie_path, WebKitUserContentManager** out_ucm) {
27 WebKitUserContentManager* u = webkit_user_content_manager_new();
28 if (!u) return NULL;
29 // WebKitGTK 6: create NetworkSession with data/cache directories
30 WebKitNetworkSession* sess = webkit_network_session_new(
31 data_dir ? data_dir : "",
32 cache_dir ? cache_dir : "");
33 if (!sess) { g_object_unref(u); return NULL; }
34 // Configure cookie persistence and policy (no third-party by default)
35 WebKitCookieManager* cm = webkit_network_session_get_cookie_manager(sess);
36 if (cm) {
37 if (cookie_path && cookie_path[0]) {
38 webkit_cookie_manager_set_persistent_storage(cm, cookie_path, WEBKIT_COOKIE_PERSISTENT_STORAGE_SQLITE);
39 }
40 // 2 => no-third-party (default), 0 => always, 1 => never
41 maybe_set_cookie_policy(cm, 2);
42 }
43 // Persist credentials (HTTP auth, etc.)
44 webkit_network_session_set_persistent_credential_storage_enabled(sess, TRUE);
45 GtkWidget* w = GTK_WIDGET(g_object_new(WEBKIT_TYPE_WEB_VIEW,
46 "user-content-manager", u,
47 "network-session", sess,
48 NULL));
49 // WebView holds refs to provided objects; drop our temporary refs
50 g_object_unref(sess);
51 if (out_ucm) { *out_ucm = u; }
52 return w;
53}
54
55static gboolean gtk_prefers_dark() {
56 GtkSettings* settings = gtk_settings_get_default();
57 if (!settings) return FALSE;
58 gboolean prefer = FALSE;
59 g_object_get(settings, "gtk-application-prefer-dark-theme", &prefer, NULL);
60 return prefer;
61}
62
63// Note: preferred color scheme is handled via a user script injection to support
64// older WebKitGTK versions without the color-scheme API. See enableUserContentManager.
65
66extern void goOnUcmMessage(unsigned long id, const char* json);
67extern void goOnTitleChanged(unsigned long id, const char* title);
68extern void goOnURIChanged(unsigned long id, const char* uri);
69extern void goOnThemeChanged(unsigned long id, int prefer_dark);
70extern void* goResolveURIScheme(char* uri, size_t* out_len, char** out_mime);
71
72void on_title_notify(GObject* obj, GParamSpec* pspec, gpointer user_data) {
73 (void)pspec;
74 WebKitWebView* view = WEBKIT_WEB_VIEW(obj);
75 const gchar* title = webkit_web_view_get_title(view);
76 GtkWindow* win = GTK_WINDOW(user_data);
77 if (title && win) {
78 gtk_window_set_title(win, title);
79 }
80}
81
82void on_title_notify_id(GObject* obj, GParamSpec* pspec, gpointer user_data) {
83 (void)pspec; (void)obj;
84 const gchar* title = webkit_web_view_get_title(WEBKIT_WEB_VIEW(obj));
85 if (title) { goOnTitleChanged((unsigned long)user_data, title); }
86}
87
88void on_uri_notify(GObject* obj, GParamSpec* pspec, gpointer user_data) {
89 (void)pspec; (void)obj;
90 const gchar* uri = webkit_web_view_get_uri(WEBKIT_WEB_VIEW(obj));
91 if (uri) { goOnURIChanged((unsigned long)user_data, uri); }
92}
93
94// React to GTK theme preference changes at runtime
95void on_theme_changed(GObject* obj, GParamSpec* pspec, gpointer user_data) {
96 (void)pspec;
97 GtkSettings* settings = GTK_SETTINGS(obj);
98 if (!settings) return;
99 gboolean prefer = FALSE;
100 g_object_get(settings, "gtk-application-prefer-dark-theme", &prefer, NULL);
101 goOnThemeChanged((unsigned long)user_data, prefer ? 1 : 0);
102}
103
104// NOTE: UCM message callback signature changed in WebKitGTK 6; will be reimplemented later.
105
106void on_uri_scheme(WebKitURISchemeRequest* request, gpointer user_data) {
107 (void)user_data;
108 const gchar* uri = webkit_uri_scheme_request_get_uri(request);
109 size_t n = 0;
110 char* mime = NULL;
111 void* buf = goResolveURIScheme((char*)uri, &n, &mime);
112 if (buf && n > 0 && mime) {
113 GInputStream* stream = g_memory_input_stream_new_from_data(buf, (gssize)n, g_free);
114 webkit_uri_scheme_request_finish(request, stream, (gint64)n, mime);
115 g_object_unref(stream);
116 g_free(mime);
117 } else {
118 GError* err = g_error_new_literal(g_quark_from_string("dumber"), 404, "Not found");
119 webkit_uri_scheme_request_finish_error(request, err);
120 g_error_free(err);
121 }
122}
123
124// Script message handler wiring for WebKitGTK 6
125// Forward declaration for callback used in g_signal_connect_data
126// WebKitGTK 6 delivers JSCValue* for script-message-received::NAME
127static void ucm_on_script_message_cb(WebKitUserContentManager* ucm, JSCValue* val, gpointer user_data);
128// Uses WebKitScriptMessage and script-message-received::NAME signal.
129static void ucm_on_script_message_cb(WebKitUserContentManager* ucm, JSCValue* val, gpointer user_data) {
130 (void)ucm;
131 if (!val) return;
132 gchar* s = jsc_value_to_string(val);
133 if (!s) return;
134 goOnUcmMessage((unsigned long)user_data, s);
135 g_free(s);
136}
137
138static gboolean register_ucm_handler(WebKitUserContentManager* ucm, const char* name, unsigned long id) {
139 if (!ucm || !name) return FALSE;
140 // WebKitGTK 6 signature: (ucm, name, world_name)
141 webkit_user_content_manager_register_script_message_handler(ucm, name, NULL);
142 gchar* signal = g_strdup_printf("script-message-received::%s", name);
143 if (!signal) return FALSE;
144 g_signal_connect_data(G_OBJECT(ucm), signal, G_CALLBACK(ucm_on_script_message_cb), (gpointer)id, NULL, 0);
145 g_free(signal);
146 return TRUE;
147}
148
149// ----- Conditional helpers for settings across WebKit versions -----
150#ifndef WEBKIT_CHECK_VERSION
151#define WEBKIT_CHECK_VERSION(major,minor,micro) (0)
152#endif
153
154static void maybe_set_hw_policy(WebKitSettings* settings, int mode) {
155#if WEBKIT_CHECK_VERSION(2,40,0)
156 // mode: 0=ON_DEMAND, 1=ALWAYS, 2=NEVER
157 if (!settings) return;
158 if (mode == 1) {
159 webkit_settings_set_hardware_acceleration_policy(settings, WEBKIT_HARDWARE_ACCELERATION_POLICY_ALWAYS);
160 } else if (mode == 2) {
161 webkit_settings_set_hardware_acceleration_policy(settings, WEBKIT_HARDWARE_ACCELERATION_POLICY_NEVER);
162 } else {
163 // Leave default policy (auto) without forcing a value to avoid referencing
164 // WEBKIT_HARDWARE_ACCELERATION_POLICY_ON_DEMAND on older headers.
165 }
166#else
167 (void)settings; (void)mode;
168#endif
169}
170
171static void maybe_set_draw_indicators(WebKitSettings* settings, int enable) {
172#if WEBKIT_CHECK_VERSION(2,36,0)
173 if (!settings) return;
174 webkit_settings_set_draw_compositing_indicators(settings, enable ? 1 : 0);
175#else
176 (void)settings; (void)enable;
177#endif
178}
179
180static void maybe_set_webgl(WebKitSettings* settings, int enable) {
181#if WEBKIT_CHECK_VERSION(2,20,0)
182 if (!settings) return;
183 webkit_settings_set_enable_webgl(settings, enable ? 1 : 0);
184#else
185 (void)settings; (void)enable;
186#endif
187}
188
189static void maybe_set_canvas_accel(WebKitSettings* settings, int enable) {
190#if WEBKIT_CHECK_VERSION(2,20,0)
191 if (!settings) return;
192 webkit_settings_set_enable_2d_canvas_acceleration(settings, enable ? 1 : 0);
193#else
194 (void)settings; (void)enable;
195#endif
196}
197
198static void maybe_set_media_user_gesture(WebKitSettings* settings, int require) {
199#if WEBKIT_CHECK_VERSION(2,20,0)
200 if (!settings) return;
201 webkit_settings_set_media_playback_requires_user_gesture(settings, require ? 1 : 0);
202#else
203 (void)settings; (void)require;
204#endif
205}
206
207// Set cookie accept policy with compile-time compatibility across WebKit versions
208static void maybe_set_cookie_policy(WebKitCookieManager* cm, int policy) {
209 if (!cm) return;
210#if defined(WEBKIT_COOKIE_ACCEPT_POLICY_ALWAYS)
211 WebKitCookieAcceptPolicy p = WEBKIT_COOKIE_ACCEPT_POLICY_ALWAYS;
212 if (policy == 1) p = WEBKIT_COOKIE_ACCEPT_POLICY_NEVER; // never
213 else if (policy == 2) p = WEBKIT_COOKIE_ACCEPT_POLICY_NO_THIRD_PARTY; // no third-party
214 webkit_cookie_manager_set_accept_policy(cm, p);
215#elif defined(WEBKIT_COOKIE_POLICY_ACCEPT_ALWAYS)
216 WebKitCookieAcceptPolicy p = WEBKIT_COOKIE_POLICY_ACCEPT_ALWAYS;
217 if (policy == 1) p = WEBKIT_COOKIE_POLICY_ACCEPT_NEVER;
218 else if (policy == 2) p = WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY;
219 webkit_cookie_manager_set_accept_policy(cm, p);
220#else
221 (void)policy; // Not supported in this header version
222#endif
223}
224*/
225import "C"
226
227import (
228 "errors"
229 "log"
230 "os"
231 "path/filepath"
232 "runtime"
233 "unsafe"
234)
235
236const omniboxDefaultScript = `(() => {
237 try {
238 if (window.__dumber_omnibox_loaded) return; window.__dumber_omnibox_loaded = true;
239 const H = { el:null,input:null,list:null,visible:false,suggestions:[],debounceTimer:0,
240 post(m){ try{ window.webkit?.messageHandlers?.dumber?.postMessage(JSON.stringify(m)); }catch(_){} },
241 render(){ if(!this.el) this.mount(); this.el.style.display=this.visible?'block':'none'; if(this.visible) this.input.focus(); },
242 mount(){ const r=document.createElement('div'); r.style.cssText='position:fixed;inset:0;z-index:2147483647;display:none;';
243 const b=document.createElement('div'); b.style.cssText='max-width:720px;margin:8vh auto;padding:10px 12px;background:#16181a;color:#e6e6e6;border:1px solid #2a2e33;border-radius:10px;box-shadow:0 12px 36px rgba(0,0,0,.55);backdrop-filter:saturate(120%) blur(2px);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,\"Helvetica Neue\",Arial,sans-serif;';
244 const i=document.createElement('input'); i.type='text'; i.placeholder='Type URL or search…'; i.style.cssText='display:block;width:100%;box-sizing:border-box;padding:12px 14px;border-radius:8px;border:1px solid #3a3f45;background:#0f1113;color:#e6e6e6;font-size:15px;outline:none;';
245 const l=document.createElement('div'); l.style.cssText='margin-top:10px;max-height:52vh;overflow:auto;border-top:1px solid #2a2e33;';
246 b.appendChild(i); b.appendChild(l); r.appendChild(b); document.documentElement.appendChild(r);
247 i.addEventListener('keydown', (e)=>{ if(e.key==='Escape'){H.toggle(false);} else if(e.key==='Enter'){ const pick=H.suggestions[H.selectedIndex|0]; const v=(pick&&pick.url)||i.value||''; if(v) H.post({type:'navigate', url:v}); H.toggle(false);} else if(e.key==='ArrowDown' || e.key==='ArrowUp'){ e.preventDefault(); const n=H.suggestions.length; if(n){ H.selectedIndex=(H.selectedIndex||0)+(e.key==='ArrowDown'?1:-1); if(H.selectedIndex<0)H.selectedIndex=n-1; if(H.selectedIndex>=n)H.selectedIndex=0; H.paintList(); } } });
248 i.addEventListener('input', ()=>{ clearTimeout(H.debounceTimer); const q=i.value; H.debounceTimer=setTimeout(()=>H.post({type:'query', q, limit:10}), 120); });
249 this.el=r; this.input=i; this.list=l; this.selectedIndex=-1; this.paintList(); },
250 paintList(){ const l=this.list; if(!l) return; l.textContent=''; this.suggestions.forEach((s,i)=>{ const it=document.createElement('div'); it.style.cssText='padding:10px 12px;display:flex;gap:10px;align-items:center;cursor:pointer;border-bottom:1px solid #252a2f;'+(i===this.selectedIndex?'background:#0c0f12;':'');
251 const icon=document.createElement('img'); icon.src=s.favicon||''; icon.width=18; icon.height=18; icon.loading='lazy'; icon.style.cssText='flex:0 0 18px;width:18px;height:18px;border-radius:4px;opacity:.95;'; icon.onerror=()=>{ icon.style.display='none'; };
252 const url=document.createElement('div'); url.textContent=s.url||''; url.style.cssText='flex:1;min-width:0;color:#cfe6ff;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;';
253 it.appendChild(icon); it.appendChild(url);
254 it.addEventListener('mouseenter',()=>{ H.selectedIndex=i; H.paintList(); });
255 it.addEventListener('click',()=>{ H.post({type:'navigate', url:s.url}); H.toggle(false); });
256 l.appendChild(it);
257 }); },
258 toggle(v){ this.visible=(typeof v==='boolean')?v:!this.visible; this.render(); }, setSuggestions(a){ this.suggestions=Array.isArray(a)?a:[]; this.selectedIndex=-1; this.paintList(); }
259 };
260 window.addEventListener('keydown', (e)=>{ if((e.ctrlKey||e.metaKey) && (e.key==='l'||e.key==='L')){ e.preventDefault(); H.toggle(true); } }, true);
261 window.__dumber_setSuggestions = (a)=> H.setSuggestions(a);
262 window.__dumber_toggle = ()=> H.toggle();
263 } catch(_){}
264})();`
265
266type nativeView struct {
267 win *C.GtkWidget
268 view *C.GtkWidget
269 wv *C.WebKitWebView
270 ucm *C.WebKitUserContentManager
271}
272
273// WebView represents a browser view powered by WebKit2GTK.
274type WebView struct {
275 config *Config
276 zoom float64
277 url string
278 destroyed bool
279 native *nativeView
280 window *Window
281 id uintptr
282 msgHandler func(payload string)
283 titleHandler func(title string)
284 uriHandler func(uri string)
285}
286
287// NewWebView constructs a new WebView instance with native WebKit2GTK widgets.
288func NewWebView(cfg *Config) (*WebView, error) {
289 log.Printf("[webkit] Initializing GTK and creating WebView (CGO)")
290 if C.gtk_init_check() == 0 {
291 return nil, errors.New("failed to initialize GTK")
292 }
293
294 if cfg == nil {
295 cfg = &Config{}
296 }
297
298 // Prepare persistent website data/caches
299 dataDir := cfg.DataDir
300 cacheDir := cfg.CacheDir
301 if dataDir == "" { dataDir = filepath.Join(os.TempDir(), "dumber-webkit-data") }
302 if cacheDir == "" { cacheDir = filepath.Join(os.TempDir(), "dumber-webkit-cache") }
303 _ = os.MkdirAll(dataDir, 0o755)
304 _ = os.MkdirAll(cacheDir, 0o755)
305
306 cData := C.CString(dataDir)
307 cCache := C.CString(cacheDir)
308 cookieFile := filepath.Join(dataDir, "cookies.db")
309 cCookie := C.CString(cookieFile)
310 defer C.free(unsafe.Pointer(cData))
311 defer C.free(unsafe.Pointer(cCache))
312 defer C.free(unsafe.Pointer(cCookie))
313 // Use default WebContext to register the custom URI scheme handler; the
314 // WebView itself is created with a WebKitNetworkSession for persistence.
315 ctx := C.webkit_web_context_get_default()
316
317 // Register custom URI scheme handler for "dumb://"
318 {
319 sch := C.CString("dumb")
320 C.webkit_web_context_register_uri_scheme(ctx, sch, (C.WebKitURISchemeRequestCallback)(C.on_uri_scheme), nil, nil)
321 C.free(unsafe.Pointer(sch))
322 }
323 // Cookie manager persistent storage handled via NetworkSession in new_webview_with_ucm_and_session
324
325 // Create WebView through g_object_new with a fresh UCM (GTK4/WebKit 6 style)
326 var createdUcm *C.WebKitUserContentManager
327 viewWidget := C.new_webview_with_ucm_and_session(cData, cCache, cCookie, &createdUcm)
328 if viewWidget == nil {
329 return nil, errors.New("failed to create WebKitWebView")
330 }
331
332 // Create a top-level window to host the view
333 win := C.new_window()
334 if win == nil {
335 return nil, errors.New("failed to create GtkWindow")
336 }
337
338 // Pack view widget into the window
339 // GTK4: containers removed; use gtk_window_set_child
340 C.gtk_window_set_child((*C.GtkWindow)(unsafe.Pointer(win)), viewWidget)
341 C.gtk_window_set_default_size((*C.GtkWindow)(unsafe.Pointer(win)), 1024, 768)
342 C.connect_destroy_quit(win)
343
344 v := &WebView{
345 config: cfg,
346 zoom: 1.0,
347 native: &nativeView{win: win, view: viewWidget, wv: C.as_webview(viewWidget), ucm: createdUcm},
348 window: &Window{win: win},
349 }
350 // Assign an ID for accelerator dispatch
351 v.id = nextViewID()
352 registerView(v.id, v)
353 // Attach GTK4 input controllers (keyboard, mouse)
354 AttachKeyboardControllers(v)
355
356 // Watch for GTK theme changes and propagate to page at runtime
357 if settings := C.gtk_settings_get_default(); settings != nil {
358 cprop := C.CString("notify::gtk-application-prefer-dark-theme")
359 C.g_signal_connect_data(C.gpointer(unsafe.Pointer(settings)), cprop, C.GCallback(C.on_theme_changed), C.gpointer(v.id), nil, 0)
360 C.free(unsafe.Pointer(cprop))
361 }
362
363 // Native zoom shortcuts (independent of app services)
364 // Ctrl+='=' and Ctrl+'+' → Zoom In; Ctrl+'-' → Zoom Out; Ctrl+'0' → Reset
365 _ = v.RegisterKeyboardShortcut("cmdorctrl+=", func() {
366 nz := v.zoom
367 if nz <= 0 { nz = 1.0 }
368 nz *= 1.1
369 if nz < 0.25 { nz = 0.25 }
370 if nz > 5.0 { nz = 5.0 }
371 _ = v.SetZoom(nz)
372 })
373 _ = v.RegisterKeyboardShortcut("cmdorctrl+plus", func() {
374 nz := v.zoom
375 if nz <= 0 { nz = 1.0 }
376 nz *= 1.1
377 if nz < 0.25 { nz = 0.25 }
378 if nz > 5.0 { nz = 5.0 }
379 _ = v.SetZoom(nz)
380 })
381 _ = v.RegisterKeyboardShortcut("cmdorctrl-", func() {
382 nz := v.zoom
383 if nz <= 0 { nz = 1.0 }
384 nz /= 1.1
385 if nz < 0.25 { nz = 0.25 }
386 if nz > 5.0 { nz = 5.0 }
387 _ = v.SetZoom(nz)
388 })
389 _ = v.RegisterKeyboardShortcut("cmdorctrl+0", func() { _ = v.SetZoom(1.0) })
390 // Update window title when page title changes
391 cNotifyTitle1 := C.CString("notify::title")
392 C.g_signal_connect_data(C.gpointer(unsafe.Pointer(viewWidget)), cNotifyTitle1, C.GCallback(C.on_title_notify), C.gpointer(unsafe.Pointer(win)), nil, 0)
393 C.free(unsafe.Pointer(cNotifyTitle1))
394 // Also dispatch title change to Go with view id
395 cNotifyTitle2 := C.CString("notify::title")
396 C.g_signal_connect_data(C.gpointer(unsafe.Pointer(viewWidget)), cNotifyTitle2, C.GCallback(C.on_title_notify_id), C.gpointer(v.id), nil, 0)
397 C.free(unsafe.Pointer(cNotifyTitle2))
398 // Notify URI changes to Go to keep current URL in sync
399 cNotifyURI := C.CString("notify::uri")
400 C.g_signal_connect_data(C.gpointer(unsafe.Pointer(viewWidget)), cNotifyURI, C.GCallback(C.on_uri_notify), C.gpointer(v.id), nil, 0)
401 C.free(unsafe.Pointer(cNotifyURI))
402 // Apply hardware acceleration and related settings based on cfg.Rendering
403 if settings := C.webkit_web_view_get_settings(v.native.wv); settings != nil {
404 // Hardware acceleration policy (guarded by version)
405 switch cfg.Rendering.Mode {
406 case "gpu":
407 C.maybe_set_hw_policy(settings, 1)
408 C.maybe_set_webgl(settings, 1)
409 C.maybe_set_canvas_accel(settings, 1)
410 case "cpu":
411 C.maybe_set_hw_policy(settings, 2)
412 C.maybe_set_webgl(settings, 0)
413 C.maybe_set_canvas_accel(settings, 0)
414 default: // auto
415 C.maybe_set_hw_policy(settings, 0)
416 C.maybe_set_webgl(settings, 1)
417 C.maybe_set_canvas_accel(settings, 1)
418 }
419 // Optional compositing indicators for debugging (guarded by version)
420 if cfg.Rendering.DebugGPU { C.maybe_set_draw_indicators(settings, 1) }
421 // Reduce media pipeline churn by requiring a user gesture for playback
422 C.maybe_set_media_user_gesture(settings, 1)
423 }
424
425 if cfg.ZoomDefault > 0 {
426 v.zoom = cfg.ZoomDefault
427 C.webkit_web_view_set_zoom_level(v.native.wv, C.gdouble(v.zoom))
428 }
429 if cfg.EnableDeveloperExtras {
430 settings := C.webkit_web_view_get_settings(v.native.wv)
431 if settings != nil {
432 C.webkit_settings_set_enable_developer_extras(settings, C.gboolean(1))
433 }
434 }
435 // Apply default fonts if provided in cfg
436 if settings := C.webkit_web_view_get_settings(v.native.wv); settings != nil {
437 if cfg.DefaultSansFont != "" {
438 csans := C.CString(cfg.DefaultSansFont)
439 C.webkit_settings_set_sans_serif_font_family(settings, (*C.gchar)(csans))
440 C.free(unsafe.Pointer(csans))
441 // Also set default font family to sans
442 csans2 := C.CString(cfg.DefaultSansFont)
443 C.webkit_settings_set_default_font_family(settings, (*C.gchar)(csans2))
444 C.free(unsafe.Pointer(csans2))
445 }
446 if cfg.DefaultSerifFont != "" {
447 cserif := C.CString(cfg.DefaultSerifFont)
448 C.webkit_settings_set_serif_font_family(settings, (*C.gchar)(cserif))
449 C.free(unsafe.Pointer(cserif))
450 }
451 if cfg.DefaultMonospaceFont != "" {
452 cmono := C.CString(cfg.DefaultMonospaceFont)
453 C.webkit_settings_set_monospace_font_family(settings, (*C.gchar)(cmono))
454 C.free(unsafe.Pointer(cmono))
455 }
456 if cfg.DefaultFontSize > 0 {
457 C.webkit_settings_set_default_font_size(settings, C.guint(cfg.DefaultFontSize))
458 }
459 }
460 if cfg.InitialURL != "" {
461 _ = v.LoadURL(cfg.InitialURL)
462 }
463 // Ensure native resources are released if user forgets to call Destroy
464 runtime.SetFinalizer(v, func(v *WebView) { _ = v.Destroy() })
465 log.Printf("[webkit] WebView created (CGO)")
466
467 // Initialize UCM scripts and handlers
468 if v.native != nil && v.native.ucm != nil {
469 v.enableUserContentManager()
470 }
471 return v, nil
472}
473
474func (w *WebView) LoadURL(rawURL string) error {
475 if w == nil || w.destroyed || w.native == nil || w.native.wv == nil {
476 return ErrNotImplemented
477 }
478 w.url = rawURL
479 curl := C.CString(rawURL)
480 defer C.free(unsafe.Pointer(curl))
481 C.webkit_web_view_load_uri(w.native.wv, (*C.gchar)(curl))
482 log.Printf("[webkit] LoadURL: %s", rawURL)
483 return nil
484}
485
486func (w *WebView) Show() error {
487 if w == nil || w.destroyed || w.native == nil || w.native.win == nil {
488 return ErrNotImplemented
489 }
490 C.gtk_widget_set_visible(w.native.view, C.gboolean(1))
491 C.gtk_widget_set_visible(w.native.win, C.gboolean(1))
492 C.gtk_window_present((*C.GtkWindow)(unsafe.Pointer(w.native.win)))
493 log.Printf("[webkit] Show window")
494 return nil
495}
496
497func (w *WebView) Hide() error {
498 if w == nil || w.destroyed || w.native == nil || w.native.win == nil {
499 return ErrNotImplemented
500 }
501 C.gtk_widget_set_visible(w.native.view, C.gboolean(0))
502 C.gtk_widget_set_visible(w.native.win, C.gboolean(0))
503 return nil
504}
505
506func (w *WebView) Destroy() error {
507 if w == nil || w.native == nil || w.native.win == nil {
508 return ErrNotImplemented
509 }
510 // GTK4: destroy windows via gtk_window_destroy
511 C.gtk_window_destroy((*C.GtkWindow)(unsafe.Pointer(w.native.win)))
512 w.destroyed = true
513 unregisterView(w.id)
514 log.Printf("[webkit] Destroy window")
515 return nil
516}
517
518// Window returns the associated native window.
519func (w *WebView) Window() *Window { return w.window }
520
521// GetCurrentURL returns the current URI from WebKit.
522func (w *WebView) GetCurrentURL() string {
523 if w == nil || w.native == nil || w.native.wv == nil { return "" }
524 uri := C.webkit_web_view_get_uri(w.native.wv)
525 if uri == nil { return "" }
526 return C.GoString((*C.char)(unsafe.Pointer(uri)))
527}
528
529func (w *WebView) GoBack() error {
530 if w == nil || w.native == nil || w.native.wv == nil { return ErrNotImplemented }
531 C.webkit_web_view_go_back(w.native.wv)
532 return nil
533}
534
535func (w *WebView) GoForward() error {
536 if w == nil || w.native == nil || w.native.wv == nil { return ErrNotImplemented }
537 C.webkit_web_view_go_forward(w.native.wv)
538 return nil
539}
540
541// RegisterScriptMessageHandler registers a callback invoked when the content script posts a message.
542func (w *WebView) RegisterScriptMessageHandler(cb func(payload string)) { w.msgHandler = cb }
543
544func (w *WebView) dispatchScriptMessage(payload string) {
545 if w != nil && w.msgHandler != nil { w.msgHandler(payload) }
546}
547
548// RegisterTitleChangedHandler registers a callback invoked when the page title changes.
549func (w *WebView) RegisterTitleChangedHandler(cb func(title string)) { w.titleHandler = cb }
550
551func (w *WebView) dispatchTitleChanged(title string) {
552 if w != nil && w.titleHandler != nil { w.titleHandler(title) }
553}
554
555// RegisterURIChangedHandler registers a callback invoked when the current page URI changes.
556func (w *WebView) RegisterURIChangedHandler(cb func(uri string)) { w.uriHandler = cb }
557
558func (w *WebView) dispatchURIChanged(uri string) {
559 if w != nil && w.uriHandler != nil { w.uriHandler(uri) }
560}
561
562// enableUserContentManager registers the 'dumber' message handler and injects the omnibox script.
563func (w *WebView) enableUserContentManager() {
564 if w == nil || w.native == nil || w.native.ucm == nil { return }
565 // Register handler "dumber"
566 cname := C.CString("dumber")
567 ok := C.register_ucm_handler(w.native.ucm, cname, C.ulong(w.id))
568 if ok == 0 {
569 log.Printf("[webkit] Failed to register UCM handler; fallback bridge will handle messages")
570 }
571 C.free(unsafe.Pointer(cname))
572
573 // Inject color-scheme preference script at document-start to inform sites of system theme
574 preferDark := C.gtk_prefers_dark() != 0
575 if preferDark {
576 log.Printf("[theme] GTK prefers: dark")
577 } else {
578 log.Printf("[theme] GTK prefers: light")
579 }
580 var schemeJS string
581 if preferDark {
582 schemeJS = "(() => { try { const d=true; const cs=d?'dark':'light'; console.log('[dumber] color-scheme set:' + cs); try{ window.webkit?.messageHandlers?.dumber?.postMessage(JSON.stringify({type:'theme', value: cs})) }catch(_){} const meta=document.createElement('meta'); meta.name='color-scheme'; meta.content='dark light'; document.documentElement.appendChild(meta); const s=document.createElement('style'); s.textContent=':root{color-scheme:dark;}'; document.documentElement.appendChild(s); const qD='(prefers-color-scheme: dark)'; const qL='(prefers-color-scheme: light)'; const orig=window.matchMedia; window.matchMedia=function(q){ if(typeof q==='string'&&(q.includes(qD)||q.includes(qL))){ const m={matches:q.includes('dark')?d:!d,media:q,onchange:null,addListener(){},removeListener(){},addEventListener(){},removeEventListener(){},dispatchEvent(){return false;}}; return m;} return orig.call(window,q); }; } catch(e){ console.warn('[dumber] color-scheme injection failed', e) } })();"
583 } else {
584 schemeJS = "(() => { try { const d=false; const cs=d?'dark':'light'; console.log('[dumber] color-scheme set:' + cs); try{ window.webkit?.messageHandlers?.dumber?.postMessage(JSON.stringify({type:'theme', value: cs})) }catch(_){} const meta=document.createElement('meta'); meta.name='color-scheme'; meta.content='light dark'; document.documentElement.appendChild(meta); const s=document.createElement('style'); s.textContent=':root{color-scheme:light;}'; document.documentElement.appendChild(s); const qD='(prefers-color-scheme: dark)'; const qL='(prefers-color-scheme: light)'; const orig=window.matchMedia; window.matchMedia=function(q){ if(typeof q==='string'&&(q.includes(qD)||q.includes(qL))){ const m={matches:q.includes('dark')?d:!d,media:q,onchange:null,addListener(){},removeListener(){},addEventListener(){},removeEventListener(){},dispatchEvent(){return false;}}; return m;} return orig.call(window,q); }; } catch(e){ console.warn('[dumber] color-scheme injection failed', e) } })();"
585 }
586 cScheme := C.CString(schemeJS)
587 defer C.free(unsafe.Pointer(cScheme))
588 schemeScript := C.webkit_user_script_new((*C.gchar)(cScheme), C.WEBKIT_USER_CONTENT_INJECT_ALL_FRAMES, C.WEBKIT_USER_SCRIPT_INJECT_AT_DOCUMENT_START, nil, nil)
589 if schemeScript != nil {
590 C.webkit_user_content_manager_add_script(w.native.ucm, schemeScript)
591 C.webkit_user_script_unref(schemeScript)
592 }
593
594 // Add user script at document-start
595 src := C.CString(omniboxDefaultScript)
596 defer C.free(unsafe.Pointer(src))
597 script := C.webkit_user_script_new((*C.gchar)(src), C.WEBKIT_USER_CONTENT_INJECT_ALL_FRAMES, C.WEBKIT_USER_SCRIPT_INJECT_AT_DOCUMENT_START, nil, nil)
598 if script != nil {
599 C.webkit_user_content_manager_add_script(w.native.ucm, script)
600 C.webkit_user_script_unref(script)
601 log.Printf("[webkit] UCM omnibox script injected at document-start")
602 }
603
604 // Inject Wails runtime fetch interceptor for homepage bridging
605 wailsBridge := `(() => { try { const origFetch = window.fetch.bind(window); const waiters = Object.create(null); window.__dumber_wails_resolve = (id, json) => { const w = waiters[id]; if(!w) return; delete waiters[id]; try { const headers = new Headers({"Content-Type":"application/json"}); w.resolve(new Response(json, { headers })); } catch(e){ w.reject(e); } }; window.fetch = (input, init) => { try { const url = new URL(input instanceof Request ? input.url : input, window.location.origin); if (url.pathname === '/wails/runtime') { const args = url.searchParams.get('args'); let payload = {}; try { payload = args ? JSON.parse(args) : {}; } catch(_){} const id = String(Date.now()) + '-' + Math.random().toString(36).slice(2); return new Promise((resolve, reject) => { waiters[id] = { resolve, reject }; try { window.webkit?.messageHandlers?.dumber?.postMessage(JSON.stringify({ type: 'wails', id, payload })); } catch (e) { reject(e); } }); } } catch(_){} return origFetch(input, init); }; } catch(_){} })();`
606 cWails := C.CString(wailsBridge)
607 defer C.free(unsafe.Pointer(cWails))
608 wailsScript := C.webkit_user_script_new((*C.gchar)(cWails), C.WEBKIT_USER_CONTENT_INJECT_ALL_FRAMES, C.WEBKIT_USER_SCRIPT_INJECT_AT_DOCUMENT_START, nil, nil)
609 if wailsScript != nil {
610 C.webkit_user_content_manager_add_script(w.native.ucm, wailsScript)
611 C.webkit_user_script_unref(wailsScript)
612 }
613
614 // No JS fallback bridge — native UCM is active
615}