aboutsummaryrefslogtreecommitdiffstats
path: root/src/gtkhtml2/web_gtkhtml2.c
blob: 1cce591f95ea4f4057a4b581668285a7e94d846b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
#include "config.h"
#include <string.h>
#include <glib.h>
#include <glib/gprintf.h>
#include <gtk/gtk.h>
#include <libgtkhtml/gtkhtml.h>
#include <libgtkhtml/dom/core/dom-node.h>
#include <libxml/parser.h>

#include "web.h"
#include "web_history.h"
#include "web_utils.h"
#include "web_request.h"
#include "web_gtkhtml2.h"
#include "web_gtkhtml2_js.h"

static void
web_gtkhtml2_init (gpointer *backend_data, WebPages *pages)
{
	*backend_data = g_new0 (WebGtkhtml2Data, 1);

	((WebGtkhtml2Data*)*backend_data)->pages = pages;
}

void
web_gtkhtml2_dom_foreach (DomNode *node,
			  GFunc function,
			  gpointer user_data)
{
	int i;
	DomNodeList *children;

	function (node, user_data);
	
	if (!dom_Node_hasChildNodes (node))
		return;

	children = dom_Node__get_childNodes (node);
	for (i = 0; i < dom_NodeList__get_length (children); i++) {
		DomNode *child = dom_NodeList__get_item (children, i);
		web_gtkhtml2_dom_foreach (child, function, user_data);
	}
}

DomNode *
web_gtkhtml2_dom_find (DomNode *node,
		       GEqualFunc function,
		       gpointer user_data)
{
	int i;
	DomNodeList *children;

	if (function (node, user_data)) return node;
	
	if (!dom_Node_hasChildNodes (node))
		return;

	children = dom_Node__get_childNodes (node);
	for (i = 0; i < dom_NodeList__get_length (children); i++) {
		DomNode *child = dom_NodeList__get_item (children, i);
		DomNode *return_node;
		return_node = web_gtkhtml2_dom_find (
			child, function, user_data);
		if (return_node)
			return return_node;
	}
	
	return NULL;
}

void
web_gtkhtml2_print_dom (xmlNodePtr node, int depth)
{
	int i;
	xmlNodePtr child;
	
	if (depth == 0)
		g_debug ("--- Printing nodes ---");
	
	for (i = 0; i < depth; i++) g_print (" ");
	g_debug ("Node: %s (%s)", node->name, node->content);

	for (child = node->children; child; child = child->next)
		web_gtkhtml2_print_dom (child, depth + 1);
}

static void
web_gtkhtml2_deinit (gpointer backend_data)
{
	g_free (backend_data);
}

static void
web_gtkhtml2_stream_cancel_cb (HtmlStream *stream, gpointer user_data,
	gpointer cancel_data)
{
	WebRequest *request = cancel_data;
	
	if (!request)
		g_warning ("Stream cancelled after being closed");
	else
		web_request_remove (request);
}

static void
web_gtkhtml2_request_url_cb (HtmlDocument *document, const gchar *url,
	HtmlStream *stream, WebData *data)
{
	WebRequest *request = g_new0 (WebRequest, 1);

	request->parent = data;
	request->url = web_get_abs_url (request->parent->base_url, url);
	request->data = stream;
	request->type = WEB_DATA;
	html_stream_set_cancel_func (stream,
		web_gtkhtml2_stream_cancel_cb, request);
	web_request_perform (request);
}

static void
web_gtkhtml2_set_base_cb (HtmlDocument *document, const gchar *url,
			  WebData *data)
{
	/* Note: Used for <BASE HREF> tag */
/*	g_debug ("Set base URL: %s", url);*/
	if (data->base_url)
		g_free (data->base_url);
	data->base_url = g_strdup (url);
}

typedef struct {
	gchar *url;
	WebData *data;
} WebGtkhtml2SubmitData;

static gboolean
web_gtkhtml2_submit_idle (gpointer data)
{
	WebGtkhtml2SubmitData *wdata = data;
	web_go (wdata->data, wdata->url, FALSE);
	g_free (wdata->url);
	g_free (wdata);
	return FALSE;
}

static void
web_gtkhtml2_submit_cb (HtmlDocument *document, const gchar *method,
			const gchar *url, const gchar *encoding, WebData *data)
{
	g_debug ("Method: %s\nUrl: %s\nEncoding: %s", method, url, encoding);
	if ((!url) || (g_ascii_strcasecmp (url, "GET") == 0)) {
		WebGtkhtml2SubmitData *wdata = g_new (WebGtkhtml2SubmitData, 1);
		wdata->url = g_strdup_printf ("%s?%s", method, encoding);
		wdata->data = data;
		g_idle_add (web_gtkhtml2_submit_idle, wdata);
	}
}

static void
web_gtkhtml2_title_changed_cb (HtmlDocument *document, const gchar *new_title,
			       WebData *data)
{
	web_title_change (data, new_title);
}

static void
web_gtkhtml2_link_clicked_cb (HtmlDocument *document, const gchar *url,
			      WebData *data)
{
	web_go (data, url, FALSE);
}

static gboolean
web_gtkhtml2_motion_tooltip_cb (GtkWidget *widget, GdkEventMotion *event,
				GtkWidget *popup)
{
	g_signal_handlers_disconnect_by_func (widget, 
		web_gtkhtml2_motion_tooltip_cb, popup);
	gtk_widget_destroy (popup);
	return FALSE;
}

static gboolean
web_gtkhtml2_title_tooltip_cb (gpointer user_data)
{
	WebGtkhtml2PageData *data = user_data;
	
	if (!data->document->hover_node)
		return FALSE;
	
	if (dom_Node_hasAttributes (data->document->hover_node)) {
		int i;
		DomNamedNodeMap *map =
			dom_Node__get_attributes (data->document->hover_node);
		DomNode *node;
		for (i = 0, node = dom_NamedNodeMap__get_item (map, i);
		     i < dom_NamedNodeMap__get_length (map);
		     i++, node = dom_NamedNodeMap__get_item (map, i)) {
			if (strcasecmp ("title", dom_Attr__get_name (node))
			    == 0) {
				GtkWidget *popup =
					gtk_window_new (GTK_WINDOW_POPUP);
				GtkWidget *label =
					gtk_label_new ((const gchar *)
						dom_Attr__get_value (node));
				gint x, y;
				
				gtk_window_set_position (GTK_WINDOW (popup),
					GTK_WIN_POS_MOUSE);
				gtk_container_add (GTK_CONTAINER (popup),
					label);
				gtk_widget_show_all (popup);
				
				g_signal_connect (G_OBJECT (data->view),
					"motion-notify-event", G_CALLBACK (
						web_gtkhtml2_motion_tooltip_cb),
					popup);

				break;
			}
		}
	}
	
	return FALSE;
}

static gboolean
web_gtkhtml2_dom_mouse_over_cb (HtmlDocument *document, DomEvent *event,
				WebGtkhtml2PageData *data)
{
	g_timeout_add (1000, web_gtkhtml2_title_tooltip_cb, data);
	return FALSE;
}

static gboolean web_gtkhtml2_dom_mouse_out_cb (HtmlDocument *document,
						DomEvent *event,
						WebGtkhtml2PageData *data)
{
	g_source_remove_by_user_data (data);
	return FALSE;
}

static void
web_gtkhtml2_node_finished_cb (HtmlDocument *doc, DomNode *node, WebGtkhtml2PageData *data)
{
/*	g_debug ("(Node finished: %s (%s))",
		node->xmlnode->name, node->xmlnode->content);*/
	if (strcmp (node->xmlnode->name, "script") == 0)
		web_gtkhtml2_js_run (data->parent, data, node);
}

static GtkWidget *
web_gtkhtml2_new (gpointer backend_data_p, gpointer *page_data_pointer,
		  WebData *data)
{
	GtkWidget *scroll;
	WebGtkhtml2PageData *page_data;
	WebGtkhtml2Data *backend_data = backend_data_p;
	
	*page_data_pointer = g_new0 (WebGtkhtml2PageData, 1);
	page_data = *page_data_pointer;
	page_data->parent = backend_data;
	page_data->document = html_document_new ();
	page_data->view = HTML_VIEW (html_view_new ());
	page_data->data = data;
	
	html_view_set_document (page_data->view, page_data->document);
	
	/* Note: Need to set a blank page, or setting page magnification won't
	 * work... Could this be considered a bug in gtkhtml2?
	 */
	if (html_document_open_stream (page_data->document, "text/html")) {
		html_document_write_stream (page_data->document, BLANK_PAGE,
			strlen (BLANK_PAGE));
		html_document_close_stream (page_data->document);
	}
	
	/* Connect signals */
	g_signal_connect (G_OBJECT (page_data->document), "node_finished",
			  G_CALLBACK (web_gtkhtml2_node_finished_cb), page_data);
/*	g_signal_connect (G_OBJECT (page_data->document), "dom_mouse_over",
			  G_CALLBACK (web_gtkhtml2_dom_mouse_over_cb),
			  page_data);
	g_signal_connect (G_OBJECT (page_data->document), "dom_mouse_out",
			  G_CALLBACK (web_gtkhtml2_dom_mouse_out_cb),
			  page_data);*/
	g_signal_connect (G_OBJECT (page_data->document), "request_url",
			  G_CALLBACK (web_gtkhtml2_request_url_cb), data);
	g_signal_connect (G_OBJECT (page_data->document), "set_base",
			  G_CALLBACK (web_gtkhtml2_set_base_cb), data);
	g_signal_connect (G_OBJECT (page_data->document), "link_clicked",
			  G_CALLBACK (web_gtkhtml2_link_clicked_cb), data);
	g_signal_connect (G_OBJECT (page_data->document), "title_changed",
			  G_CALLBACK (web_gtkhtml2_title_changed_cb), data);
	g_signal_connect (G_OBJECT (page_data->document), "submit",
			  G_CALLBACK (web_gtkhtml2_submit_cb), data);

	gtk_widget_show_all (page_data->view);
	
	return page_data->view;
}

static void
web_gtkhtml2_destroy (gpointer backend_data, gpointer page_data)
{
	WebGtkhtml2PageData *data = page_data;
	g_free (data);
}

typedef struct {
	const gchar *style;
	const gchar *media;
	CssStylesheet *sheet;
} WebGtkhtml2Css;

void
web_gtkhtml2_write (gpointer backend_data, gpointer page_data,
		    WebRequest *request, gchar *buffer, gint size)
{
	WebGtkhtml2PageData *data = page_data;
	gchar *c;
	gboolean first_time = FALSE;
	
	switch (request->type) {
		case WEB_LINK :
			if (!request->data) {
				first_time =
					!data->document->dom_document;
				html_document_open_stream (
					data->document, "text/html");
				request->data = data->document;
				if (first_time) {
					GSList *l;
					
					for (l = data->sheets; l; l = l->next) {
						WebGtkhtml2Css *css = l->data;
						html_document_add_stylesheet (
							data->document,
							css->sheet);
					}

					data->page_request =
						web_request_copy (request);
				}
			}
			/* Break stream at '>' for JavaScript */
			while ((c = g_utf8_strchr (buffer, size, '>'))) {
				gboolean delay_write = FALSE;
				c++;

				if (!data->stalling) {
					/* Make sure injected html comes before
					 * buffered html
					 */
					if (data->inject)
						delay_write = TRUE;
					else
						html_document_write_stream (
							data->document, buffer,
							c - buffer);
				} else {
/*					g_debug ("Buffering (%d)...",
						data->buffer_size);*/
					data->buffer = g_realloc (
						data->buffer,
						data->buffer_size +
							(c - buffer));
					memcpy ((data->buffer +
						data->buffer_size), buffer,
						c - buffer);
					data->buffer_size += (c - buffer);
				}
				if (!delay_write) {
					size -= c - buffer;
					buffer = c;
				}
				
				if (data->inject) {
					html_document_write_stream (
						data->document, data->inject,
						strlen (data->inject));
					g_free (data->inject);
					data->inject = NULL;
				}
				if (first_time) {
					/* Init JS after dom_document is
					 * created.
					 */
					web_gtkhtml2_js_init (
						backend_data, page_data);
					first_time = FALSE;
				}
			}
			if (size > 0) {
				if (!data->stalling)
					html_document_write_stream (
						data->document, buffer, size);
				else {
/*					g_debug ("Buffering...");*/
					data->buffer = g_realloc (
						data->buffer,
						data->buffer_size + size);
					memcpy (data->buffer +
						data->buffer_size,
						buffer, size);
					data->buffer_size += size;
				}
			}
			
			if (data->stalling_close && !data->stalling) {
				data->stalling_close = FALSE;
				g_debug ("Closing after buffer");
				web_gtkhtml2_close (backend_data, page_data,
					request);
			}
			break;
		case WEB_DATA :
			html_stream_write ((HtmlStream *)request->data,
				buffer, size);
			break;
	}
}

static void
web_gtkhtml2_clear (gpointer backend_data, gpointer page_data)
{
	WebGtkhtml2PageData *data = page_data;
	GList *r;
	GSList *s;
	
	for (r = data->ext_js; r; r = r->next)
		web_request_close ((WebRequest *)r->data);
	g_list_free (data->ext_js);
	data->ext_js = NULL;

	/* Note: Doing html_document_clear destroys the stylesheets, so
	 * remove them first so as not to have to re-parse them
	 */
	for (s = data->sheets; s; s = s->next) {
		WebGtkhtml2Css *css = s->data;
		
		if (css->sheet)
			html_document_remove_stylesheet (
				data->document, css->sheet);
	}
	
	web_gtkhtml2_js_clear (backend_data, page_data);
	html_document_clear (data->document);
}

void
web_gtkhtml2_close (gpointer backend_data, gpointer page_data,
		    WebRequest *request)
{
	WebGtkhtml2PageData *data = page_data;

    	if (request->data) {
		switch (request->type) {
		    case WEB_LINK :
/*			g_debug ("Closing document stream (%s)",
				request->url);*/
			if (!data->stalling) {
				GSList *s;
				html_document_close_stream (data->document);
				web_request_free (data->page_request);
				web_gtkhtml2_js_init_events (backend_data,
					page_data);
				for (s = data->scripts; s; s = s->next) {
					gchar *script = (gchar *)s->data;
					web_gtkhtml2_js_parse (backend_data,
						page_data, script,
						strlen (script));
				}
/*				web_gtkhtml2_print_dom (
					data->document->dom_document, 0);*/
			} else {
				g_debug ("Buffered close");
				data->stalling_close = TRUE;
				return;
			}
			break;
		    case WEB_DATA :
/*			g_debug ("Closing stream (%s)", request->url);*/
			html_stream_set_cancel_func (
				(HtmlStream *)request->data,
				web_gtkhtml2_stream_cancel_cb, NULL);
			html_stream_close ((HtmlStream *)request->data);
			break;
		    default :
			g_warning ("Unknown request type (%d, %s)",
				request->type, request->url);
			break;
		}
		request->data = NULL;
	}
}

static gdouble
web_gtkhtml2_get_zoom (gpointer backend_data, gpointer page_data)
{
	WebGtkhtml2PageData *data = page_data;
	return html_view_get_magnification (data->view);
}

static void
web_gtkhtml2_set_zoom (gpointer backend_data, gpointer page_data, gdouble zoom)
{
	WebGtkhtml2PageData *data = page_data;
	html_view_set_magnification (data->view, zoom);
}

static gpointer
web_gtkhtml2_add_style (gpointer backend_data, gpointer page_data,
			const gchar *style, const gchar *media)
{
	WebGtkhtml2PageData *data = page_data;
	
/*	g_debug ("Adding user CSS");*/

	WebGtkhtml2Css *css = g_new0 (WebGtkhtml2Css, 1);
	css->style = g_strdup (style);
	css->media = g_strdup (media);
	css->sheet = css_parser_parse_stylesheet (css->style,
		strlen (css->style), NULL, css->media);
	data->sheets = g_slist_prepend (
		data->sheets, css);

	if (data->document->dom_document)
		html_document_add_stylesheet (data->document, css->sheet);

	return g_slist_find (data->sheets, css);
}

static void
web_gtkhtml2_remove_style (gpointer backend_data, gpointer page_data,
			   gpointer style)
{
	WebGtkhtml2PageData *data = page_data;
	GSList *link = style;

	if (link) {
		WebGtkhtml2Css *css = link->data;
		if (css->sheet) {
			if (data->document->dom_document)
				html_document_remove_stylesheet (
					data->document, css->sheet);
			css_stylesheet_destroy (css->sheet);
		}
		g_free (css);
		data->sheets = g_slist_delete_link (data->sheets, link);
	}
}

static gpointer
web_gtkhtml2_add_script (gpointer backend_data, gpointer page_data,
			 gchar *script)
{
	WebGtkhtml2PageData *data = page_data;
	
	script = g_strdup (script);
	data->scripts = g_slist_prepend (data->scripts, script);
	
	return g_slist_find (data->scripts, script);
}

static void
web_gtkhtml2_remove_script (gpointer backend_data, gpointer page_data,
			    gpointer script)
{
	WebGtkhtml2PageData *data = page_data;
	GSList *link = script;
	
	if (script) {
		gchar *script_string = link->data;
		g_free (script_string);
		data->scripts = g_slist_delete_link (data->scripts, link);
	}
}

static void
web_gtkhtml2_set_media (gpointer backend_data, gpointer page_data,
			const gchar *media)
{
	WebGtkhtml2PageData *data = page_data;
	html_document_set_media_type (data->document, media);
}

static WebBackEnd
gtkhtml2_backend = {
	WEB_API_VERSION,
	"GtkHTML2",
	
	web_gtkhtml2_init,
	web_gtkhtml2_deinit,
	web_gtkhtml2_new,
	web_gtkhtml2_destroy,
	web_gtkhtml2_write,
	web_gtkhtml2_clear,
	web_gtkhtml2_close,
	web_gtkhtml2_get_zoom,
	web_gtkhtml2_set_zoom,
	web_gtkhtml2_add_style,
	web_gtkhtml2_remove_style,
	web_gtkhtml2_add_script,
	web_gtkhtml2_remove_script,
	web_gtkhtml2_set_media
};

DECLARE_WEB_BACKEND(gtkhtml2_backend);