Desktop
/* $Id: ghtml-gtkhtml.c,v 1.6 2009/02/22 21:24:37 khorben Exp $ */
/* Copyright (c) 2009 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Surfer */
/* Surfer is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* Surfer is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* Surfer; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
* Suite 330, Boston, MA 02111-1307 USA */
/* TODO:
* - fix URL generation for relative path
* - progressive file load
* - update the URL and title of the main window
* - implement selection */
#include <stdlib.h>
#include <string.h>
#include <libgtkhtml/gtkhtml.h>
#include <libgtkhtml/view/htmlselection.h>
#define GNET_EXPERIMENTAL
#include <gnet.h>
#include "ghtml.h"
/* ghtml */
/* private */
typedef struct _GHtml
{
/* FIXME implement history */
/* html widget */
gchar * html_base;
HtmlDocument * html_document;
gchar * html_title;
GtkWidget * html_view;
} GHtml;
/* prototypes */
static gboolean _ghtml_document_load(GHtml * ghtml, gchar const * base,
gchar const * url);
static gchar * _ghtml_make_url(gchar const * base, gchar const * url);
/* callbacks */
static void _on_link_clicked(HtmlDocument * document, const gchar * url);
static void _on_request_url(HtmlDocument * document, const gchar * url,
HtmlStream * stream);
static void _on_set_base(HtmlDocument * document, const gchar * url);
static void _on_title_changed(HtmlDocument * document, const gchar * title);
/* public */
/* functions */
GtkWidget * ghtml_new(Surfer * surfer)
{
GHtml * ghtml;
GtkWidget * widget;
if((ghtml = malloc(sizeof(*ghtml))) == NULL)
return NULL;
ghtml->html_base = NULL;
ghtml->html_view = html_view_new();
ghtml->html_document = html_document_new();
ghtml->html_title = NULL;
g_object_set_data(G_OBJECT(ghtml->html_document), "ghtml", ghtml);
g_signal_connect(G_OBJECT(ghtml->html_document), "link-clicked",
G_CALLBACK(_on_link_clicked), NULL);
g_signal_connect(G_OBJECT(ghtml->html_document), "request-url",
G_CALLBACK(_on_request_url), NULL);
g_signal_connect(G_OBJECT(ghtml->html_document), "set-base", G_CALLBACK(
_on_set_base), NULL);
g_signal_connect(G_OBJECT(ghtml->html_document), "title-changed",
G_CALLBACK(_on_title_changed), NULL);
html_view_set_document(HTML_VIEW(ghtml->html_view),
ghtml->html_document);
widget = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(widget),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
g_object_set_data(G_OBJECT(widget), "ghtml", ghtml);
gtk_container_add(GTK_CONTAINER(widget), ghtml->html_view);
return widget;
}
/* accessors */
gboolean ghtml_can_go_back(GtkWidget * ghtml)
{
/* FIXME implement */
return FALSE;
}
gboolean ghtml_can_go_forward(GtkWidget * ghtml)
{
/* FIXME implement */
return FALSE;
}
/* ghtml_get_link_message */
char const * ghtml_get_link_message(GtkWidget * ghtml)
{
/* FIXME implement */
return NULL;
}
char const * ghtml_get_location(GtkWidget * ghtml)
{
/* FIXME implement */
return NULL;
}
char const * ghtml_get_title(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
return ghtml->html_title;
}
/* useful */
gboolean ghtml_go_back(GtkWidget * ghtml)
{
/* FIXME implement */
return FALSE;
}
gboolean ghtml_go_forward(GtkWidget * ghtml)
{
/* FIXME implement */
return FALSE;
}
/* ghtml_load_url */
void ghtml_load_url(GtkWidget * widget, char const * url)
{
GHtml * ghtml;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(\"%s\")\n", __func__, url);
#endif
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
if(_ghtml_document_load(ghtml, NULL, url) != TRUE)
return;
/* FIXME with current code another base may have been set in between */
g_free(ghtml->html_base);
ghtml->html_base = g_strdup(url);
}
/* ghtml_refresh */
void ghtml_refresh(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
if(ghtml->html_base == NULL)
return;
/* FIXME should differentiate URL and base */
_ghtml_document_load(ghtml, NULL, ghtml->html_base);
}
/* ghtml_reload */
void ghtml_reload(GtkWidget * ghtml)
{
ghtml_refresh(ghtml);
}
/* ghtml_select_all */
void ghtml_select_all(GtkWidget * ghtml)
{
/* FIXME implement */
}
/* ghtml_stop */
void ghtml_stop(GtkWidget * ghtml)
{
/* FIXME implement */
}
/* ghtml_unselect_all */
void ghtml_unselect_all(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
html_selection_clear(HTML_VIEW(ghtml->html_view));
}
/* ghtml_zoom_in */
void ghtml_zoom_in(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
html_view_zoom_in(HTML_VIEW(ghtml->html_view));
}
/* ghtml_zoom_out */
void ghtml_zoom_out(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
html_view_zoom_out(HTML_VIEW(ghtml->html_view));
}
/* ghtml_zoom_reset */
void ghtml_zoom_reset(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
html_view_zoom_reset(HTML_VIEW(ghtml->html_view));
}
/* private */
/* functions */
/* ghtml_document_load */
static gboolean _load_write_stream(HtmlStream * stream, gchar const * base,
gchar const * url);
static gboolean _ghtml_document_load(GHtml * ghtml, gchar const * base,
gchar const * url)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(\"%s\", \"%s\")\n", __func__, base, url);
#endif
html_document_open_stream(ghtml->html_document, "text/html");
if(_load_write_stream(ghtml->html_document->current_stream, base, url)
!= TRUE)
{
html_document_write_stream(ghtml->html_document, "500", 3);
html_document_close_stream(ghtml->html_document);
return FALSE; /* FIXME report error */
}
html_document_close_stream(ghtml->html_document);
return TRUE;
}
static gboolean _load_write_stream(HtmlStream * stream, gchar const * base,
gchar const * url)
{
gchar * u;
gchar * buf = NULL;
gsize len = 0;
guint response;
gboolean error;
if((u = _ghtml_make_url(base, url)) == NULL)
return FALSE;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() url=\"%s\"\n", __func__, u);
#endif
if(u[0] == '/')
error = g_file_get_contents(u, &buf, &len, NULL) == FALSE;
else if(strncmp("file:/", u, 6) == 0)
error = g_file_get_contents(&u[5], &buf, &len, NULL) == FALSE;
/* XXX assuming the rest is http */
else
error = gnet_http_get(u, &buf, &len, &response) != TRUE;
g_free(u);
if(error)
return FALSE; /* FIXME report error */
html_stream_write(stream, buf, len);
return TRUE;
}
/* ghtml_make_url */
static gchar * _ghtml_make_url(gchar const * base, gchar const * url)
{
if(url == NULL)
return NULL;
/* XXX use a more generic protocol finder (strchr(':')) */
if(strncmp("http://", url, 7) == 0)
return g_strdup(url);
if(strncmp("ftp://", url, 6) == 0)
return g_strdup(url);
if(base != NULL)
{
if(url[0] == '/')
/* FIXME construct from / */
return g_strdup_printf("%s%s", base, url);
/* FIXME construct from last / */
return g_strdup_printf("%s/%s", base, url);
}
/* base is NULL, url is not NULL */
if(strncmp("ftp", url, 3) == 0)
return g_strdup_printf("%s%s", "ftp://", url);
if(url[0] == '/')
return g_strdup(url);
return g_strdup_printf("%s%s", "http://", url);
}
/* callbacks */
static void _on_link_clicked(HtmlDocument * document, const gchar * url)
{
GHtml * ghtml;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(\"%s\")\n", __func__, url);
#endif
ghtml = g_object_get_data(G_OBJECT(document), "ghtml");
_ghtml_document_load(ghtml, ghtml->html_base, url);
}
static void _on_request_url(HtmlDocument * document, const gchar * url,
HtmlStream * stream)
{
GHtml * ghtml;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(\"%s\")\n", __func__, url);
#endif
ghtml = g_object_get_data(G_OBJECT(document), "ghtml");
_load_write_stream(stream, ghtml->html_base, url);
html_stream_close(stream);
}
static void _on_set_base(HtmlDocument * document, const gchar * url)
{
GHtml * ghtml;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(\"%s\")\n", __func__, url);
#endif
ghtml = g_object_get_data(G_OBJECT(document), "ghtml");
g_free(ghtml->html_base);
ghtml->html_base = g_strdup(url);
}
static void _on_title_changed(HtmlDocument * document, const gchar * title)
{
GHtml * ghtml;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(\"%s\")\n", __func__, title);
#endif
ghtml = g_object_get_data(G_OBJECT(document), "ghtml");
g_free(ghtml->html_title);
ghtml->html_title = g_strdup(title);
/* FIXME emit signal */
}