1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ |
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2 | /* |
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3 | * Copyright (C) 2001-2002 Mikael Hallendal <micke@codefactory.se> |
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4 | * |
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5 | * This program is free software; you can redistribute it and/or |
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6 | * modify it under the terms of the GNU General Public License as |
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7 | * published by the Free Software Foundation; either version 2 of the |
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8 | * License, or (at your option) any later version. |
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9 | * |
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10 | * This program is distributed in the hope that it will be useful, |
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 | * General Public License for more details. |
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14 | * |
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15 | * You should have received a copy of the GNU General Public |
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16 | * License along with this program; if not, write to the |
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17 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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18 | * Boston, MA 02111-1307, USA. |
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19 | * |
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20 | * Author: Mikael Hallendal <micke@codefactory.se> |
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21 | */ |
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22 | |
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23 | #ifdef HAVE_CONFIG_H |
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24 | #include <config.h> |
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25 | #endif |
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26 | |
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27 | #include <libgnomevfs/gnome-vfs.h> |
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28 | #include <libgnomevfs/gnome-vfs-mime-utils.h> |
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29 | #include <libgnome/gnome-i18n.h> |
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30 | #include <libgtkhtml/gtkhtml.h> |
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31 | |
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32 | #include <string.h> |
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33 | #include <stdio.h> |
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34 | |
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35 | #include "yelp-util.h" |
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36 | #include "yelp-marshal.h" |
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37 | #include "yelp-error.h" |
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38 | #include "yelp-uri.h" |
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39 | #include "yelp-html.h" |
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40 | |
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41 | #define d(x) |
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42 | |
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43 | struct _YelpHtmlPriv { |
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44 | HtmlView *view; |
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45 | |
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46 | HtmlDocument *doc; |
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47 | YelpURI *base_uri; |
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48 | }; |
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49 | |
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50 | |
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51 | static void html_init (YelpHtml *html); |
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52 | static void html_class_init (YelpHtmlClass *klass); |
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53 | |
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54 | static void html_url_requested_cb (HtmlDocument *doc, |
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55 | const gchar *uri, |
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56 | HtmlStream *stream, |
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57 | gpointer data); |
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58 | static void html_cancel_stream (HtmlStream *stream, |
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59 | gpointer user_data, |
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60 | gpointer cancel_data); |
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61 | |
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62 | static void html_link_clicked_cb (HtmlDocument *doc, |
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63 | const gchar *url, |
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64 | YelpHtml *html); |
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65 | static void html_title_changed_cb (HtmlDocument *doc, |
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66 | const gchar *new_title, |
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67 | YelpHtml *html); |
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68 | |
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69 | |
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70 | #define BUFFER_SIZE 16384 |
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71 | |
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72 | enum { |
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73 | URI_SELECTED, |
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74 | TITLE_CHANGED, |
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75 | LAST_SIGNAL |
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76 | }; |
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77 | |
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78 | static gint signals[LAST_SIGNAL] = { 0 }; |
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79 | |
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80 | GType |
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81 | yelp_html_get_type (void) |
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82 | { |
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83 | static GType view_type = 0; |
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84 | |
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85 | if (!view_type) |
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86 | { |
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87 | static const GTypeInfo view_info = |
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88 | { |
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89 | sizeof (YelpHtmlClass), |
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90 | NULL, |
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91 | NULL, |
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92 | (GClassInitFunc) html_class_init, |
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93 | NULL, |
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94 | NULL, |
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95 | sizeof (YelpHtml), |
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96 | 0, |
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97 | (GInstanceInitFunc) html_init, |
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98 | }; |
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99 | |
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100 | view_type = g_type_register_static (G_TYPE_OBJECT, |
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101 | "YelpHtml", |
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102 | &view_info, 0); |
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103 | } |
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104 | |
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105 | return view_type; |
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106 | } |
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107 | |
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108 | static void |
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109 | html_init (YelpHtml *html) |
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110 | { |
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111 | YelpHtmlPriv *priv; |
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112 | |
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113 | priv = g_new0 (YelpHtmlPriv, 1); |
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114 | |
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115 | priv->view = HTML_VIEW (html_view_new ()); |
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116 | priv->doc = html_document_new (); |
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117 | priv->base_uri = NULL; |
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118 | |
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119 | html_view_set_document (HTML_VIEW (priv->view), priv->doc); |
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120 | |
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121 | g_signal_connect (G_OBJECT (priv->doc), "link_clicked", |
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122 | G_CALLBACK (html_link_clicked_cb), html); |
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123 | |
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124 | g_signal_connect (G_OBJECT (priv->doc), "request_url", |
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125 | G_CALLBACK (html_url_requested_cb), html); |
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126 | |
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127 | g_signal_connect (G_OBJECT (priv->doc), "title_changed", |
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128 | G_CALLBACK (html_title_changed_cb), html); |
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129 | |
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130 | html->priv = priv; |
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131 | } |
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132 | |
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133 | static void |
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134 | html_class_init (YelpHtmlClass *klass) |
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135 | { |
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136 | signals[URI_SELECTED] = |
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137 | g_signal_new ("uri_selected", |
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138 | G_TYPE_FROM_CLASS (klass), |
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139 | G_SIGNAL_RUN_LAST, |
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140 | G_STRUCT_OFFSET (YelpHtmlClass, |
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141 | uri_selected), |
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142 | NULL, NULL, |
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143 | yelp_marshal_VOID__POINTER_BOOLEAN, |
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144 | G_TYPE_NONE, |
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145 | 2, G_TYPE_POINTER, G_TYPE_BOOLEAN); |
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146 | |
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147 | signals[TITLE_CHANGED] = |
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148 | g_signal_new ("title_changed", |
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149 | G_TYPE_FROM_CLASS (klass), |
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150 | G_SIGNAL_RUN_LAST, |
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151 | G_STRUCT_OFFSET (YelpHtmlClass, |
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152 | title_changed), |
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153 | NULL, NULL, |
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154 | yelp_marshal_VOID__STRING, |
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155 | G_TYPE_NONE, |
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156 | 1, G_TYPE_STRING); |
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157 | } |
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158 | |
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159 | static void |
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160 | html_url_requested_cb (HtmlDocument *doc, |
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161 | const gchar *url, |
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162 | HtmlStream *stream, |
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163 | gpointer data) |
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164 | { |
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165 | YelpHtmlPriv *priv; |
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166 | YelpHtml *html; |
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167 | GnomeVFSHandle *handle; |
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168 | GnomeVFSResult result; |
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169 | gchar buffer[BUFFER_SIZE]; |
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170 | GnomeVFSFileSize read_len; |
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171 | gchar *absolute_url; |
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172 | |
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173 | html = YELP_HTML (data); |
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174 | priv = html->priv; |
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175 | |
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176 | html_stream_set_cancel_func (stream, html_cancel_stream, html); |
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177 | |
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178 | d(g_print ("URL REQUESTED: %s\n", url)); |
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179 | |
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180 | absolute_url = yelp_util_resolve_relative_url (yelp_uri_get_path (priv->base_uri), url); |
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181 | |
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182 | result = gnome_vfs_open (&handle, absolute_url, GNOME_VFS_OPEN_READ); |
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183 | |
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184 | if (result != GNOME_VFS_OK) { |
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185 | g_warning ("Failed to open: %s", absolute_url); |
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186 | g_free (absolute_url); |
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187 | |
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188 | return; |
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189 | } |
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190 | |
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191 | g_free (absolute_url); |
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192 | |
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193 | while (gnome_vfs_read (handle, buffer, BUFFER_SIZE, &read_len) == |
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194 | GNOME_VFS_OK) { |
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195 | html_stream_write (stream, buffer, read_len); |
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196 | } |
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197 | |
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198 | gnome_vfs_close (handle); |
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199 | } |
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200 | |
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201 | static void |
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202 | html_cancel_stream (HtmlStream *stream, |
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203 | gpointer user_data, |
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204 | gpointer cancel_data) |
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205 | { |
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206 | d(g_print ("CANCEL!!\n")); |
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207 | |
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208 | /* Not sure what to do here */ |
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209 | } |
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210 | |
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211 | static void |
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212 | html_link_clicked_cb (HtmlDocument *doc, const gchar *url, YelpHtml *html) |
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213 | { |
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214 | YelpHtmlPriv *priv; |
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215 | gboolean handled; |
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216 | YelpURI *uri; |
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217 | |
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218 | g_return_if_fail (HTML_IS_DOCUMENT (doc)); |
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219 | g_return_if_fail (url != NULL); |
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220 | g_return_if_fail (YELP_IS_HTML (html)); |
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221 | |
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222 | priv = html->priv; |
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223 | handled = FALSE; |
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224 | |
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225 | d(g_print ("Link clicked: %s\n", url)); |
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226 | |
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227 | uri = yelp_uri_get_relative (priv->base_uri, url); |
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228 | |
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229 | d(g_print ("That would be: %s\n", yelp_uri_to_string (uri))); |
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230 | |
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231 | /* If this is a relative reference. Shortcut reload. */ |
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232 | if (yelp_uri_equal_path (uri, priv->base_uri) && |
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233 | yelp_uri_get_section (uri)) { |
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234 | if (yelp_uri_get_type (uri) == YELP_URI_TYPE_HTML || |
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235 | yelp_uri_get_type (uri) == YELP_URI_TYPE_MAN) { |
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236 | html_view_jump_to_anchor (HTML_VIEW (html->priv->view), |
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237 | yelp_uri_get_section (uri)); |
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238 | handled = TRUE; |
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239 | } |
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240 | } |
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241 | |
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242 | g_signal_emit (html, signals[URI_SELECTED], 0, uri, handled); |
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243 | |
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244 | yelp_uri_unref (uri); |
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245 | } |
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246 | |
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247 | static void |
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248 | html_title_changed_cb (HtmlDocument *doc, |
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249 | const gchar *new_title, |
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250 | YelpHtml *html) |
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251 | { |
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252 | g_return_if_fail (HTML_IS_DOCUMENT (doc)); |
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253 | g_return_if_fail (new_title != NULL); |
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254 | |
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255 | g_signal_emit (html, signals[TITLE_CHANGED], 0, new_title); |
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256 | } |
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257 | |
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258 | YelpHtml * |
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259 | yelp_html_new (void) |
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260 | { |
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261 | YelpHtml *html; |
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262 | |
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263 | d(puts(G_GNUC_FUNCTION)); |
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264 | |
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265 | html = g_object_new (YELP_TYPE_HTML, NULL); |
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266 | |
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267 | yelp_html_clear (html); |
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268 | |
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269 | { |
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270 | gchar *text = "<html><body></body></html>"; |
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271 | |
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272 | yelp_html_write (html, text, -1); |
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273 | } |
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274 | |
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275 | yelp_html_close (html); |
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276 | |
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277 | return html; |
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278 | } |
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279 | |
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280 | void |
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281 | yelp_html_set_base_uri (YelpHtml *html, YelpURI *uri) |
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282 | { |
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283 | YelpHtmlPriv *priv; |
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284 | |
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285 | g_return_if_fail (YELP_IS_HTML (html)); |
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286 | |
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287 | priv = html->priv; |
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288 | |
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289 | if (priv->base_uri) { |
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290 | yelp_uri_unref (priv->base_uri); |
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291 | } |
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292 | |
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293 | priv->base_uri = yelp_uri_ref (uri); |
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294 | } |
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295 | |
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296 | void |
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297 | yelp_html_clear (YelpHtml *html) |
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298 | { |
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299 | YelpHtmlPriv *priv; |
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300 | |
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301 | g_return_if_fail (YELP_IS_HTML (html)); |
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302 | |
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303 | priv = html->priv; |
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304 | |
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305 | html_document_clear (priv->doc); |
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306 | html_document_open_stream (priv->doc, "text/html"); |
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307 | html_stream_set_cancel_func (priv->doc->current_stream, |
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308 | html_cancel_stream, |
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309 | html); |
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310 | } |
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311 | |
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312 | void |
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313 | yelp_html_write (YelpHtml *html, const gchar *data, gint len) |
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314 | { |
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315 | YelpHtmlPriv *priv; |
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316 | |
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317 | g_return_if_fail (YELP_IS_HTML (html)); |
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318 | |
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319 | priv = html->priv; |
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320 | |
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321 | if (len == -1) { |
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322 | len = strlen (data); |
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323 | } |
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324 | |
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325 | if (len <= 0) { |
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326 | return; |
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327 | } |
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328 | |
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329 | html_document_write_stream (priv->doc, data, len); |
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330 | } |
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331 | |
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332 | void |
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333 | yelp_html_printf (YelpHtml *html, char *format, ...) |
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334 | { |
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335 | va_list args; |
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336 | gchar *string; |
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337 | |
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338 | g_return_if_fail (format != NULL); |
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339 | |
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340 | va_start (args, format); |
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341 | string = g_strdup_vprintf (format, args); |
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342 | va_end (args); |
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343 | |
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344 | yelp_html_write (html, string, -1); |
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345 | |
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346 | g_free (string); |
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347 | } |
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348 | |
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349 | void |
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350 | yelp_html_close (YelpHtml *html) |
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351 | { |
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352 | YelpHtmlPriv *priv; |
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353 | |
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354 | g_return_if_fail (YELP_IS_HTML (html)); |
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355 | |
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356 | priv = html->priv; |
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357 | |
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358 | html_document_close_stream (priv->doc); |
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359 | |
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360 | gtk_adjustment_set_value (gtk_layout_get_vadjustment (GTK_LAYOUT (priv->view)), |
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361 | 0); |
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362 | } |
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363 | |
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364 | GtkWidget * |
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365 | yelp_html_get_widget (YelpHtml *html) |
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366 | { |
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367 | g_return_val_if_fail (YELP_IS_HTML (html), NULL); |
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368 | |
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369 | return GTK_WIDGET (html->priv->view); |
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370 | } |
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