1 /* Fo
2 * fo-property-keep-with-previous-within-page.c: 'keep-with-previous-within-page' property
3 *
4 * Copyright (C) 2001 Sun Microsystems
5 * Copyright (C) 2007 Menteith Consulting Ltd
6 *
7 * See COPYING for the status of this software.
8 */
9
10 #include <string.h>
11 #include "fo-utils.h"
12 #include "fo-context.h"
13 #include "datatype/fo-datatype.h"
14 #include "property/fo-property-private.h"
15 #include "property/fo-property-font-size.h"
16 #include "property/fo-property-keep-with-previous-within-page.h"
17 #include "property/fo-property-util.h"
18
19 /* keep-with-previous-within-page */
20 /* Inherited: FALSE */
21 /* Shorthand: FALSE */
22 /* <keep> | inherit */
23 /* Initial value: .within-line=auto, .within-column=auto, .within-page=auto */
24
25 struct _FoPropertyKeepWithPreviousWithinPage
26 {
27 FoProperty parent_instance;
28 };
29
30 struct _FoPropertyKeepWithPreviousWithinPageClass
31 {
32 FoPropertyClass parent_class;
33 };
34
35 static void fo_property_keep_with_previous_within_page_init (FoPropertyKeepWithPreviousWithinPage *property_keep_with_previous_within_page);
36 static void fo_property_keep_with_previous_within_page_class_init (FoPropertyKeepWithPreviousWithinPageClass *klass);
37 static void fo_property_keep_with_previous_within_page_finalize (GObject *object);
38
39 static FoDatatype* fo_property_keep_with_previous_within_page_validate (FoDatatype *datatype,
40 FoContext *context,
41 GError **error);
42
43 static const gchar class_name[] = "keep-with-previous-within-page";
44 static gpointer parent_class;
45
46 /**
47 * fo_property_keep_with_previous_within_page_get_type:
48 *
49 * Register the #FoPropertyKeepWithPreviousWithinPage type if not already registered and
50 * return its #GType value.
51 *
52 * Return value: #GType of #FoPropertyKeepWithPreviousWithinPage.
53 **/
54 GType
fo_property_keep_with_previous_within_page_get_type(void)55 fo_property_keep_with_previous_within_page_get_type (void)
56 {
57 static GType object_type = 0;
58
59 if (!object_type)
60 {
61 static const GTypeInfo object_info =
62 {
63 sizeof (FoPropertyKeepWithPreviousWithinPageClass),
64 NULL, /* base_init */
65 NULL, /* base_finalize */
66 (GClassInitFunc) fo_property_keep_with_previous_within_page_class_init,
67 NULL, /* class_finalize */
68 NULL, /* class_data */
69 sizeof (FoPropertyKeepWithPreviousWithinPage),
70 0, /* n_preallocs */
71 (GInstanceInitFunc) fo_property_keep_with_previous_within_page_init,
72 NULL /* value_table */
73 };
74
75 object_type = g_type_register_static (FO_TYPE_PROPERTY,
76 class_name,
77 &object_info, 0);
78 }
79
80 return object_type;
81 }
82
83 /**
84 * fo_property_keep_with_previous_within_page_init:
85 * @keep_with_previous_within_page: #FoPropertyKeepWithPreviousWithinPage object to initialise.
86 *
87 * Implements #GInstanceInitFunc for #FoPropertyKeepWithPreviousWithinPage.
88 **/
89 void
fo_property_keep_with_previous_within_page_init(FoPropertyKeepWithPreviousWithinPage * keep_with_previous_within_page)90 fo_property_keep_with_previous_within_page_init (FoPropertyKeepWithPreviousWithinPage *keep_with_previous_within_page)
91 {
92 FO_PROPERTY (keep_with_previous_within_page)->value =
93 g_object_ref (fo_enum_factory_get_enum_by_value (FO_ENUM_ENUM_AUTO));
94 }
95
96 /**
97 * fo_property_keep_with_previous_within_page_class_init:
98 * @klass: #FoPropertyKeepWithPreviousWithinPageClass object to initialise.
99 *
100 * Implements #GClassInitFunc for #FoPropertyKeepWithPreviousWithinPageClass.
101 **/
102 void
fo_property_keep_with_previous_within_page_class_init(FoPropertyKeepWithPreviousWithinPageClass * klass)103 fo_property_keep_with_previous_within_page_class_init (FoPropertyKeepWithPreviousWithinPageClass *klass)
104 {
105 GObjectClass *object_class = G_OBJECT_CLASS (klass);
106 FoPropertyClass *property_class = FO_PROPERTY_CLASS (klass);
107
108 parent_class = g_type_class_peek_parent (klass);
109
110 object_class->finalize = fo_property_keep_with_previous_within_page_finalize;
111
112 property_class->is_inherited = FALSE;
113 property_class->is_shorthand = FALSE;
114 property_class->resolve_enum =
115 fo_property_util_resolve_auto_always_enum;
116 property_class->validate =
117 fo_property_keep_with_previous_within_page_validate;
118 property_class->get_initial =
119 fo_property_keep_with_previous_within_page_get_initial;
120 }
121
122 /**
123 * fo_property_keep_with_previous_within_page_finalize:
124 * @object: #FoPropertyKeepWithPreviousWithinPage object to finalize.
125 *
126 * Implements #GObjectFinalizeFunc for #FoPropertyKeepWithPreviousWithinPage.
127 **/
128 void
fo_property_keep_with_previous_within_page_finalize(GObject * object)129 fo_property_keep_with_previous_within_page_finalize (GObject *object)
130 {
131 FoPropertyKeepWithPreviousWithinPage *keep_with_previous_within_page;
132
133 keep_with_previous_within_page = FO_PROPERTY_KEEP_WITH_PREVIOUS_WITHIN_PAGE (object);
134
135 G_OBJECT_CLASS (parent_class)->finalize (object);
136 }
137
138
139 /**
140 * fo_property_keep_with_previous_within_page_new:
141 *
142 * Creates a new #FoPropertyKeepWithPreviousWithinPage initialized to default value.
143 *
144 * Return value: the new #FoPropertyKeepWithPreviousWithinPage.
145 **/
146 FoProperty*
fo_property_keep_with_previous_within_page_new(void)147 fo_property_keep_with_previous_within_page_new (void)
148 {
149 FoProperty* keep_with_previous_within_page;
150
151 keep_with_previous_within_page =
152 FO_PROPERTY (g_object_new (fo_property_keep_with_previous_within_page_get_type (),
153 NULL));
154
155 return keep_with_previous_within_page;
156 }
157
158 /**
159 * fo_property_keep_with_previous_within_page_validate:
160 * @datatype: #FoDatatype to be validated against allowed datatypes and
161 * values for current property.
162 * @context: #FoContext object from which to possibly inherit values.
163 * @error: Information about any error that has occurred.
164 *
165 * Validates @datatype against allowed values. Returns @datatype, a
166 * replacement datatype value, or NULL if validation failed.
167 *
168 * Return value: Valid datatype value or NULL.
169 **/
170 FoDatatype*
fo_property_keep_with_previous_within_page_validate(FoDatatype * datatype,FoContext * context,GError ** error)171 fo_property_keep_with_previous_within_page_validate (FoDatatype *datatype,
172 FoContext *context,
173 GError **error)
174 {
175 FoDatatype *new_datatype;
176 GError *tmp_error = NULL;
177 gchar *token;
178
179 g_return_val_if_fail (datatype != NULL, NULL);
180 g_return_val_if_fail (FO_IS_DATATYPE (datatype), NULL);
181 g_return_val_if_fail (context != NULL, NULL);
182 g_return_val_if_fail (FO_IS_CONTEXT (context), NULL);
183 g_return_val_if_fail (error == NULL || *error == NULL, NULL);
184
185 if (FO_IS_ENUM (datatype))
186 {
187 return datatype;
188 }
189 else if (FO_IS_STRING (datatype))
190 {
191 token = fo_string_get_value (datatype);
192
193 new_datatype =
194 fo_property_util_resolve_auto_always_enum (token, context, &tmp_error);
195
196 g_object_unref (datatype);
197
198 if (tmp_error != NULL)
199 {
200 g_propagate_error (error, tmp_error);
201 return NULL;
202 }
203
204 return new_datatype;
205 }
206 else if (FO_IS_NAME (datatype))
207 {
208 token = fo_name_get_value (datatype);
209
210 new_datatype =
211 fo_property_util_resolve_auto_always_enum (token, context, &tmp_error);
212
213 g_object_unref (datatype);
214
215 if (tmp_error != NULL)
216 {
217 g_propagate_error (error, tmp_error);
218 return NULL;
219 }
220
221 return new_datatype;
222 }
223 else if (FO_IS_INTEGER (datatype))
224 {
225 return datatype;
226 }
227 else if (FO_IS_NUMBER (datatype))
228 {
229 new_datatype =
230 fo_integer_new_with_value ((gint) fo_number_get_value (datatype));
231
232 g_object_unref (datatype);
233
234 return new_datatype;
235 }
236 else
237 {
238 gchar *datatype_sprintf = fo_object_sprintf (datatype);
239
240 g_set_error (error,
241 FO_FO_ERROR,
242 FO_FO_ERROR_DATATYPE,
243 _(fo_fo_error_messages[FO_FO_ERROR_DATATYPE]),
244 class_name,
245 datatype_sprintf,
246 g_type_name (G_TYPE_FROM_INSTANCE (datatype)));
247
248 g_object_unref (datatype);
249
250 g_free (datatype_sprintf);
251
252 return NULL;
253 }
254 }
255
256 /**
257 * fo_property_keep_with_previous_within_page_get_initial:
258 *
259 * Get an instance of the property with the correct initial value.
260 *
261 * Return value: An instance of the property.
262 **/
263 FoProperty*
fo_property_keep_with_previous_within_page_get_initial(void)264 fo_property_keep_with_previous_within_page_get_initial (void)
265 {
266 static FoProperty *keep_with_previous_within_page = NULL;
267
268 if (keep_with_previous_within_page == NULL)
269 {
270 keep_with_previous_within_page =
271 fo_property_keep_with_previous_within_page_new ();
272 }
273
274 return keep_with_previous_within_page;
275 }
276