1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2017 Olaf Wintermann. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <stdio.h>
30 #include <stdlib.h>
31
32 #include "object.h"
33 #include "context.h"
34
35 #include "../ui/container.h"
36
37 void ui_end(UiObject *obj) {
38 if(!obj->next) {
39 return;
40 }
41
42 UiObject *prev = NULL;
43 while(obj->next) {
44 prev = obj;
45 obj = obj->next;
46 }
47
48 if(prev) {
49 // TODO: free last obj
50 prev->next = NULL;
51 }
52 }
53
54 void ui_end_new(UiObject *obj) {
55 if(!obj->container_end) {
56 return;
57 }
58 UiContainerX *rm = obj->container_end;
59 uic_object_pop_container(obj);
60 ui_free(obj->ctx, rm);
61 }
62
63 void ui_object_ref(UiObject *obj) {
64 obj->ref++;
65 }
66
67 int ui_object_unref(UiObject *obj) {
68 // it is possible to have 0 references, in case
69 // a window was created but ui_show was never called
70 if(obj->ref == 0 || --obj->ref == 0) {
71 if(obj->destroy) {
72 obj->destroy(obj);
73 }
74 uic_object_destroy(obj);
75 return 0;
76 }
77 return 1;
78 }
79
80 void uic_object_destroy(UiObject *obj) {
81 if(obj->ctx->close_callback) {
82 UiEvent ev;
83 ev.window = obj->window;
84 ev.document = obj->ctx->document;
85 ev.obj = obj;
86 ev.eventdata = NULL;
87 ev.intval = 0;
88 obj->ctx->close_callback(&ev, obj->ctx->close_data);
89 }
90 cxMempoolDestroy(obj->ctx->mp);
91 }
92
93 UiObject* uic_object_new(UiObject *toplevel, UIWIDGET widget) {
94 return uic_ctx_object_new(toplevel->ctx, widget);
95 }
96
97 UiObject* uic_ctx_object_new(UiContext *ctx, UIWIDGET widget) {
98 UiObject *newobj = cxCalloc(ctx->allocator, 1, sizeof(UiObject));
99 newobj->ctx = ctx;
100 newobj->widget = widget;
101
102 return newobj;
103 }
104
105 void uic_obj_add(UiObject *toplevel, UiObject *ctobj) {
106 UiObject *current = uic_current_obj(toplevel);
107 current->next = ctobj;
108 }
109
110 UiObject* uic_current_obj(UiObject *toplevel) {
111 if(!toplevel) {
112 return NULL;
113 }
114 UiObject *obj = toplevel;
115 while(obj->next) {
116 obj = obj->next;
117 }
118 return obj;
119 }
120
121 UiContainer* uic_get_current_container(UiObject *obj) {
122 return uic_current_obj(obj)->container;
123 }
124
125 void uic_object_push_container(UiObject *toplevel, UiContainerX *newcontainer) {
126 newcontainer->prev = toplevel->container_end;
127 if(toplevel->container_end) {
128 toplevel->container_end->next = newcontainer;
129 toplevel->container_end = newcontainer;
130 } else {
131 toplevel->container_begin = newcontainer;
132 toplevel->container_end = newcontainer;
133 }
134 }
135
136 void uic_object_pop_container(UiObject *toplevel) {
137 toplevel->container_end = toplevel->container_end->prev;
138 if(toplevel->container_end) {
139 toplevel->container_end->next = NULL;
140 } else {
141 toplevel->container_begin = NULL;
142 }
143 }
144