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annotate nodejs/observer.cc @ 1517:31a21656c0a8

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Describe designs of Scribboo
author Thinker K.F. Li <thinker@codemud.net>
date Sat, 14 May 2011 01:07:23 +0800
parents 1993e5ae60aa
children
rev   line source
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1 // -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
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2 // vim: sw=4:ts=8:sts=4
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3 #include <v8.h>
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4 #include "mbfly_njs.h"
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5
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6 extern "C" {
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7 #include <mb.h>
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8 #include <string.h>
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9 }
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10
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11 #ifndef ASSERT
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12 #define ASSERT(x)
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13 #endif
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14
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15 using namespace v8;
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16
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17 /*! \defgroup xnjsmb_observer JS binding for observer, subject and events
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18 * \ingroup xnjsmb
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19 *
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20 * @{
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21 */
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22
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23 struct xnjsmb_observer_data {
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24 Persistent<Function> func;
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25 Persistent<Context> ctx;
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26 };
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27
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28 static void
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29 event_handler(event_t *evt, void *arg);
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30
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31 static void
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32 xnjsmb_event_mod(Handle<Object> self, event_t *evt) {
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33 mouse_event_t *mevt;
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34 mb_kb_event_t *xkbevt;
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35
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36 switch(evt->type) {
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37 case EVT_ANY:
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38 case EVT_MOUSE_OVER:
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39 case EVT_MOUSE_OUT:
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40 case EVT_MOUSE_MOVE:
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41 case EVT_MOUSE_BUT_PRESS:
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42 case EVT_MOUSE_BUT_RELEASE:
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43 mevt = (mouse_event_t *)evt;
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44 SET(self, "x", Integer::New(mevt->x));
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45 SET(self, "y", Integer::New(mevt->y));
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46 SET(self, "but_state", Integer::New(mevt->but_state));
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47 SET(self, "button", Integer::New(mevt->button));
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48 break;
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49
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50 case EVT_KB_PRESS:
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51 case EVT_KB_RELEASE:
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52 xkbevt = (mb_kb_event_t *)evt;
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53 SET(self, "keycode", Integer::New(xkbevt->keycode));
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54 SET(self, "sym", Integer::New(xkbevt->sym));
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55 break;
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56
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57 case EVT_PROGM_COMPLETE:
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58 case EVT_RDMAN_REDRAW:
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59 case EVT_MONITOR_ADD:
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60 case EVT_MONITOR_REMOVE:
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61 case EVT_MONITOR_FREE:
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62 case EVT_MOUSE_MOVE_RAW:
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63 default:
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64 /* Not implemented. Do nothing. */
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65 break;
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66 }
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67 }
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68
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69 static observer_t *
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70 _subject_add_event_observer(subject_t *subject, int type,
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71 Handle<Function> func) {
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72 observer_t *observer;
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73 xnjsmb_observer_data *data;
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74 Handle<Context> ctx;
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75
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76 data = new xnjsmb_observer_data;
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77 if(data == NULL)
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78 return NULL;
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79 data->func = Persistent<Function>::New(func);
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80 ctx = Context::GetCurrent();
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81 data->ctx = Persistent<Context>::New(ctx);
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82 observer = subject_add_event_observer(subject, type,
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83 event_handler,
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84 data);
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85
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86 return observer;
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87 }
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88
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89 static void
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90 _subject_remove_observer(subject_t *subject, observer_t *observer) {
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91 xnjsmb_observer_data *data;
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92
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93 subject_remove_observer(subject, observer);
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94 data = (xnjsmb_observer_data *)observer->arg;
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95 delete data;
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96 }
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97
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98 static Handle<Value>
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99 xnjsmb_event_tgt_getter(Handle<Object> self, event_t *evt, const char **err) {
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100 Persistent<Object> *hdl;
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101
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102 hdl = (Persistent<Object> *)
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103 mb_prop_get(&((mb_obj_t *)evt->tgt->obj)->props,
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104 PROP_JSOBJ);
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105 return Local<Object>::New(*hdl);
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106 }
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107
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108 static void
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109 xnjsmb_event_tgt_setter(Handle<Object> self, event_t *evt,
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110 Handle<Value> value, const char **err) {
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111 *err = "Not implemented";
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112 }
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113
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114 static Handle<Value>
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115 xnjsmb_event_cur_tgt_getter(Handle<Object> self, event_t *evt,
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116 const char **err) {
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117 Persistent<Object> *hdl;
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118
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119 hdl = (Persistent<Object> *)
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120 mb_prop_get(&((mb_obj_t *)evt->cur_tgt->obj)->props,
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121 PROP_JSOBJ);
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122 return Local<Object>::New(*hdl);
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123 }
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124
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125 static void
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126 xnjsmb_event_cur_tgt_setter(Handle<Object> self, event_t *evt,
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127 Handle<Value> value, const char **err) {
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128 *err = "Not implemented";
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129 }
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130
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131 /* This is the part of the code generated by gen_v8_binding.m4 */
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132 #include "observer-inc.h"
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133
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134 static void
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135 event_handler(event_t *evt, void *arg) {
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136 xnjsmb_observer_data *data = (xnjsmb_observer_data *)arg;
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137 Handle<Value> evt_obj;
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138 Handle<Value> func_args[1];
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139 Handle<Value> r;
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140 Context::Scope context_scope(data->ctx);
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parents: 686
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141 TryCatch trycatch;
651
aa52883534fc Code generated by generator can be built
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
142
656
38c720272dd5 Change prefix for the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 655
diff changeset
143 evt_obj = xnjsmb_auto_event_new(evt);
651
aa52883534fc Code generated by generator can be built
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
144 ASSERT(!evt_obj.IsEmpty());
aa52883534fc Code generated by generator can be built
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
145 func_args[0] = evt_obj;
698
32e1b8005403 Handle exception for event handler
Thinker K.F. Li <thinker@branda.to>
parents: 686
diff changeset
146 r = data->func->Call(data->ctx->Global(), 1, func_args);
32e1b8005403 Handle exception for event handler
Thinker K.F. Li <thinker@branda.to>
parents: 686
diff changeset
147 if(r.IsEmpty()) {
32e1b8005403 Handle exception for event handler
Thinker K.F. Li <thinker@branda.to>
parents: 686
diff changeset
148 Handle<Value> exception = trycatch.Exception();
32e1b8005403 Handle exception for event handler
Thinker K.F. Li <thinker@branda.to>
parents: 686
diff changeset
149 String::AsciiValue exc_str(exception);
32e1b8005403 Handle exception for event handler
Thinker K.F. Li <thinker@branda.to>
parents: 686
diff changeset
150 fprintf(stderr, "Exception: %s\n", *exc_str);
32e1b8005403 Handle exception for event handler
Thinker K.F. Li <thinker@branda.to>
parents: 686
diff changeset
151 }
651
aa52883534fc Code generated by generator can be built
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
152 }
aa52883534fc Code generated by generator can be built
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
153
676
f264b50c469c Bind subject of mouse_event to JS object of coord
Thinker K.F. Li <thinker@branda.to>
parents: 675
diff changeset
154 Handle<Value>
f264b50c469c Bind subject of mouse_event to JS object of coord
Thinker K.F. Li <thinker@branda.to>
parents: 675
diff changeset
155 export_xnjsmb_auto_subject_new(subject_t *subject) {
f264b50c469c Bind subject of mouse_event to JS object of coord
Thinker K.F. Li <thinker@branda.to>
parents: 675
diff changeset
156 Handle<Value> val;
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 788
diff changeset
157
676
f264b50c469c Bind subject of mouse_event to JS object of coord
Thinker K.F. Li <thinker@branda.to>
parents: 675
diff changeset
158 val = xnjsmb_auto_subject_new(subject);
f264b50c469c Bind subject of mouse_event to JS object of coord
Thinker K.F. Li <thinker@branda.to>
parents: 675
diff changeset
159 return val;
f264b50c469c Bind subject of mouse_event to JS object of coord
Thinker K.F. Li <thinker@branda.to>
parents: 675
diff changeset
160 }
f264b50c469c Bind subject of mouse_event to JS object of coord
Thinker K.F. Li <thinker@branda.to>
parents: 675
diff changeset
161
658
62c2de99b03a Remove get_object() method for subject for js
Thinker K.F. Li <thinker@branda.to>
parents: 656
diff changeset
162 void
62c2de99b03a Remove get_object() method for subject for js
Thinker K.F. Li <thinker@branda.to>
parents: 656
diff changeset
163 xnjsmb_observer_init(void) {
671
fc29a343ce7c Track JS object with property store of objects
Thinker K.F. Li <thinker@branda.to>
parents: 658
diff changeset
164 xnjsmb_auto_observer_init();
fc29a343ce7c Track JS object with property store of objects
Thinker K.F. Li <thinker@branda.to>
parents: 658
diff changeset
165 xnjsmb_auto_subject_init();
fc29a343ce7c Track JS object with property store of objects
Thinker K.F. Li <thinker@branda.to>
parents: 658
diff changeset
166 xnjsmb_auto_event_init();
658
62c2de99b03a Remove get_object() method for subject for js
Thinker K.F. Li <thinker@branda.to>
parents: 656
diff changeset
167 }
686
ddce24029561 More doc
Thinker K.F. Li <thinker@branda.to>
parents: 679
diff changeset
168
ddce24029561 More doc
Thinker K.F. Li <thinker@branda.to>
parents: 679
diff changeset
169 /* @} */