source: editcontext.c @ c394de8

release-1.7release-1.8release-1.9
Last change on this file since c394de8 was c394de8, checked in by David Benjamin <davidben@mit.edu>, 13 years ago
Use ref-counting to make editwin ownership saner When creating an editwin, one creates an editcontext which takes a reference to the editwin. Likewise, the pointer in owl_global holds reference. The reference counting manages their ownership claims. In addition, owl_global_set_typwin_inactive now does release a reference. Instead, the callback-calling commands take a reference and release it later. We may wish to further improve that so that the contexts are also ref-counted such that, when their commands are running, they will not be deallocated, even if popped. That will avoid the callback dance.
  • Property mode set to 100644
File size: 767 bytes
RevLine 
[c394de8]1#include "owl.h"
2
3#include <assert.h>
4
5bool owl_is_editcontext(const owl_context *ctx)
6{
7  return owl_context_matches(ctx, OWL_CTX_TYPWIN);
8}
9
10owl_context *owl_editcontext_new(int mode, owl_editwin *e, const char *keymap)
11{
12  owl_context *ctx = owl_context_new(mode, owl_editwin_ref(e), keymap,
13                                     owl_editwin_get_window(e));
14  ctx->delete_cb = owl_editcontext_delete_cb;
15  /* TODO: the flags are really screwy. */
16  assert(owl_is_editcontext(ctx));
17  return ctx;
18}
19
20owl_editwin *owl_editcontext_get_editwin(const owl_context *ctx)
21{
22  if (!owl_is_editcontext(ctx)) return NULL;
23  return ctx->data;
24}
25
26void owl_editcontext_delete_cb(owl_context *ctx)
27{
28  if (owl_is_editcontext(ctx) && ctx->data) {
29    owl_editwin_unref(ctx->data);
30    ctx->data = NULL;
31  }
32}
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