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authorLeo Tenenbaum <pommicket@gmail.com>2021-02-28 16:35:38 -0500
committerLeo Tenenbaum <pommicket@gmail.com>2021-02-28 16:35:38 -0500
commit52fd5e0c95da236fd14682ed8a7cfa34afbab2c0 (patch)
tree4f8ca7df068983ad6aa2de38a7862a9bb607f258 /ted.c
parentfb2a0b9998a599f9e8a9a1e911fd43345778f6ef (diff)
set active_node to NULL when line buffer is active
Diffstat (limited to 'ted.c')
-rw-r--r--ted.c67
1 files changed, 41 insertions, 26 deletions
diff --git a/ted.c b/ted.c
index 17f2205..049ed92 100644
--- a/ted.c
+++ b/ted.c
@@ -22,6 +22,7 @@ void ted_clearerr(Ted *ted) {
ted->error[0] = '\0';
}
+
static void ted_out_of_mem(Ted *ted) {
ted_seterr(ted, "Out of memory.");
}
@@ -91,6 +92,33 @@ static void ted_load_fonts(Ted *ted) {
ted_load_font(ted, "assets/font-bold.ttf", &ted->font_bold);
}
+// sets the active buffer to this buffer, and updates active_node, etc. accordingly
+// you can pass NULL to buffer to make it so no buffer is active.
+static void ted_switch_to_buffer(Ted *ted, TextBuffer *buffer) {
+ ted->active_buffer = buffer;
+ if (buffer >= ted->buffers && buffer < ted->buffers + TED_MAX_BUFFERS) {
+ u16 idx = (u16)(buffer - ted->buffers);
+ // now we need to figure out where this buffer is
+ bool *nodes_used = ted->nodes_used;
+ for (u16 i = 0; i < TED_MAX_NODES; ++i) {
+ if (nodes_used[i]) {
+ Node *node = &ted->nodes[i];
+ arr_foreach_ptr(node->tabs, u16, tab) {
+ if (idx == *tab) {
+ node->active_tab = (u16)(tab - node->tabs);
+ ted->active_node = node;
+ return;
+ }
+ }
+ }
+ }
+ assert(0);
+ } else {
+ ted->active_node = NULL;
+ }
+}
+
+
// returns the index of an available buffer, or -1 if none are available
static i32 ted_new_buffer(Ted *ted) {
bool *buffers_used = ted->buffers_used;
@@ -110,7 +138,7 @@ static i32 ted_new_buffer(Ted *ted) {
static void ted_delete_buffer(Ted *ted, u16 index) {
TextBuffer *buffer = &ted->buffers[index];
if (buffer == ted->active_buffer)
- ted->active_buffer = NULL; // make sure we don't set the active buffer to something invalid
+ ted_switch_to_buffer(ted, NULL); // make sure we don't set the active buffer to something invalid
buffer_free(buffer);
ted->buffers_used[index] = false;
}
@@ -132,9 +160,8 @@ static i32 ted_new_node(Ted *ted) {
// switch to this node
static void ted_node_switch(Ted *ted, Node *node) {
- ted->active_node = node;
assert(node->tabs);
- ted->active_buffer = &ted->buffers[node->tabs[node->active_tab]];
+ ted_switch_to_buffer(ted, &ted->buffers[node->tabs[node->active_tab]]);
}
static bool node_tab_close(Ted *ted, Node *node, u16 index);
@@ -159,10 +186,10 @@ static Status ted_open_buffer(Ted *ted, u16 *buffer_idx, u16 *tab) {
if (arr_len(node->tabs) < TED_MAX_TABS) {
arr_add(node->tabs, (u16)new_buffer_index);
TextBuffer *new_buffer = &ted->buffers[new_buffer_index];
- ted->active_buffer = new_buffer;
node->active_tab = (u16)(arr_len(node->tabs) - 1);
*buffer_idx = (u16)new_buffer_index;
*tab = node->active_tab;
+ ted_switch_to_buffer(ted, new_buffer);
return true;
} else {
ted_seterr(ted, "Too many tabs.");
@@ -174,26 +201,6 @@ static Status ted_open_buffer(Ted *ted, u16 *buffer_idx, u16 *tab) {
}
}
-// sets the active buffer to this buffer, and updates active_node, etc. accordingly
-static void ted_switch_to_buffer(Ted *ted, u16 buffer_idx) {
- ted->active_buffer = &ted->buffers[buffer_idx];
- // now we need to figure out where this buffer is
- bool *nodes_used = ted->nodes_used;
- for (u16 i = 0; i < TED_MAX_NODES; ++i) {
- if (nodes_used[i]) {
- Node *node = &ted->nodes[i];
- arr_foreach_ptr(node->tabs, u16, tab) {
- if (buffer_idx == *tab) {
- node->active_tab = (u16)(tab - node->tabs);
- ted->active_node = node;
- return;
- }
- }
- }
- }
- assert(0);
-}
-
// Returns true on success
static bool ted_open_file(Ted *ted, char const *filename) {
@@ -204,7 +211,7 @@ static bool ted_open_file(Ted *ted, char const *filename) {
if (buffers_used[i]) {
if (streq(filename, buffer_get_filename(&buffers[i]))) {
buffer_reload(&buffers[i]); // make sure buffer is up to date with the file
- ted_switch_to_buffer(ted, i);
+ ted_switch_to_buffer(ted, &buffers[i]);
return true;
}
}
@@ -259,7 +266,7 @@ static bool ted_save_all(Ted *ted) {
TextBuffer *buffer = &ted->buffers[i];
if (buffer_unsaved_changes(buffer)) {
if (buffer->filename && buffer_is_untitled(buffer)) {
- ted_switch_to_buffer(ted, i);
+ ted_switch_to_buffer(ted, buffer);
menu_open(ted, MENU_SAVE_AS);
success = false; // we haven't saved this buffer yet; we've just opened the "save as" menu.
break;
@@ -276,3 +283,11 @@ static bool ted_save_all(Ted *ted) {
static void ted_full_path(Ted *ted, char const *relpath, char *abspath, size_t abspath_size) {
path_full(ted->cwd, relpath, abspath, abspath_size);
}
+
+// are any nodes open?
+static bool ted_anything_open(Ted *ted) {
+ for (uint i = 0; i < TED_MAX_NODES; ++i)
+ if (ted->nodes_used[i])
+ return true;
+ return false;
+}