From 2994bf93de60930af3855db7a230c27be77de4ef Mon Sep 17 00:00:00 2001
From: Leo Tenenbaum <pommicket@gmail.com>
Date: Sat, 30 Jan 2021 13:36:03 -0500
Subject: middle click to close tab

---
 main.c |  1 -
 menu.c |  8 +++++---
 node.c | 28 ++++++++++++++++++++++++++--
 ted.c  |  2 +-
 4 files changed, 32 insertions(+), 7 deletions(-)

diff --git a/main.c b/main.c
index 1157ce4..cfabb85 100644
--- a/main.c
+++ b/main.c
@@ -1,5 +1,4 @@
 // @TODO:
-// - middle click to close tab
 // - try opening a file you don't have read permission for -- check for memory leaks!
 
 // - show something informative when there's no nodes open (i.e. ted->active_node == NULL).
diff --git a/menu.c b/menu.c
index 5cdf83f..8fd0a3b 100644
--- a/menu.c
+++ b/menu.c
@@ -128,12 +128,14 @@ static void menu_update(Ted *ted, Menu menu) {
 		case POPUP_YES:
 			// save changes
 			switch (ted->warn_unsaved) {
-			case CMD_TAB_CLOSE:
+			case CMD_TAB_CLOSE: {
 				menu_close(ted, true);
-				if (buffer_save(ted->prev_active_buffer)) {
+				TextBuffer *buffer = ted->active_buffer;
+				command_execute(ted, CMD_SAVE, 1); 
+				if (!buffer_unsaved_changes(buffer)) {
 					command_execute(ted, CMD_TAB_CLOSE, 1);
 				}
-				break;
+			} break;
 			case CMD_QUIT:
 				menu_close(ted, true);
 				if (ted_save_all(ted)) {
diff --git a/node.c b/node.c
index f927f70..a767c7a 100644
--- a/node.c
+++ b/node.c
@@ -45,12 +45,14 @@ static void node_close(Ted *ted, Node *node) {
 }
 
 // close tab, WITHOUT checking for unsaved changes!
-static void node_tab_close(Ted *ted, Node *node, u16 index) {
+// returns true if the node is still open
+static bool node_tab_close(Ted *ted, Node *node, u16 index) {
 	u16 ntabs = (u16)arr_len(node->tabs);
 	assert(index < ntabs);
 	if (ntabs == 1) {
 		// only 1 tab left, just close the node
 		node_close(ted, node);
+		return false;
 	} else {
 		u16 buffer_index = node->tabs[index];
 		// remove tab from array
@@ -66,6 +68,7 @@ static void node_tab_close(Ted *ted, Node *node, u16 index) {
 			// fix active buffer if necessary
 			ted->active_buffer = &ted->buffers[node->tabs[node->active_tab]];
 		}
+		return true;
 	}
 }
 
@@ -76,7 +79,6 @@ static void node_frame(Ted *ted, Node *node, Rect r) {
 		u32 const *colors = settings->colors;
 		Font *font = ted->font;
 		
-		u16 buffer_index = node->tabs[node->active_tab];
 		float tab_bar_height = 20;
 		
 		Rect tab_bar_rect = r;
@@ -92,6 +94,27 @@ static void node_frame(Ted *ted, Node *node, Rect r) {
 					node_switch_to_tab(ted, node, tab_index);
 				}
 			}
+			for (u16 c = 0; c < ted->nmouse_clicks[SDL_BUTTON_MIDDLE]; ++c) {
+				v2 click = ted->mouse_clicks[SDL_BUTTON_MIDDLE][c];
+				if (rect_contains_point(tab_bar_rect, click)) {
+					u16 tab_index = (u16)((click.x - r.pos.x) / tab_width);
+					u16 buffer_idx = node->tabs[tab_index];
+					TextBuffer *buffer = &ted->buffers[buffer_idx];
+					// close that tab
+					if (buffer_unsaved_changes(buffer)) {
+						// make sure unsaved changes dialog is opened
+						ted_switch_to_buffer(ted, buffer_idx);
+						command_execute(ted, CMD_TAB_CLOSE, 1);
+					} else {
+						if (!node_tab_close(ted, node, tab_index)) {
+							return; // node closed
+						}
+					}
+					ntabs = (u16)arr_len(node->tabs);
+					tab_width = r.size.x / ntabs;
+				}
+			}
+
 			for (u16 i = 0; i < ntabs; ++i) {
 				TextBuffer *buffer = &ted->buffers[node->tabs[i]];
 				char tab_title[256];
@@ -123,6 +146,7 @@ static void node_frame(Ted *ted, Node *node, Rect r) {
 			}
 		}
 
+		u16 buffer_index = node->tabs[node->active_tab];
 		TextBuffer *buffer = &ted->buffers[buffer_index];
 		assert(ted->buffers_used[buffer_index]);
 		Rect buffer_rect = rect_translate(r, V2(0, tab_bar_height));
diff --git a/ted.c b/ted.c
index 0e8be05..bbb65d0 100644
--- a/ted.c
+++ b/ted.c
@@ -128,7 +128,7 @@ static i32 ted_new_node(Ted *ted) {
 	
 }
 
-static void node_tab_close(Ted *ted, Node *node, u16 index);
+static bool node_tab_close(Ted *ted, Node *node, u16 index);
 
 // Open a new buffer. Fills out *tab to the index of the tab used, and *buffer_idx to the index of the buffer.
 // Returns true on success.
-- 
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