From 9e7cb40b1f527c1bf431d4ca6c9b9ca4e70b5459 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc=20Andr=C3=A9=20Tanner?= <mat@brain-dump.org>
Date: Thu, 9 Jul 2015 14:54:23 +0200
Subject: ui: move input handling code to ui specific files

---
 editor.h    |  5 -----
 ui-curses.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 ui.h        | 11 +++++++----
 vis.c       | 29 +----------------------------
 4 files changed, 50 insertions(+), 37 deletions(-)

diff --git a/editor.h b/editor.h
index 36f2829..edfa210 100644
--- a/editor.h
+++ b/editor.h
@@ -26,11 +26,6 @@ typedef union {
 	void (*f)(Editor*); /* generic editor commands */
 } Arg;
 
-typedef struct {
-	char str[6]; /* UTF8 character or terminal escape code */
-	int code;    /* curses KEY_* constant */
-} Key;
-
 #define MAX_KEYS 2
 typedef Key KeyCombo[MAX_KEYS];
 
diff --git a/ui-curses.c b/ui-curses.c
index 619524b..f2f6899 100644
--- a/ui-curses.c
+++ b/ui-curses.c
@@ -528,6 +528,46 @@ static void ui_suspend(Ui *ui) {
 	raise(SIGSTOP);
 }
 
+static bool ui_haskey(Ui *ui) {
+	nodelay(stdscr, TRUE);
+	int c = getch();
+	if (c != ERR)
+		ungetch(c);
+	nodelay(stdscr, FALSE);
+	return c != ERR;
+}
+
+static Key ui_getkey(Ui *ui) {
+	Key key = { .str = "", .code = 0 };
+	int keycode = getch(), cur = 0;
+	if (keycode == ERR)
+		return key;
+
+	if (keycode >= KEY_MIN) {
+		key.code = keycode;
+	} else {
+		key.str[cur++] = keycode;
+		int len = 1;
+		unsigned char keychar = keycode;
+		if (ISASCII(keychar)) len = 1;
+		else if (keychar == 0x1B || keychar >= 0xFC) len = 6;
+		else if (keychar >= 0xF8) len = 5;
+		else if (keychar >= 0xF0) len = 4;
+		else if (keychar >= 0xE0) len = 3;
+		else if (keychar >= 0xC0) len = 2;
+		len = MIN(len, LENGTH(key.str));
+
+		if (cur < len) {
+			nodelay(stdscr, TRUE);
+			for (int t; cur < len && (t = getch()) != ERR; cur++)
+				key.str[cur] = t;
+			nodelay(stdscr, FALSE);
+		}
+	}
+
+	return key;
+}
+
 Ui *ui_curses_new(void) {
 	setlocale(LC_CTYPE, "");
 	if (!getenv("ESCDELAY"))
@@ -571,6 +611,8 @@ Ui *ui_curses_new(void) {
 		.info = info,
 		.info_hide = info_hide,
 		.color_get = color_get,
+		.haskey = ui_haskey,
+		.getkey = ui_getkey,
 	};
 
 	struct sigaction sa;
diff --git a/ui.h b/ui.h
index 732c618..40e2ea7 100644
--- a/ui.h
+++ b/ui.h
@@ -15,6 +15,11 @@ enum UiOption {
 	UI_OPTION_LINE_NUMBERS_RELATIVE = 1 << 1,
 };
 
+typedef struct {
+	char str[6]; /* UTF8 character or terminal escape code */
+	int code;    /* curses KEY_* constant */
+} Key;
+
 #include <stdbool.h>
 #include <stdarg.h>
 #include "text.h"
@@ -40,10 +45,8 @@ struct Ui {
 	void (*update)(Ui*);
 	void (*suspend)(Ui*);
 	void (*resume)(Ui*);
-/*	TODO main loop integration, signal handling
-	Key getkey(void);
-	bool haskey(void);
-*/
+	Key (*getkey)(Ui*);
+	bool (*haskey)(Ui*);
 };
 
 struct UiWin {
diff --git a/vis.c b/vis.c
index ee6612b..f4f712a 100644
--- a/vis.c
+++ b/vis.c
@@ -2268,36 +2268,9 @@ static void keypress(Key *key) {
 }
 
 static Key getkey(void) {
-	Key key = { .str = "", .code = 0 };
-	int keycode = getch(), cur = 0;
-	if (keycode == ERR)
-		return key;
-
-	if (keycode >= KEY_MIN) {
-		key.code = keycode;
-	} else {
-		key.str[cur++] = keycode;
-		int len = 1;
-		unsigned char keychar = keycode;
-		if (ISASCII(keychar)) len = 1;
-		else if (keychar == 0x1B || keychar >= 0xFC) len = 6;
-		else if (keychar >= 0xF8) len = 5;
-		else if (keychar >= 0xF0) len = 4;
-		else if (keychar >= 0xE0) len = 3;
-		else if (keychar >= 0xC0) len = 2;
-		len = MIN(len, LENGTH(key.str));
-
-		if (cur < len) {
-			nodelay(stdscr, TRUE);
-			for (int t; cur < len && (t = getch()) != ERR; cur++)
-				key.str[cur] = t;
-			nodelay(stdscr, FALSE);
-		}
-	}
-
+	Key key = vis->ui->getkey(vis->ui);
 	if (config->keypress && !config->keypress(&key))
 		return (Key){ .str = "", .code = 0 };
-
 	return key;
 }
 
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