From 59d24187f757463b1fef6c8c9ba4ebbc1952f74d Mon Sep 17 00:00:00 2001
From: Michael Drake <tlsa@netsurf-browser.org>
Date: Fri, 8 Feb 2013 16:05:44 +0000
Subject: Support dropping text file on textarea widget.

---
 desktop/textarea.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 desktop/textarea.h | 10 ++++++++++
 render/html.c      | 14 +++++++-------
 3 files changed, 63 insertions(+), 7 deletions(-)

diff --git a/desktop/textarea.c b/desktop/textarea.c
index 25630e464..7324b821b 100644
--- a/desktop/textarea.c
+++ b/desktop/textarea.c
@@ -1110,6 +1110,52 @@ bool textarea_set_text(struct textarea *ta, const char *text)
 }
 
 
+/* exported interface, documented in textarea.h */
+bool textarea_drop_text(struct textarea *ta, const char *text,
+		size_t text_length)
+{
+	struct textarea_msg msg;
+	unsigned int caret_pos;
+	size_t text_chars;
+
+	if (ta->flags & TEXTAREA_READONLY)
+		return false;
+
+	if (text == NULL)
+		return false;
+
+	text_chars = utf8_bounded_length(text, text_length);
+	caret_pos = textarea_get_caret(ta);
+
+	if (ta->sel_start != -1) {
+		if (!textarea_replace_text(ta, ta->sel_start, ta->sel_end,
+				text, text_length, false))
+			return false;
+
+		caret_pos = ta->sel_start + text_chars;
+		ta->sel_start = ta->sel_end = -1;
+	} else {
+		if (!textarea_replace_text(ta, caret_pos, caret_pos,
+				text, text_length, false))
+			return false;
+		caret_pos += text_chars;
+	}
+
+	textarea_set_caret(ta, caret_pos);
+
+	msg.ta = ta;
+	msg.type = TEXTAREA_MSG_REDRAW_REQUEST;
+	msg.data.redraw.x0 = 0;
+	msg.data.redraw.y0 = 0;
+	msg.data.redraw.x1 = ta->vis_width;
+	msg.data.redraw.y1 = ta->vis_height;
+
+	ta->callback(ta->data, &msg);
+
+	return true;
+}
+
+
 /* exported interface, documented in textarea.h */
 int textarea_get_text(struct textarea *ta, char *buf, unsigned int len)
 {
diff --git a/desktop/textarea.h b/desktop/textarea.h
index 560f1ca28..566e0cf6c 100644
--- a/desktop/textarea.h
+++ b/desktop/textarea.h
@@ -123,6 +123,16 @@ void textarea_destroy(struct textarea *ta);
  */
 bool textarea_set_text(struct textarea *ta, const char *text);
 
+/**
+ * Insert the text in a text area at the caret, replacing any selection.
+ *
+ * \param ta Text area
+ * \param text UTF-8 text to set text area's contents to
+ * \return true on success, false on memory exhaustion or if ta lacks caret
+ */
+bool textarea_drop_text(struct textarea *ta, const char *text,
+		size_t text_length);
+
 /**
  * Extract the text from a text area
  *
diff --git a/render/html.c b/render/html.c
index 1eb0f91f1..4fc152a84 100644
--- a/render/html.c
+++ b/render/html.c
@@ -2796,7 +2796,7 @@ static bool html_drop_file_at_point(struct content *c, int x, int y, char *file)
 		/* Redraw box. */
 		html__redraw_a_box(html, file_box);
 
-	} else if (html->bw != NULL) {
+	} else {
 		/* File dropped on text input */
 
 		size_t file_len;
@@ -2805,7 +2805,7 @@ static bool html_drop_file_at_point(struct content *c, int x, int y, char *file)
 		char *utf8_buff;
 		utf8_convert_ret ret;
 		unsigned int size;
-		struct browser_window *bw;
+		int bx, by;
 
 		/* Open file */
 		fp = fopen(file, "rb");
@@ -2861,13 +2861,13 @@ static bool html_drop_file_at_point(struct content *c, int x, int y, char *file)
 		size = strlen(utf8_buff);
 
 		/* Simulate a click over the input box, to place caret */
-		browser_window_mouse_click(html->bw,
-				BROWSER_MOUSE_PRESS_1, x, y);
-
-		bw = browser_window_get_root(html->bw);
+		box_coords(text_box, &bx, &by);
+		textarea_mouse_action(text_box->gadget->data.text.ta,
+				BROWSER_MOUSE_PRESS_1, x - bx, y - by);
 
 		/* Paste the file as text */
-		browser_window_paste_text(bw, utf8_buff, size, true);
+		textarea_drop_text(text_box->gadget->data.text.ta,
+				utf8_buff, size);
 
 		free(utf8_buff);
 	}
-- 
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