remove all direct access to selection structure

content/handlers/html/interaction.c

@@ -1247,7 +1247,7 @@ default_mouse_action(html_content *html,
 			selection_clear(&html->sel, true);
 		}
 
-		if (selection_defined(&html->sel)) {
+		if (selection_active(&html->sel)) {
 			sel_owner.none = false;
 			html_set_selection(html,
 					   HTML_SELECTION_SELF,
@@ -1586,13 +1586,8 @@ bool html_keypress(struct content *c, uint32_t key)
 		return true;
 
 	case NS_KEY_ESCAPE:
-		if (selection_defined(sel)) {
-			selection_clear(sel, true);
-			return true;
-		}
-
 		/* if there's no selection, leave Escape for the caller */
-		return false;
+		return selection_clear(sel, true);
 	}
 
 	return false;

content/handlers/html/redraw.c

@@ -184,8 +184,7 @@ text_redraw(const char *utf8_text,
 		unsigned end_idx;
 
 		/* first try the browser window's current selection */
-		if (selection_defined(sel) &&
-		    selection_highlighted(sel,
+		if (selection_highlighted(sel,
 					  offset,
 					  offset + len,
 					  &start_idx,

content/handlers/text/textplain.c

@@ -810,21 +810,14 @@ static bool textplain_keypress(struct content *c, uint32_t key)
 		return true;
 
 	case NS_KEY_ESCAPE:
-		if (selection_defined(sel)) {
-			selection_clear(sel, true);
-			return true;
-		}
-
 		/* if there's no selection, leave Escape for the caller */
-		return false;
+		return selection_clear(sel, true);
 	}
 
 	return false;
 }
 
 
-
-
 /**
  * Redraw a text string with highlighting
  * (for selection/search)
@@ -871,8 +864,7 @@ text_draw(const char *utf8_text,
 		unsigned end_idx;
 
 		/* first try the browser window's current selection */
-		if (selection_defined(sel) &&
-		    selection_highlighted(sel,
+		if (selection_highlighted(sel,
 					  offset,
 					  offset + len,
 					  &start_idx,
@@ -1167,16 +1159,16 @@ textplain_redraw(struct content *c,
 				struct selection *sel = &text->sel;
 				bool highlighted = false;
 
-				if (selection_defined(sel)) {
-					unsigned start_idx, end_idx;
-					if (selection_highlighted(sel,
-								  tab_ofst,
-								  tab_ofst + 1,
-								  &start_idx,
-								  &end_idx))
-						highlighted = true;
+				unsigned start_idx, end_idx;
+				if (selection_highlighted(sel,
+							  tab_ofst,
+							  tab_ofst + 1,
+							  &start_idx,
+							  &end_idx)) {
+					highlighted = true;
 				}
 
+
 				if (!highlighted &&
 				    (c->textsearch.context != NULL)) {
 					unsigned start_idx, end_idx;
@@ -1682,9 +1674,3 @@ size_t textplain_size(struct content *c)
 
 	return text->utf8_data_size;
 }
-
-
-
-
-
-

content/textsearch.c

@@ -165,7 +165,6 @@ static void free_matches(struct textsearch_context *textsearch)
 static void search_show_all(bool all, struct textsearch_context *context)
 {
 	struct list_entry *a;
-	nserror res;
 
 	for (a = context->found->next; a; a = a->next) {
 		bool add = true;
@@ -628,7 +627,6 @@ content_textsearch_ishighlighted(struct textsearch_context *textsearch,
 
 	for (cur = textsearch->found->next; cur != NULL; cur = cur->next) {
 		if (cur->sel &&
-		    selection_defined(cur->sel) &&
 		    selection_highlighted(cur->sel,
 					  start_offset,
 					  end_offset,

desktop/selection.c

@@ -22,32 +22,17 @@
  * implementation of text selection within browser windows.
  */
 
-#include <assert.h>
-#include <stdio.h>
 #include <stdlib.h>
-#include <stdbool.h>
-#include <string.h>
-#include <dom/dom.h>
 
-#include "utils/log.h"
-#include "utils/utf8.h"
-#include "utils/utils.h"
-#include "netsurf/form.h"
-#include "html/box.h"
-#include "html/box_inspect.h"
-#include "html/private.h"
-#include "html/font.h"
-#include "text/textplain.h"
-#include "netsurf/browser_window.h"
-
-#include "netsurf/mouse.h"
-#include "desktop/browser_private.h"
-#include "netsurf/plotters.h"
-#include "desktop/save_text.h"
-#include "desktop/selection.h"
 #include "netsurf/clipboard.h"
+#include "netsurf/browser_window.h"
 #include "netsurf/window.h"
+#include "utils/utils.h"
+#include "content/content_protected.h"
+
+#include "desktop/browser_private.h"
 #include "desktop/gui_internal.h"
+#include "desktop/selection.h"
 
 
 struct selection_string {
@@ -334,7 +319,7 @@ selection_click(struct selection *s,
 
 	top = browser_window_get_root(top);
 
-	if (selection_defined(s)) {
+	if (s->defined) {
 		if (idx > s->start_idx) {
 			if (idx <= s->end_idx) {
 				pos = 0;
@@ -376,7 +361,7 @@ selection_click(struct selection *s,
 		} else if (mouse & BROWSER_MOUSE_DRAG_2) {
 
 			/* adjust selection, but only if there is one */
-			if (!selection_defined(s)) {
+			if (!s->defined) {
 				return false;	/* ignore Adjust drags */
 			}
 
@@ -396,7 +381,7 @@ selection_click(struct selection *s,
 		} else if (mouse & BROWSER_MOUSE_CLICK_2) {
 
 			/* ignore Adjust clicks when there's no selection */
-			if (!selection_defined(s)) {
+			if (!s->defined) {
 				return false;
 			}
 
@@ -521,7 +506,7 @@ bool selection_copy_to_clipboard(struct selection *s)
 
 
 /* exported interface documented in desktop/selection.h */
-void selection_clear(struct selection *s, bool redraw)
+bool selection_clear(struct selection *s, bool redraw)
 {
 	int old_start, old_end;
 	bool was_defined;
@@ -539,6 +524,8 @@ void selection_clear(struct selection *s, bool redraw)
 	if (redraw && was_defined) {
 		selection_redraw(s, old_start, old_end);
 	}
+
+	return was_defined;
 }
 
 
@@ -569,9 +556,11 @@ selection_highlighted(const struct selection *s,
 		      unsigned *start_idx,
 		      unsigned *end_idx)
 {
-	/* caller should have checked first for efficiency */
 	assert(s);
-	assert(s->defined);
+
+	if (!s->defined) {
+		return false;
+	}
 
 	if ((end <= s->start_idx) ||
 	    (start >= s->end_idx)) {
@@ -583,3 +572,24 @@ selection_highlighted(const struct selection *s,
 
 	return true;
 }
+
+/* exported interface documented in desktop/selection.h */
+bool selection_active(struct selection *s)
+{
+	return s->defined;
+}
+
+bool selection_dragging(struct selection *s)
+{
+	return s->drag_state != DRAG_NONE;
+}
+
+bool selection_dragging_start(struct selection *s)
+{
+	return s->drag_state == DRAG_START;
+}
+
+void selection_drag_end(struct selection *s)
+{
+	s->drag_state = DRAG_NONE;
+}

desktop/selection.h

@@ -20,8 +20,8 @@
   * Text selection within browser windows (interface).
   */
 
-#ifndef _NETSURF_DESKTOP_SELECTION_H_
-#define _NETSURF_DESKTOP_SELECTION_H_
+#ifndef NETSURF_DESKTOP_SELECTION_H_
+#define NETSURF_DESKTOP_SELECTION_H_
 
 #include <stdbool.h>
 #include "netsurf/mouse.h"
@@ -37,13 +37,7 @@ typedef enum {
 	DRAG_END
 } seln_drag_state;
 
-
-/* this structure should be treated as opaque outside selection.c
-   (it's defined here to accelerate selection_defined(s) for reduced
-   impact on redraw code) */
-
-struct selection
-{
+struct selection {
 	struct content *c;
 	struct box *root;
 
@@ -57,19 +51,19 @@ struct selection
 	seln_drag_state drag_state;
 };
 
+/**
+ * determine if a selecion is active
+ */
+bool selection_active(struct selection *s);
 
-/* bool selection_defined(struct selection *s); */
-#define selection_defined(s) ((s)->defined)
+bool selection_dragging(struct selection *s);
 
-/* bool selection_dragging(struct selection *s); */
-#define selection_dragging(s) ((s)->drag_state != DRAG_NONE)
+bool selection_dragging_start(struct selection *s);
 
-/* bool selection_dragging_start(struct selection *s); */
-#define selection_dragging_start(s) ((s)->drag_state == DRAG_START)
-
-/** Handles completion of a drag operation */
-/* void selection_drag_end(struct selection *s); */
-#define selection_drag_end(s) ((s)->drag_state = DRAG_NONE)
+/**
+ * Handles completion of a drag operation
+ */
+void selection_drag_end(struct selection *s);
 
 /**
  * Creates a new selection object associated with a browser window.
@@ -129,8 +123,9 @@ void selection_reinit(struct selection *s);
  * \param s selection object
  * \param redraw true iff the previously selected region of the browser
  *                window should be redrawn
+ * \return true if selection was cleared false if not
  */
-void selection_clear(struct selection *s, bool redraw);
+bool selection_clear(struct selection *s, bool redraw);
 
 /**
  * Selects all the text within the box subtree controlled by