Add first pass at new treeview.

Only supports creation, destruction, and redraw atm.
TODO: input handling (mouse, keyboard), editing, using the node callbacks.

Also includes new core_window.h.

desktop/core_window.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2012 Michael Drake <tlsa@netsurf-browser.org>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** \file
+ * Core window handling (interface).
+ */
+
+#ifndef _NETSURF_DESKTOP_CORE_WINDOW_H_
+#define _NETSURF_DESKTOP_CORE_WINDOW_H_
+
+#include "utils/types.h"
+
+struct core_window;
+
+/** Callbacks to achieve various core window functionality. */
+struct core_window_callback_table {
+	/** Request a redraw of the window. */
+	void (*redraw_request)(struct core_window *cw, struct rect r);
+
+	/** Update the limits of the window */
+	void (*update_size)(struct core_window *cw, int width, int height);
+
+	/** Scroll the window to make area visible */
+	void (*scroll_visible)(struct core_window *cw, struct rect r);
+
+	/** Get window viewport dimensions */
+	void (*get_window_dimensions)(struct core_window *cw,
+			int *width, int *height);
+};
+
+
+void core_window_draw(struct core_window *cw, int x, int y, struct rect r,
+		const struct redraw_context *ctx);
+
+
+#endif

desktop/treeview.h

@@ -0,0 +1,123 @@
+/*
+ * Copyright 2012 - 2013 Michael Drake <tlsa@netsurf-browser.org>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** \file
+ * Treeview handling (interface).
+ */
+
+#ifndef _NETSURF_DESKTOP_TREEVIEW_H_
+#define _NETSURF_DESKTOP_TREEVIEW_H_
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "desktop/core_window.h"
+#include "utils/types.h"
+
+struct treeview;
+struct treeview_node;
+
+enum treeview_relationship {
+	TREE_REL_CHILD,
+	TREE_REL_SIBLING_NEXT
+};
+
+enum treeview_msg {
+	TREE_MSG_NODE_DELETE,
+	TREE_MSG_FIELD_EDIT
+};
+struct treeview_node_msg {
+	enum treeview_msg msg; /**< The message type */
+	union {
+		struct {
+			struct treeview_node *node;
+		} node_delete;
+		struct {
+			struct treeview_node *node;
+			lwc_string *feild;
+			const char *text;
+		} field_edit;
+	} data; /**< The message data. */
+};
+
+enum treeview_field_flags {
+	TREE_FLAG_NONE		= 0,		/**< No flags set */
+	TREE_FLAG_ALLOW_EDIT	= (1 << 0),	/**< Whether allow edit field */
+	TREE_FLAG_DEFAULT	= (1 << 1),	/**< Whether field is default */
+	TREE_FLAG_SHOW_NAME	= (1 << 2)	/**< Whether field name shown */
+
+};
+struct treeview_field_desc {
+	lwc_string *field;
+	enum treeview_field_flags flags;
+};
+
+struct treeview_field_data {
+	lwc_string *field;
+	const char *value;
+	size_t value_len;
+};
+
+
+struct treeview_callback_table {
+	nserror (*folder)(struct treeview_node_msg msg, void *data);
+	nserror (*entry)(struct treeview_node_msg msg, void *data);
+};
+
+nserror treeview_init(void);
+nserror treeview_fini(void);
+
+nserror treeview_create(struct treeview **tree,
+		const struct treeview_callback_table *callbacks,
+		int n_fields, struct treeview_field_desc fields[],
+		const struct core_window_callback_table *cw_t,
+		const struct core_window *cw);
+
+nserror treeview_destroy(struct treeview *tree);
+
+nserror treeview_create_node_folder(struct treeview *tree,
+		struct treeview_node **folder,
+		struct treeview_node *relation,
+		enum treeview_relationship rel,
+		const struct treeview_field_data *field,
+		void *data);
+nserror treeview_create_node_entry(struct treeview *tree,
+		struct treeview_node **entry,
+		struct treeview_node *relation, 
+		enum treeview_relationship rel,
+		const struct treeview_field_data fields[],
+		void *data);
+
+nserror treeview_update_node_entry(struct treeview *tree,
+		struct treeview_node *entry,
+		const struct treeview_field_data fields[],
+		void *data);
+
+nserror treeview_delete_node(struct treeview_node *n);
+
+nserror treeview_node_expand(struct treeview *tree,
+		struct treeview_node *node);
+nserror treeview_node_contract(struct treeview *tree,
+		struct treeview_node *node);
+
+void treeview_redraw(struct treeview *tree, int x, int y, struct rect *clip,
+		const struct redraw_context *ctx);
+
+struct treeview_node * treeview_get_root(struct treeview *tree);
+
+#endif