mirror of
https://github.com/netsurf-browser/netsurf
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199 lines
7.2 KiB
C
199 lines
7.2 KiB
C
/*
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* Copyright 2004 Richard Wilson <not_ginger_matt@users.sourceforge.net>
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* Copyright 2009 Paul Blokus <paul_pl@users.sourceforge.net>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* Generic tree handling (interface).
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*/
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#ifndef _NETSURF_DESKTOP_TREE_H_
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#define _NETSURF_DESKTOP_TREE_H_
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#include <stdbool.h>
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#include <stdint.h>
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#include "desktop/browser.h"
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#include "image/bitmap.h"
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struct hlcache_handle;
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/* Tree flags */
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enum tree_flags {
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TREE_NO_FLAGS = 0,
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TREE_NO_DRAGS = 1,
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TREE_NO_FURNITURE = 2,
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TREE_SINGLE_SELECT = 4,
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TREE_NO_SELECT = 8,
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TREE_MOVABLE = 16,
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TREE_DELETE_EMPTY_DIRS = 32, /**< if the last child of a
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* directory is deleted the
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* directory will be deleted
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* too.
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*/
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};
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/** A "flag" value to indicate the element data contains title
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* text. This value should be the first node_element in every
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* node. All other values should be different than this one. The term
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* flag is misused as it is actually a value used by the API consumer
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* to indicate teh type of data a node element contains.
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*/
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#define TREE_ELEMENT_TITLE 0x00
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struct tree;
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struct node;
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struct node_element;
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typedef enum {
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TREE_NO_DRAG = 0,
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TREE_SELECT_DRAG,
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TREE_MOVE_DRAG,
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TREE_TEXTAREA_DRAG, /** < A drag that is passed to a textarea */
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TREE_UNKNOWN_DRAG /** < A drag the tree itself won't handle */
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} tree_drag_type;
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typedef enum {
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NODE_ELEMENT_TEXT, /**< Text only */
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NODE_ELEMENT_TEXT_PLUS_ICON, /**< Text and icon */
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NODE_ELEMENT_BITMAP /**< Bitmap only */
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} node_element_type;
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typedef enum {
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NODE_DELETE_ELEMENT_TXT, /**< The text of an element of the
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* node is being deleted */
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NODE_DELETE_ELEMENT_IMG, /**< The bitmap or icon of a node is
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* being deleted */
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NODE_LAUNCH, /**< The node has been launched */
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NODE_ELEMENT_EDIT_CANCELLED, /**< Editing opperation cancelled. */
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NODE_ELEMENT_EDIT_FINISHING, /**< New text has to be accepted
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* or rejected. */
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NODE_ELEMENT_EDIT_FINISHED /**< Editing of a node_element has
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* been finished. */
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} node_msg;
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typedef enum {
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NODE_CALLBACK_HANDLED,
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NODE_CALLBACK_NOT_HANDLED,
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NODE_CALLBACK_REJECT, /**< reject new text for node element
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* and leave editing mode. */
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NODE_CALLBACK_CONTINUE /**< don't leave editig mode. */
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} node_callback_resp;
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/** Internal node message. */
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struct node_msg_data {
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node_msg msg; /**< The type of message. */
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unsigned int flag; /**< message flags. */
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struct node *node; /**< tree node messsage concerns. */
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union {
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char *text; /**< textural data. */
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void *bitmap; /**< bitmap data. */
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} data; /**< The message data. */
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};
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/** callbacks to perform necessary operations on treeview. */
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struct treeview_table {
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void (*redraw_request)(int x, int y, int width, int height,
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void *data); /**< request a redraw. */
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void (*resized)(struct tree *tree, int width, int height,
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void *data); /**< resize treeview area. */
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void (*scroll_visible)(int y, int height, void *data); /**< scroll visible treeview area. */
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void (*get_window_dimensions)(int *width, int *height, void *data); /**< get dimensions of window */
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};
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/**
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* Informs the client about any events requiring his action
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*
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* \param user_data the user data which was passed at tree creation
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* \param msg_data structure containing all the message information
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* \return the appropriate node_callback_resp response
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*/
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typedef node_callback_resp (*tree_node_user_callback)(void *user_data,
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struct node_msg_data *msg_data);
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/* Non-platform specific code */
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/* Functions for creating/deleting tree primitives and for tree structure
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manipulation */
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struct tree *tree_create(unsigned int flags,
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const struct treeview_table *callbacks,
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void *client_data);
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struct node *tree_create_folder_node(struct tree *tree, struct node *parent,
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const char *title, bool editable, bool retain_in_memory,
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bool deleted);
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struct node *tree_create_leaf_node(struct tree *tree, struct node *parent,
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const char *title, bool editable, bool retain_in_memory,
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bool deleted);
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struct node_element *tree_create_node_element(struct node *parent,
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node_element_type type, unsigned int flag, bool editable);
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void tree_link_node(struct tree *tree, struct node *link, struct node *node,
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bool before);
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void tree_delink_node(struct tree *tree, struct node *node);
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void tree_delete(struct tree *tree);
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void tree_delete_node(struct tree *tree, struct node *node, bool siblings);
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/* setters and getters for properties and data */
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void tree_set_node_icon(struct tree *tree, struct node *node,
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struct hlcache_handle *icon);
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void tree_set_node_expanded(struct tree *tree, struct node *node, bool expanded,
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bool folder, bool leaf);
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void tree_set_node_selected(struct tree *tree, struct node *node, bool all,
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bool selected);
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void tree_set_node_sort_function(struct tree *tree, struct node *node,
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int (*sort) (struct node *, struct node *));
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void tree_set_node_user_callback(struct node *node,
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tree_node_user_callback callback, void *data);
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void tree_set_redraw(struct tree *tree, bool redraw);
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bool tree_get_redraw(struct tree *tree);
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bool tree_node_has_selection(struct node *node);
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bool tree_node_is_deleted(struct node *node);
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bool tree_node_is_folder(struct node *node);
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void tree_update_node_element(struct tree *tree, struct node_element *element,
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const char *text, void *bitmap);
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bool tree_update_element_text(struct tree *tree, struct node_element *element, char *text);
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const char *tree_node_element_get_text(struct node_element *element);
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struct node *tree_get_root(struct tree *tree);
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bool tree_is_edited(struct tree *tree);
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tree_drag_type tree_drag_status(struct tree *tree);
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/* functions for traversing the tree */
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struct node *tree_node_get_child(struct node *node);
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struct node *tree_node_get_next(struct node *node);
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void tree_draw(struct tree *tree, int x, int y,
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int clip_x, int clip_y, int clip_width, int clip_height);
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struct node_element *tree_node_find_element(struct node *node,
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unsigned int flag, struct node_element *after);
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void tree_delete_selected_nodes(struct tree *tree, struct node *node);
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struct node *tree_get_selected_node(struct node *node);
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struct node *tree_get_link_details(struct tree *tree, int x, int y,
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bool *before);
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void tree_launch_selected(struct tree *tree);
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bool tree_mouse_action(struct tree *tree, browser_mouse_state mouse,
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int x, int y);
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void tree_drag_end(struct tree *tree, browser_mouse_state mouse, int x0, int y0,
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int x1, int y1);
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bool tree_keypress(struct tree *tree, uint32_t key);
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int tree_alphabetical_sort(struct node *, struct node *);
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void tree_start_edit(struct tree *tree, struct node_element *element);
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struct hlcache_handle *tree_load_icon(const char *name);
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#endif
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