/*
 * e-html-editor-view.h
 *
 * Copyright (C) 2012 Dan Vrátil <dvratil@redhat.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * This program 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 */

#if !defined (__E_UTIL_H_INSIDE__) && !defined (LIBEUTIL_COMPILATION)
#error "Only <e-util/e-util.h> should be included directly."
#endif

#ifndef E_HTML_EDITOR_VIEW_H
#define E_HTML_EDITOR_VIEW_H

#include <webkit/webkit.h>

#include <camel/camel.h>

#include <e-util/e-html-editor-selection.h>
#include <e-util/e-emoticon.h>
#include <e-util/e-spell-checker.h>
#include <e-util/e-util-enums.h>

/* Standard GObject macros */
#define E_TYPE_HTML_EDITOR_VIEW \
	(e_html_editor_view_get_type ())
#define E_HTML_EDITOR_VIEW(obj) \
	(G_TYPE_CHECK_INSTANCE_CAST \
	((obj), E_TYPE_HTML_EDITOR_VIEW, EHTMLEditorView))
#define E_HTML_EDITOR_VIEW_CLASS(cls) \
	(G_TYPE_CHECK_CLASS_CAST \
	((cls), E_TYPE_HTML_EDITOR_VIEW, EHTMLEditorViewClass))
#define E_IS_HTML_EDITOR_VIEW(obj) \
	(G_TYPE_CHECK_INSTANCE_TYPE \
	((obj), E_TYPE_HTML_EDITOR_VIEW))
#define E_IS_HTML_EDITOR_VIEW_CLASS(cls) \
	(G_TYPE_CHECK_CLASS_TYPE \
	((cls), E_TYPE_HTML_EDITOR_VIEW))
#define E_HTML_EDITOR_VIEW_GET_CLASS(obj) \
	(G_TYPE_INSTANCE_GET_CLASS \
	((obj), E_TYPE_HTML_EDITOR_VIEW, EHTMLEditorViewClass))

#define UNICODE_ZERO_WIDTH_SPACE "\xe2\x80\x8b"
#define UNICODE_NBSP "\xc2\xa0"

#define SPACES_PER_INDENTATION 3
#define SPACES_PER_LIST_LEVEL 3
#define SPACES_ORDERED_LIST_FIRST_LEVEL 6
#define MINIMAL_PARAGRAPH_WIDTH 5
#define TAB_LENGTH 8

G_BEGIN_DECLS

typedef struct _EHTMLEditorView EHTMLEditorView;
typedef struct _EHTMLEditorViewClass EHTMLEditorViewClass;
typedef struct _EHTMLEditorViewPrivate EHTMLEditorViewPrivate;

struct _EHTMLEditorView {
	WebKitWebView parent;
	EHTMLEditorViewPrivate *priv;
};

struct _EHTMLEditorViewClass {
	WebKitWebViewClass parent_class;

	void		(*paste_clipboard_quoted)
						(EHTMLEditorView *view);
	gboolean	(*popup_event)		(EHTMLEditorView *view,
						 GdkEventButton *event);
	void		(*paste_primary_clipboard)
						(EHTMLEditorView *view);
};

enum EHTMLEditorViewHistoryEventType {
	HISTORY_ALIGNMENT,
	HISTORY_AND,
	HISTORY_BLOCK_FORMAT,
	HISTORY_BLOCKQUOTE,
	HISTORY_BOLD,
	HISTORY_CELL_DIALOG,
	HISTORY_DELETE, /* BackSpace, Delete, with and without selection */
	HISTORY_FONT_COLOR,
	HISTORY_FONT_SIZE,
	HISTORY_HRULE_DIALOG,
	HISTORY_INDENT,
	HISTORY_INPUT,
	HISTORY_IMAGE,
	HISTORY_IMAGE_DIALOG,
	HISTORY_INSERT_HTML,
	HISTORY_ITALIC,
	HISTORY_LINK_DIALOG,
	HISTORY_MONOSPACE,
	HISTORY_PAGE_DIALOG,
	HISTORY_PASTE,
	HISTORY_PASTE_AS_TEXT,
	HISTORY_PASTE_QUOTED,
	HISTORY_REMOVE_LINK,
	HISTORY_REPLACE,
	HISTORY_REPLACE_ALL,
	HISTORY_CITATION_SPLIT,
	HISTORY_SMILEY,
	HISTORY_START, /* Start of history */
	HISTORY_STRIKETHROUGH,
	HISTORY_TABLE_DIALOG,
	HISTORY_TABLE_INPUT,
	HISTORY_UNDERLINE,
	HISTORY_WRAP,
	HISTORY_UNQUOTE
};

typedef struct {
	gint from; /* From what format we are changing. */
	gint to; /* To what format we are changing. */
} EHTMLEditorViewStyleChange;

/* This is used for e-html-editor-*-dialogs */
typedef struct {
	WebKitDOMNode *from; /* From what node we are changing. */
	WebKitDOMNode *to; /* To what node we are changing. */
} EHTMLEditorViewDOMChange;

typedef struct {
	gchar *from; /* From what format we are changing. */
	gchar *to; /* To what format we are changing. */
} EHTMLEditorViewStringChange;

typedef struct {
	guint x;
	guint y;
} EHTMLEditorViewSelectionPoint;

typedef struct {
	EHTMLEditorViewSelectionPoint start;
	EHTMLEditorViewSelectionPoint end;
} EHTMLEditorViewSelection;

typedef struct {
	enum EHTMLEditorViewHistoryEventType type;
	EHTMLEditorViewSelection before;
	EHTMLEditorViewSelection after;
	union {
		WebKitDOMDocumentFragment *fragment;
		EHTMLEditorViewStyleChange style;
		EHTMLEditorViewStringChange string;
		EHTMLEditorViewDOMChange dom;
	} data;
} EHTMLEditorViewHistoryEvent;

GType		e_html_editor_view_get_type	(void) G_GNUC_CONST;
EHTMLEditorView *
		e_html_editor_view_new		(void);
EHTMLEditorSelection *
		e_html_editor_view_get_selection
						(EHTMLEditorView *view);
gboolean	e_html_editor_view_exec_command	(EHTMLEditorView *view,
						 EHTMLEditorViewCommand command,
						 const gchar *value);
gboolean	e_html_editor_view_get_changed	(EHTMLEditorView *view);
void		e_html_editor_view_set_changed	(EHTMLEditorView *view,
						 gboolean changed);
gboolean	e_html_editor_view_get_html_mode
						(EHTMLEditorView *view);
void		e_html_editor_view_set_html_mode
						(EHTMLEditorView *view,
						 gboolean html_mode);
void		e_html_editor_view_save_history_for_drop
						(EHTMLEditorView *view);
gboolean	e_html_editor_view_get_inline_spelling
						(EHTMLEditorView *view);
void		e_html_editor_view_set_inline_spelling
						(EHTMLEditorView *view,
						 gboolean inline_spelling);
gboolean	e_html_editor_view_get_magic_links
						(EHTMLEditorView *view);
void		e_html_editor_view_set_magic_links
						(EHTMLEditorView *view,
						 gboolean magic_links);
void		e_html_editor_view_insert_smiley
						(EHTMLEditorView *view,
						 EEmoticon *emoticon);
gboolean	e_html_editor_view_get_magic_smileys
						(EHTMLEditorView *view);
void		e_html_editor_view_set_magic_smileys
						(EHTMLEditorView *view,
						 gboolean magic_smileys);
gboolean	e_html_editor_view_get_unicode_smileys
						(EHTMLEditorView *view);
void		e_html_editor_view_set_unicode_smileys
						(EHTMLEditorView *view,
						 gboolean unicode_smileys);
ESpellChecker *	e_html_editor_view_get_spell_checker
						(EHTMLEditorView *view);
gchar *		e_html_editor_view_get_text_html
						(EHTMLEditorView *view,
						 const gchar *from_domain,
						 GList **inline_images);
gchar *		e_html_editor_view_get_text_html_for_drafts
						(EHTMLEditorView *view);
gchar *		e_html_editor_view_get_text_plain
						(EHTMLEditorView *view);
void		e_html_editor_view_convert_and_insert_plain_text
						(EHTMLEditorView *view,
						 const gchar *text);
void		e_html_editor_view_convert_and_insert_html_to_plain_text
						(EHTMLEditorView *view,
						 const gchar *html);
void		e_html_editor_view_set_text_html
						(EHTMLEditorView *view,
						 const gchar *text);
void		e_html_editor_view_set_text_plain
						(EHTMLEditorView *view,
						 const gchar *text);
void		e_html_editor_view_paste_as_text
						(EHTMLEditorView *view);
void		e_html_editor_view_paste_clipboard_quoted
						(EHTMLEditorView *view);
void		e_html_editor_view_embed_styles	(EHTMLEditorView *view);
void		e_html_editor_view_remove_embed_styles
						(EHTMLEditorView *view);
void		e_html_editor_view_update_fonts	(EHTMLEditorView *view);
void		e_html_editor_view_check_magic_links
						(EHTMLEditorView *view,
						 gboolean while_typing);
WebKitDOMElement *
		e_html_editor_view_quote_plain_text_element
						(EHTMLEditorView *view,
                                                 WebKitDOMElement *element);
WebKitDOMElement *
		e_html_editor_view_quote_plain_text
						(EHTMLEditorView *view);
void		e_html_editor_view_dequote_plain_text
						(EHTMLEditorView *view);
void		e_html_editor_view_turn_spell_check_off
						(EHTMLEditorView *view);
void		e_html_editor_view_force_spell_check_for_current_paragraph
						(EHTMLEditorView *view);
void		e_html_editor_view_force_spell_check
						(EHTMLEditorView *view);
void		e_html_editor_view_force_spell_check_in_viewport
						(EHTMLEditorView *view);
void		e_html_editor_view_quote_plain_text_element_after_wrapping
						(WebKitDOMDocument *document,
						 WebKitDOMElement *element,
						 gint quote_level);
void		e_html_editor_view_add_inline_image_from_mime_part
						(EHTMLEditorView *view,
                                                 CamelMimePart *part);
void		remove_image_attributes_from_element
						(WebKitDOMElement *element);
gboolean	e_html_editor_view_is_message_from_draft
						(EHTMLEditorView *view);
void		e_html_editor_view_set_is_editting_message
						(EHTMLEditorView *view,
						 gboolean value);
void		e_html_editor_view_set_is_message_from_draft
						(EHTMLEditorView *view,
						 gboolean value);
void		e_html_editor_view_set_is_message_from_selection
						(EHTMLEditorView *view,
						 gboolean value);
gboolean	e_html_editor_view_is_message_from_edit_as_new
						(EHTMLEditorView *view);
void		e_html_editor_view_set_is_message_from_edit_as_new
						(EHTMLEditorView *view,
						 gboolean value);
void		e_html_editor_view_insert_quoted_text
						(EHTMLEditorView *view,
						 const gchar *text);
void		e_html_editor_view_set_link_color
						(EHTMLEditorView *view,
						 GdkRGBA *color);
void		e_html_editor_view_set_visited_link_color
						(EHTMLEditorView *view,
						 GdkRGBA *color);
void		e_html_editor_view_fix_file_uri_images
						(EHTMLEditorView *view);
gboolean	e_html_editor_view_can_undo 	(EHTMLEditorView *view);
void		e_html_editor_view_undo 	(EHTMLEditorView *view);
gboolean	e_html_editor_view_can_redo 	(EHTMLEditorView *view);
void		e_html_editor_view_redo 	(EHTMLEditorView *view);
void		e_html_editor_view_insert_new_history_event
						(EHTMLEditorView *view,
						 EHTMLEditorViewHistoryEvent *event);
void		e_html_editor_view_clear_history
						(EHTMLEditorView *view);
gboolean	e_html_editor_view_is_undo_redo_in_progress
						(EHTMLEditorView *view);
void		e_html_editor_view_set_undo_redo_in_progress
						(EHTMLEditorView *view,
						 gboolean value);
void		e_html_editor_view_block_style_updated_callbacks
						(EHTMLEditorView *view);
void		e_html_editor_view_unblock_style_updated_callbacks
						(EHTMLEditorView *view);
gboolean	e_html_editor_view_is_pasting_content_from_itself
						(EHTMLEditorView *view);
void		e_html_editor_view_remove_input_event_listener_from_body
						(EHTMLEditorView *view);
void		e_html_editor_view_register_input_event_listener_on_body
						(EHTMLEditorView *view);
G_END_DECLS

#endif /* E_HTML_EDITOR_VIEW_H */