/*
*
* 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/>
*
*
* Authors:
* Michael Zucchi <notzed@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
/*
Concrete class for formatting mails to html
*/
#ifndef EM_FORMAT_HTML_H
#define EM_FORMAT_HTML_H
#include <mail/em-format.h>
#include <mail/mail-config.h>
#include <camel/camel-medium.h>
#include <camel/camel-mime-part.h>
#include <camel/camel-stream.h>
#include <camel/camel-url.h>
#include <gtkhtml/gtkhtml.h>
#include <gtkhtml/gtkhtml-embedded.h>
/* Standard GObject macros */
#define EM_TYPE_FORMAT_HTML \
(em_format_html_get_type ())
#define EM_FORMAT_HTML(obj) \
(G_TYPE_CHECK_INSTANCE_CAST \
((obj), EM_TYPE_FORMAT_HTML, EMFormatHTML))
#define EM_FORMAT_HTML_CLASS(cls) \
(G_TYPE_CHECK_CLASS_CAST \
((cls), EM_TYPE_FORMAT_HTML, EMFormatHTMLClass))
#define EM_IS_FORMAT_HTML(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE \
((obj), EM_TYPE_FORMAT_HTML))
#define EM_IS_FORMAT_HTML_CLASS(cls) \
(G_TYPE_CHECK_CLASS_TYPE \
((cls), EM_TYPE_FORMAT_HTML))
#define EM_FORMAT_HTML_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS \
((obj), EM_TYPE_FORMAT_HTML, EMFormatHTMLClass))
G_BEGIN_DECLS
typedef struct _EMFormatHTML EMFormatHTML;
typedef struct _EMFormatHTMLClass EMFormatHTMLClass;
typedef struct _EMFormatHTMLPrivate EMFormatHTMLPrivate;
enum _em_format_html_header_flags {
EM_FORMAT_HTML_HEADER_TO = 1<<0,
EM_FORMAT_HTML_HEADER_CC = 1<<1,
EM_FORMAT_HTML_HEADER_BCC = 1<<2
};
typedef enum {
EM_FORMAT_HTML_STATE_NONE = 0,
EM_FORMAT_HTML_STATE_RENDERING
} EMFormatHTMLState;
/* A HTMLJob will be executed in another thread, in sequence.
It's job is to write to its stream, close it if successful,
then exit. */
typedef struct _EMFormatHTMLJob EMFormatHTMLJob;
/**
* struct _EMFormatHTMLJob - A formatting job.
*
* @next: Double linked list header.
* @prev: Double linked list header.
* @format: Set by allocation function.
* @stream: Free for use by caller.
* @puri_level: Set by allocation function.
* @base: Set by allocation function, used to save state.
* @callback: This callback will always be invoked, only once, even if the user
* cancelled the display. So the callback should free any extra data
* it allocated every time it is called.
* @u: Union data, free for caller to use.
*
* This object is used to queue a long-running-task which cannot be
* processed in the primary thread. When its turn comes, the job will
* be de-queued and the @callback invoked to perform its processing,
* restoring various state to match the original state. This is used
* for image loading and other internal tasks.
*
* This object is struct-subclassable. Only em_format_html_job_new()
* may be used to allocate these.
**/
struct _EMFormatHTMLJob {
EMFormatHTMLJob *next;
EMFormatHTMLJob *prev;
EMFormatHTML *format;
CamelStream *stream;
/* We need to track the state of the visibility tree at
the point this uri was generated */
struct _EMFormatPURITree *puri_level;
CamelURL *base;
void (*callback)(EMFormatHTMLJob *job, int cancelled);
union {
char *uri;
CamelMedium *msg;
EMFormatPURI *puri;
struct _EMFormatPURITree *puri_level;
void *data;
} u;
};
/* Pending object (classid: url) */
typedef struct _EMFormatHTMLPObject EMFormatHTMLPObject;
typedef gboolean (*EMFormatHTMLPObjectFunc)(EMFormatHTML *md, GtkHTMLEmbedded *eb, EMFormatHTMLPObject *pobject);
/**
* struct _EMFormatHTMLPObject - Pending object.
*
* @next: Double linked list header.
* @prev: Double linked list header.
* @free: Invoked when the object is no longer needed.
* @format: The parent formatter.
* @classid: The assigned class id as passed to add_pobject().
* @func: Callback function.
* @part: The part as passed to add_pobject().
*
* This structure is used to track OBJECT tags which have been
* inserted into the HTML stream. When GtkHTML requests them the
* @func will be invoked to create the embedded widget.
*
* This object is struct-subclassable. Only
* em_format_html_add_pobject() may be used to allocate these.
**/
struct _EMFormatHTMLPObject {
EMFormatHTMLPObject *next;
EMFormatHTMLPObject *prev;
void (*free)(EMFormatHTMLPObject *);
EMFormatHTML *format;
char *classid;
EMFormatHTMLPObjectFunc func;
CamelMimePart *part;
};
#define EM_FORMAT_HTML_HEADER_NOCOLUMNS (EM_FORMAT_HEADER_LAST)
#define EM_FORMAT_HTML_HEADER_HTML (EM_FORMAT_HEADER_LAST<<1) /* header already in html format */
#define EM_FORMAT_HTML_HEADER_NODEC (EM_FORMAT_HEADER_LAST<<2) /* header already in html format */
#define EM_FORMAT_HTML_HEADER_LAST (EM_FORMAT_HEADER_LAST<<8)
#define EM_FORMAT_HTML_VPAD "<table cellspacing=0 cellpadding=3><tr><td><a name=\"padding\"></a></td></tr></table>\n"
/**
* struct _EMFormatHTML - HTML formatter object.
*
* @format:
* @priv:
* @html:
* @pending_object_list:
* @headers:
* @text_html_flags:
* @body_colour:
* @header_colour:
* @text_colour:
* @frame_colour:
* @content_colour:
* @citation_colour:
* @load_http:2:
* @load_http_now:1:
* @mark_citations:1:
* @simple_headers:1:
* @hide_headers:1:
* @show_icon:1:
*
* Most of these fields are private or read-only.
*
* The base HTML formatter object. This object drives HTML generation
* into a GtkHTML parser. It also handles text to HTML conversion,
* multipart/related objects and inline images.
**/
struct _EMFormatHTML {
EMFormat format;
EMFormatHTMLPrivate *priv;
GtkHTML *html;
EDList pending_object_list;
GSList *headers;
guint32 text_html_flags; /* default flags for text to html conversion */
guint32 body_colour; /* header box colour */
guint32 header_colour;
guint32 text_colour;
guint32 frame_colour;
guint32 content_colour;
guint32 citation_colour;
unsigned int load_http:2;
unsigned int load_http_now:1;
unsigned int mark_citations:1;
unsigned int simple_headers:1; /* simple header format, no box/table */
unsigned int hide_headers:1; /* no headers at all */
unsigned int show_icon:1; /* show an icon when the sender used Evo */
guint32 header_wrap_flags;
EMFormatHTMLState state; /* actual state of the object */
};
struct _EMFormatHTMLClass {
EMFormatClass format_class;
};
GType em_format_html_get_type (void);
EMFormatHTML * em_format_html_new (void);
void em_format_html_load_http (EMFormatHTML *efh);
void em_format_html_set_load_http (EMFormatHTML *efh,
int style);
void em_format_html_set_mark_citations
(EMFormatHTML *efh,
int state,
guint32 citation_colour);
/* retrieves a pseudo-part icon wrapper for a file */
CamelMimePart * em_format_html_file_part (EMFormatHTML *efh,
const gchar *mime_type,
const gchar *filename);
/* for implementers */
EMFormatHTMLPObject *
em_format_html_add_pobject (EMFormatHTML *efh,
size_t size,
const char *classid,
CamelMimePart *part,
EMFormatHTMLPObjectFunc func);
EMFormatHTMLPObject *
em_format_html_find_pobject (EMFormatHTML *efh,
const char *classid);
EMFormatHTMLPObject *
em_format_html_find_pobject_func(EMFormatHTML *efh,
CamelMimePart *part,
EMFormatHTMLPObjectFunc func);
void em_format_html_remove_pobject (EMFormatHTML *efh,
EMFormatHTMLPObject *pobject);
void em_format_html_clear_pobject (EMFormatHTML *efh);
EMFormatHTMLJob *
em_format_html_job_new (EMFormatHTML *efh,
void (*callback)(EMFormatHTMLJob *job, int cancelled),
void *data);
void em_format_html_job_queue (EMFormatHTML *efh,
EMFormatHTMLJob *job);
G_END_DECLS
#endif /* EM_FORMAT_HTML_H */
