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/*
* File: plain.cc
*
* Copyright (C) 2005-2007 Jorge Arellano Cid <jcid@dillo.org>
*
* This program 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; either version 3 of the License, or
* (at your option) any later version.
*/
/*
* Module for decoding a text/plain object into a dw widget.
*/
#include <string.h> /* for memcpy and memmove */
#include <math.h> /* for rint() */
#include "msg.h"
#include "prefs.h"
#include "cache.h"
#include "bw.h"
#include "web.hh"
#include "misc.h"
#include "history.h"
#include "nav.h"
#include "menu.hh"
#include "uicmd.hh"
#include "dw/core.hh"
#include "dw/textblock.hh"
// Dw to Textblock
#define DW2TB(dw) ((Textblock*)dw)
using namespace dw;
using namespace dw::core;
class DilloPlain {
private:
class PlainEventReceiver: public dw::core::Widget::EventReceiver {
public:
DilloPlain *plain;
bool buttonPress(dw::core::Widget *widget, dw::core::EventButton *event);
};
PlainEventReceiver plainReceiver;
public:
BrowserWindow *bw;
DilloUrl *url;
Widget *dw;
style::Style *widgetStyle;
size_t Start_Ofs; /* Offset of where to start reading next */
int state;
DilloPlain(BrowserWindow *bw, const DilloUrl *url);
~DilloPlain();
void write(void *Buf, uint_t BufSize, int Eof);
};
/* FSM states */
enum {
ST_SeekingEol,
ST_Eol,
ST_Eof
};
/*
* Exported function with C linkage.
*/
extern "C" {
void *a_Plain_text(const char *type, void *P, CA_Callback_t *Call,void **Data);
}
/*
* Forward declarations
*/
static void Plain_callback(int Op, CacheClient_t *Client);
void a_Plain_free(void *data);
/*
* Diplain constructor.
*/
DilloPlain::DilloPlain(BrowserWindow *p_bw, const DilloUrl *p_url)
{
style::StyleAttrs styleAttrs;
style::FontAttrs fontAttrs;
/* Init event receiver */
plainReceiver.plain = this;
/* Init internal variables */
bw = p_bw;
url = a_Url_dup(p_url);
dw = new Textblock (false);
Start_Ofs = 0;
state = ST_SeekingEol;
/* Create the font and attribute for the page. */
fontAttrs.name = prefs.fw_fontname;
fontAttrs.size = (int) rint(12.0 * prefs.font_factor);
fontAttrs.weight = 400;
fontAttrs.style = style::FONT_STYLE_NORMAL;
Layout *layout = (Layout*)bw->render_layout;
styleAttrs.initValues ();
styleAttrs.margin.setVal (5);
styleAttrs.font = style::Font::create (layout, &fontAttrs);
styleAttrs.color = style::Color::createSimple (layout, prefs.text_color);
styleAttrs.backgroundColor =
style::Color::createSimple (layout, prefs.bg_color);
widgetStyle = style::Style::create (layout, &styleAttrs);
/* The context menu */
DW2TB(dw)->connectEvent (&plainReceiver);
/* Hook destructor to the dw delete call */
dw->setDeleteCallback(a_Plain_free, this);
}
/*
* Free memory used by the DilloPlain class.
*/
DilloPlain::~DilloPlain()
{
MSG("::~DilloPlain()\n");
a_Url_free(url);
widgetStyle->unref();
}
/*
* Receive the mouse button press event
*/
bool DilloPlain::PlainEventReceiver::buttonPress (Widget *widget,
EventButton *event)
{
_MSG("DilloPlain::PlainEventReceiver::buttonPress\n");
if (event->button == 3) {
a_UIcmd_page_popup(plain->bw, plain->url, NULL);
return true;
}
return false;
}
/*
* Here we parse plain text and put it into the page structure.
* (This function is called by Plain_callback whenever there's new data)
*/
void DilloPlain::write(void *Buf, uint_t BufSize, int Eof)
{
char *Start;
char *data;
uint_t i, len, MaxBytes;
Start = (char*)Buf + Start_Ofs;
MaxBytes = BufSize - Start_Ofs;
i = len = 0;
while ( i < MaxBytes ) {
switch ( state ) {
case ST_SeekingEol:
if (Start[i] == '\n' || Start[i] == '\r')
state = ST_Eol;
else {
++i; ++len;
}
break;
case ST_Eol:
data = dStrndup(Start + i - len, len);
DW2TB(dw)->addText(a_Misc_expand_tabs(data), widgetStyle);
DW2TB(dw)->addParbreak(0, widgetStyle);
dFree(data);
if (Start[i] == '\r' && Start[i + 1] == '\n') ++i;
if (i < MaxBytes) ++i;
state = ST_SeekingEol;
len = 0;
break;
}
}
Start_Ofs += i - len;
if (Eof && len) {
data = dStrndup(Start + i - len, len);
DW2TB(dw)->addText(a_Misc_expand_tabs(data), widgetStyle);
DW2TB(dw)->addParbreak(0, widgetStyle);
dFree(data);
Start_Ofs += len;
}
DW2TB(dw)->flush();
if (bw)
a_UIcmd_set_page_prog(bw, Start_Ofs, 1);
}
/*
* Set callback function and callback data for "text/" MIME major-type.
*/
void *a_Plain_text(const char *type, void *P, CA_Callback_t *Call, void **Data)
{
DilloWeb *web = (DilloWeb*)P;
DilloPlain *plain = new DilloPlain(web->bw, web->url);
*Call = (CA_Callback_t)Plain_callback;
*Data = (void*)plain;
return (void*)plain->dw;
}
void a_Plain_free(void *data)
{
MSG("a_Plain_free! %p\n", data);
delete ((DilloPlain *)data);
}
/*
* This function is a cache client
*/
static void Plain_callback(int Op, CacheClient_t *Client)
{
DilloPlain *plain = (DilloPlain*)Client->CbData;
if (Op) {
/* Do the last line: */
if (plain->Start_Ofs < Client->BufSize)
plain->write(Client->Buf, Client->BufSize, 1);
/* remove this client from our active list */
a_Bw_close_client(plain->bw, Client->Key);
/* set progress bar insensitive */
a_UIcmd_set_page_prog(plain->bw, 0, 0);
} else {
plain->write(Client->Buf, Client->BufSize, 0);
}
}
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