Source file: src/mailing_viewer.cpp
/* Copyright (C) 2004-2011 Daniel Verite
This file is part of Manitou-Mail (see http://www.manitou-mail.org)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include "main.h"
#include "mailing.h"
#include "mail_template.h"
#include "text_merger.h"
#include "mail_displayer.h"
#include "mailing_viewer.h"
#include "icons.h"
#include <QWebPage>
#include <QWebFrame>
#include <QWebView>
#include <QRadioButton>
#include <QLabel>
#include <QPushButton>
#include <QLineEdit>
#include <QUrl>
#include <QMessageBox>
#include <QHBoxLayout>
#include <QFontMetrics>
mailing_viewer::mailing_viewer(QWidget* parent, Qt::WindowFlags f) : QWidget(parent,f)
{
m_options=NULL;
setWindowTitle(tr("Mailing preview"));
QVBoxLayout* top_layout = new QVBoxLayout(this);
QHBoxLayout* btn_layout = new QHBoxLayout;
btn_layout->addWidget(new QLabel(tr("Show part:")));
m_rb_text = new QRadioButton(tr("Plain text"));
m_rb_html = new QRadioButton(tr("Rich text (HTML)"));
connect(m_rb_text, SIGNAL(clicked()), this, SLOT(to_plain_text()));
connect(m_rb_html, SIGNAL(clicked()), this, SLOT(to_html()));
m_btn_prev = new QPushButton(UI_ICON(FT_ICON16_ARROW_LEFT), "");
m_btn_prev->setToolTip(tr("Previous message"));
m_btn_next = new QPushButton(UI_ICON(FT_ICON16_ARROW_RIGHT), "");
m_btn_next->setToolTip(tr("Next message"));
connect(m_btn_prev, SIGNAL(clicked()), this, SLOT(prev_message()));
connect(m_btn_next, SIGNAL(clicked()), this, SLOT(next_message()));
m_number = new QLineEdit;
m_number->setToolTip(tr("Enter the message number and press return"));
connect(m_number, SIGNAL(returnPressed()), SLOT(goto_message()));
m_label_count = new QLabel;
btn_layout->addWidget(m_rb_text);
btn_layout->addWidget(m_rb_html);
btn_layout->addStretch(1);
btn_layout->addWidget(m_btn_prev);
btn_layout->addWidget(m_number);
btn_layout->addWidget(m_label_count);
btn_layout->addWidget(m_btn_next);
top_layout->addLayout(btn_layout);
m_webview = new QWebView();
connect(m_webview, SIGNAL(loadFinished(bool)), this, SLOT(load_finished(bool)));
top_layout->addWidget(m_webview);
QHBoxLayout* btn2_layout = new QHBoxLayout;
m_btn_close = new QPushButton(tr("Close"));
btn2_layout->addStretch(1);
btn2_layout->addWidget(m_btn_close);
btn2_layout->addStretch(1);
connect(m_btn_close, SIGNAL(clicked()), this, SLOT(close()));
top_layout->addLayout(btn2_layout);
}
mailing_viewer::~mailing_viewer()
{
if (m_options_owned && m_options)
delete m_options;
}
void
mailing_viewer::load_finished(bool ok)
{
Q_UNUSED(ok);
prepend_body_fragment(htmlize_header(m_current_header));
}
void
mailing_viewer::prepend_body_fragment(const QString& fragment)
{
QWebPage* page = m_webview->page();
page->settings()->setAttribute(QWebSettings::JavascriptEnabled, true);
QString s = fragment;
s.replace("'", "\\'");
QString js = QString("try {var b=document.getElementsByTagName('body')[0]; var p=document.createElement('div'); p.innerHTML='%1'; p.style.marginBottom='12px'; b.insertBefore(p, b.firstChild); 1;} catch(e) { e; }").arg(s);
QVariant v = page->mainFrame()->evaluateJavaScript(js);
page->settings()->setAttribute(QWebSettings::JavascriptEnabled, false);
}
QString
mailing_viewer::htmlize_header(const QString h)
{
uint npos=0;
uint nend=h.length();
QString output;
// show all headers
while (npos<nend) {
int nposeh=0; // end of header name
// position of end of current line
int nposlf=h.indexOf('\n',npos);
if (nposlf==-1)
nposlf=nend;
if (h.mid(npos,1)!=" " && h.mid(npos,1)!="\t" && (nposeh=h.indexOf(':',npos))>0)
{
QString c=h.mid(nposeh+1, nposlf-nposeh-1);
c.replace("&", "&");
c.replace("<", "<");
c.replace(">", ">");
c.replace ("\t", " ");
output.append(QString("<font color=\"blue\">%1</font>%2<br>")
.arg(h.mid(npos,nposeh-npos+1)).arg(c));
}
else {
output.append(h.mid(npos,nposlf-npos+1));
output.append("<br>");
}
npos=nposlf+1;
}
output.append("<hr>");
return output;
}
/*
mailing_options:
QString title;
QString sender_email;
QStringList mail_addresses;
QStringList field_names;
int mail_format;
// double throughput; // LATER
QString header;
QString text_part;
QString html_part;
*/
void
mailing_viewer::show_merge()
{
bool merged=false;
int data_idx=m_current_index;
mailing_options* opt = m_options;
if (data_idx >= opt->mail_addresses.size()) {
data_idx = opt->mail_addresses.size()-1;
}
if (data_idx < 0)
return;
if (!opt->csv_data.isEmpty()) {
text_merger tm;
try {
tm.init(opt->field_names, ',');
// reinsert the recipient email address as the variable at index 0
QStringList vars = opt->csv_data.at(data_idx);
vars.insert(0, opt->mail_addresses.at(data_idx));
// merge
m_current_text = tm.merge_template(opt->text_part, vars);
m_current_html = tm.merge_template(opt->html_part, vars);
/* filter out cr and lf from values to merge into the header since
line breaks are not supported in headers */
QStringList vars_headers;
for (int i=0; i<vars.size(); i++) {
QString v=vars[i].replace("\r\n", "\n");
v=v.replace('\r', '\n');
v=v.replace('\n', ' ');
vars_headers.append(v);
}
m_current_header = tm.merge_template(opt->header, vars_headers);
merged=true;
}
catch(...) {
merged=false;
}
}
if (!merged) {
m_current_text = opt->text_part;
m_current_html = opt->html_part;
m_current_header = opt->header;
}
m_current_header.append(QString("\nTo: %1\n").arg(opt->mail_addresses.at(data_idx)));
if (!m_current_text.isEmpty()) {
m_current_text.replace("&", "&");
m_current_text.replace(">", ">");
m_current_text.replace("<", "<");
m_current_text.replace("\n", "<br>");
}
if (m_rb_html->isChecked()) {
m_webview->setHtml(m_current_html, QUrl("/"));
}
else {
m_webview->setHtml(m_current_text, QUrl("/"));
}
// m_current_header is added dynamically at the start of <body> in
// load_finished()
show();
}
void
mailing_viewer::to_html()
{
m_webview->setHtml(m_current_html, QUrl("/"));
}
void
mailing_viewer::to_plain_text()
{
m_webview->setHtml(m_current_text, QUrl("/"));
}
void
mailing_viewer::next_message()
{
if (m_options!=NULL && m_current_index < m_options->mail_addresses.size()-1) {
m_current_index++;
show_number(m_current_index+1);
show_merge();
}
}
void
mailing_viewer::prev_message()
{
if (m_options!=NULL && m_current_index>0) {
m_current_index--;
show_number(m_current_index+1);
show_merge();
}
}
void
mailing_viewer::show_number(int number)
{
m_number->setText(QString("%1").arg(number));
}
void
mailing_viewer::goto_message()
{
bool ok;
int new_index = m_number->text().toInt(&ok);
if (!ok) {
QMessageBox::critical(this, tr("Error"), tr("Unrecognized number"));
show_number(m_current_index+1);
return;
}
new_index--;
if (m_options!=NULL && (new_index<0 || new_index>=m_options->mail_addresses.size())) {
QMessageBox::critical(this, tr("Error"), tr("The message number must be between 1 and %1").arg(m_options->mail_addresses.size()));
return;
}
m_current_index = new_index;
show_merge();
}
void
mailing_viewer::set_data(mailing_options& opt)
{
m_options = &opt;
m_options_owned = false;
init();
}
void
mailing_viewer::init()
{
QString max_nb = QString("%1").arg(m_options->mail_addresses.size());
QFontMetrics fm(m_number->font());
m_number->setMaximumWidth(fm.width(max_nb)+15);
m_label_count->setText(QString("/%1").arg(m_options->mail_addresses.size()));
if (!m_options->html_part.isEmpty()) {
m_rb_html->setChecked(true);
m_rb_html->setEnabled(true);
}
else {
m_rb_html->setEnabled(false);
m_rb_text->setChecked(true);
}
if (!m_options->text_part.isEmpty()) {
m_rb_text->setEnabled(true);
}
else
m_rb_text->setEnabled(false);
m_current_index=0;
show_number(1);
}
/* View a mailing that is already stored inside the database
(as opposed to a preview) */
void
mailing_viewer::show_merge_existing(mailing_db* m)
{
m_options = new mailing_options;
if (!m_options)
return;
m_options_owned = true;
if (!m->load_definition(m_options))
return;
try {
m->load_data(m_options);
}
catch (QString errmsg) {
QMessageBox::critical(this, tr("Error"), tr("An error has occurred when fetching the mailing data:\n%1").arg(errmsg));
}
init();
show_merge();
}
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