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/*********
*
* This file is part of BibleTime's source code, http://www.bibletime.info/.
*
* Copyright 1999-2008 by the BibleTime developers.
* The BibleTime source code is licensed under the GNU General Public License version 2.0.
*
**********/
#include "cbooktreechooser.h"
#include "bthistory.h"
#include "backend/keys/cswordtreekey.h"
#include "backend/drivers/cswordbookmoduleinfo.h"
#include "backend/config/cbtconfig.h"
#include <QHBoxLayout>
#include <QTreeWidget>
#include <QTreeWidgetItem>
#include <QHeaderView>
#include <QApplication>
#include <QDebug>
CBookTreeChooser::CBookTreeChooser(QList<CSwordModuleInfo*> modules, CSwordKey *key, QWidget *parent)
: CKeyChooser(modules, key, parent),
m_key( dynamic_cast<CSwordTreeKey*>(key) ) {
setModules(modules, false);
//if there is no module there is no key either
if (!modules.count()) {
m_modules.clear();
m_key = 0;
}
//now setup the keychooser widgets
m_treeView = new QTreeWidget(this);
QHBoxLayout* layout = new QHBoxLayout(this);
layout->setSpacing(0);
layout->setContentsMargins(0, 0, 0, 0);
layout->addWidget(m_treeView);
m_treeView->header()->hide();
//when user selects the item whe must react
connect(m_treeView, SIGNAL(currentItemChanged ( QTreeWidgetItem*, QTreeWidgetItem*)), SLOT(itemActivated(QTreeWidgetItem*)));
setKey(key);
adjustFont();
connect(this, SIGNAL(keyChanged(CSwordKey*)), history(), SLOT(add(CSwordKey*)) );
}
CBookTreeChooser::~CBookTreeChooser() {}
/** Sets a new key to this keychooser. Inherited from ckeychooser. */
void CBookTreeChooser::setKey(CSwordKey* key) {
setKey(key, false);
}
/** Sets a new key to this keychooser. Inherited from ckeychooser. */
void CBookTreeChooser::setKey(CSwordKey* newKey, const bool emitSignal) {
qDebug("CBookTreeChooser::setKey");
if (m_key != newKey ) {
m_key = dynamic_cast<CSwordTreeKey*>(newKey);
}
const QString key = m_key->key(); //key as text, path
QTreeWidgetItem* matching_item = m_treeView->topLevelItem(0);
QTreeWidgetItemIterator it(m_treeView);
while (*it) {
if ((*it)->text(1) == key) {
matching_item = (*it);
break;
}
++it;
}
m_treeView->setCurrentItem( matching_item );
m_treeView->scrollToItem(matching_item);
if (emitSignal) {
emit keyChanged(m_key);
}
}
/** Returns the key of this keychooser. Inherited from ckeychooser.*/
CSwordKey* CBookTreeChooser::key() {
return m_key;
}
/** Sets another module to this keychooser. Inherited from ckeychooser (therefore
the list of modules instead of one). */
void CBookTreeChooser::setModules(const QList<CSwordModuleInfo*>& modules, const bool refresh) {
//Add given modules into private list
m_modules.clear();
QList<CSwordModuleInfo*>::const_iterator end_it = modules.end();
for (QList<CSwordModuleInfo*>::const_iterator it(modules.begin()); it != end_it; ++it) {
if (CSwordBookModuleInfo* book = dynamic_cast<CSwordBookModuleInfo*>(*it)) {
m_modules.append(book);
}
}
//if there exists a module and a key, setup the visible tree
if (refresh && m_modules.count() && m_key) {
const uint offset = m_key->getOffset(); //actually unnecessary, taken care of in setupTree
setupTree();
m_key->setOffset( offset );
adjustFont(); //only when refresh is set.
}
}
/** From ckeychooser. */
void CBookTreeChooser::adjustFont() {
//Make sure the entries are displayed correctly.
m_treeView->setFont( CBTConfig::get(m_modules.first()->language()).second );
}
/** Refreshes the content. Inherited from ckeychooser. */
void CBookTreeChooser::refreshContent() {
if (m_key) {
updateKey(m_key); //refresh with current key
}
}
//TODO: itemActivated is called too many times. As tested in GDB, the function
//is called twice with the pointer to the correct book and twice with a null
//pointer.
/** Slot for signal when item is selected by user. */
void CBookTreeChooser::itemActivated( QTreeWidgetItem* item ) {
qDebug("CBookTreeChooser::itemActivated");
//Sometimes Qt calls this function with a null pointer.
if (item) {
m_key->key(item->text(1));
//tell possible listeners about the change
emit keyChanged(m_key);
}
}
/** Inherited from ckeychooser */
void CBookTreeChooser::updateKey( CSwordKey* key ) {
setKey(key, false);
}
/** Reimplementation to handle tree creation on show. */
void CBookTreeChooser::show() {
CKeyChooser::show();
if (!m_treeView->topLevelItemCount()) {
QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
setupTree(); //create the tree structure
m_treeView->resize(m_treeView->sizeHint());
QApplication::restoreOverrideCursor();
}
}
/** Creates the tree structure in the view. */
void CBookTreeChooser::setupTree() {
m_treeView->clear();
const unsigned long offset = m_key->getOffset();
m_key->root();
addKeyChildren(m_key, m_treeView->invisibleRootItem());
m_key->setOffset( offset );
setKey(m_key, false); //the module may have changed
}
/** Populates tree widget with items. */
void CBookTreeChooser::addKeyChildren(CSwordTreeKey* key, QTreeWidgetItem* item) {
if (key->hasChildren()) {
key->firstChild();
do {
QStringList columns;
columns << key->getLocalNameUnicode() << key->key();
QTreeWidgetItem *i = new QTreeWidgetItem(item, columns, QTreeWidgetItem::Type);
i->setData(0, Qt::ToolTipRole, key->getLocalNameUnicode());
int offset = key->getOffset();
addKeyChildren(key, i);
key->setOffset(offset);
}
while (key->nextSibling());
}
}
void CBookTreeChooser::setKey(QString& newKey) {
m_key->key(newKey);
setKey(m_key);
}
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