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qgsattributetabledisplay.cpp
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qgsattributetabledisplay.cpp
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/***************************************************************************
QgsAttributeTableDisplay.cpp - description
-------------------
begin : Sat Nov 23 2002
copyright : (C) 2002 by Gary E.Sherman
email : sherman at mrcc dot com
Romans 3:23=>Romans 6:23=>Romans 5:8=>Romans 10:9,10=>Romans 12
***************************************************************************/
/***************************************************************************
* *
* 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 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
/* $Id$ */
#include "qgsattributetabledisplay.h"
#include "qgisapp.h"
#include "qgsapplication.h"
#include "qgsaddattrdialog.h"
#include "qgsdelattrdialog.h"
#include "qgsfeature.h"
#include "qgsfield.h"
#include "qgslogger.h"
#include "qgssearchquerybuilder.h"
#include "qgssearchstring.h"
#include "qgssearchtreenode.h"
#include "qgsvectorlayer.h"
#include "qgsvectordataprovider.h"
#include "qgscontexthelp.h"
#include <QMessageBox>
#include <QIcon>
#include <QPixmap>
#include <QToolButton>
QgsAttributeTableDisplay::QgsAttributeTableDisplay(QgsVectorLayer* layer, QgisApp * qgisApp)
: QDialog(0, Qt::Window),
mLayer(layer),
mQgisApp(qgisApp)
{
setupUi(this);
setTheme();
connect(mRemoveSelectionButton, SIGNAL(clicked()), this, SLOT(removeSelection()));
connect(mSelectedToTopButton, SIGNAL(clicked()), this, SLOT(selectedToTop()));
connect(mInvertSelectionButton, SIGNAL(clicked()), this, SLOT(invertSelection()));
connect(mCopySelectedRowsButton, SIGNAL(clicked()), this, SLOT(copySelectedRowsToClipboard()));
connect(mAddAttributeButton, SIGNAL(clicked()), this, SLOT(addAttribute()));
connect(mDeleteAttributeButton, SIGNAL(clicked()), this, SLOT(deleteAttributes()));
connect(btnStartEditing, SIGNAL(clicked()), this, SLOT(startEditing()));
connect(btnStopEditing, SIGNAL(clicked()), this, SLOT(stopEditing()));
connect(mSearchButton, SIGNAL(clicked()), this, SLOT(search()));
connect(mSearchShowResults, SIGNAL(activated(int)), this, SLOT(searchShowResultsChanged(int)));
connect(btnAdvancedSearch, SIGNAL(clicked()), this, SLOT(advancedSearch()));
connect(btnClose, SIGNAL(clicked()), this, SLOT(close()));
btnStopEditing->setEnabled(false);
int cap=layer->getDataProvider()->capabilities();
if((cap&QgsVectorDataProvider::ChangeAttributeValues)
||(cap&QgsVectorDataProvider::AddAttributes)
||(cap&QgsVectorDataProvider::DeleteAttributes))
{
btnStartEditing->setEnabled(true);
}
else
{
btnStartEditing->setEnabled(false);
}
// fill in mSearchColumns with available columns
QgsVectorDataProvider* provider = mLayer->getDataProvider();
if (provider)
{
const QgsFieldMap& fields = provider->fields();
int fieldcount = provider->fieldCount();
for (int h = 0; h < fieldcount; h++)
{
mSearchColumns->insertItem(fields[h].name());
}
}
// TODO: create better labels
mSearchShowResults->insertItem(tr("select"));
mSearchShowResults->insertItem(tr("select and bring to top"));
mSearchShowResults->insertItem(tr("show only matching"));
}
QgsAttributeTableDisplay::~QgsAttributeTableDisplay()
{
}
QgsAttributeTable *QgsAttributeTableDisplay::table()
{
return tblAttributes;
}
void QgsAttributeTableDisplay::setTheme()
{
QString myIconPath = QgsApplication::themePath();
mAddAttributeButton->setPixmap(QPixmap(myIconPath+"/mActionNewAttribute.png"));
mRemoveSelectionButton->setPixmap(QPixmap(myIconPath+"/mActionUnselectAttributes.png"));
mSelectedToTopButton->setPixmap(QPixmap(myIconPath+"/mActionSelectedToTop.png"));
mInvertSelectionButton->setPixmap(QPixmap(myIconPath+"/mActionInvertSelection.png"));
mCopySelectedRowsButton->setPixmap(QPixmap(myIconPath+"/mActionCopySelected.png"));
mAddAttributeButton->setPixmap(QPixmap(myIconPath+"/mActionNewAttribute.png"));
mDeleteAttributeButton->setPixmap(QPixmap(myIconPath+"/mActionDeleteAttribute.png"));
}
void QgsAttributeTableDisplay::setTitle(QString title)
{
setCaption(title);
}
void QgsAttributeTableDisplay::deleteAttributes()
{
QgsDelAttrDialog dialog(table()->horizontalHeader());
if(dialog.exec()==QDialog::Accepted)
{
const std::list<QString>* attlist=dialog.selectedAttributes();
for(std::list<QString>::const_iterator iter=attlist->begin();iter!=attlist->end();++iter)
{
table()->deleteAttribute(*iter);
}
}
}
void QgsAttributeTableDisplay::addAttribute()
{
QgsAddAttrDialog dialog(mLayer->getDataProvider(), this);
if(dialog.exec()==QDialog::Accepted)
{
if(!table()->addAttribute(dialog.name(),dialog.type()))
{
QMessageBox::information(0,"Name conflict","The attribute could not be inserted. The name already exists in the table",QMessageBox::Ok);
}
}
}
void QgsAttributeTableDisplay::startEditing()
{
QgsVectorDataProvider* provider=mLayer->getDataProvider();
bool editing=false;
if(provider)
{
if(provider->capabilities()&QgsVectorDataProvider::AddAttributes)
{
mAddAttributeButton->setEnabled(true);
editing=true;
}
if(provider->capabilities()&QgsVectorDataProvider::DeleteAttributes)
{
mDeleteAttributeButton->setEnabled(true);
editing=true;
}
if(provider->capabilities()&QgsVectorDataProvider::ChangeAttributeValues)
{
table()->setReadOnly(false);
table()->setColumnReadOnly(0,true);//id column is not editable
editing=true;
}
if(editing)
{
btnStartEditing->setEnabled(false);
btnStopEditing->setEnabled(true);
btnClose->setEnabled(false);
//make the dialog modal when in editable
//otherwise map editing and table editing
//may disturb each other
hide();
setModal(true);
show();
}
}
}
void QgsAttributeTableDisplay::stopEditing()
{
if(table()->edited())
{
//commit or roll back?
int commit=QMessageBox::information(0,"Stop editing","Do you want to save the changes?",QMessageBox::Yes,QMessageBox::No);
if(commit==QMessageBox::Yes)
{
if(!table()->commitChanges(mLayer))
{
QMessageBox::information(0,"Error","Could not commit changes",QMessageBox::Ok);
}
}
else
{
table()->rollBack(mLayer);
}
}
btnStartEditing->setEnabled(true);
btnStopEditing->setEnabled(false);
btnClose->setEnabled(true);
mAddAttributeButton->setEnabled(false);
mDeleteAttributeButton->setEnabled(false);
table()->setReadOnly(true);
//make this dialog modeless again
hide();
setModal(false);
show();
}
void QgsAttributeTableDisplay::selectedToTop()
{
table()->bringSelectedToTop();
}
void QgsAttributeTableDisplay::invertSelection()
{
if(mLayer)
{
QApplication::setOverrideCursor(Qt::waitCursor);
mLayer->invertSelection();
QApplication::restoreOverrideCursor();
}
}
void QgsAttributeTableDisplay::removeSelection()
{
mLayer->removeSelection();
table()->clearSelection();
mLayer->triggerRepaint();
}
void QgsAttributeTableDisplay::copySelectedRowsToClipboard()
{
// Deprecated
// table()->copySelectedRows();
// Use the Application's copy method instead
mQgisApp->editCopy(mLayer);
}
void QgsAttributeTableDisplay::search()
{
// if selected field is numeric, numeric comparison will be used
// else attributes containing entered text will be matched
QgsVectorDataProvider* provider = mLayer->getDataProvider();
int item = mSearchColumns->currentItem();
bool numeric = provider->fields()[item].isNumeric();
QString str;
str = mSearchColumns->currentText();
if (numeric)
str += " = '";
else
str += " ~ '";
str += mSearchText->text();
str += "'";
doSearch(str);
}
void QgsAttributeTableDisplay::advancedSearch()
{
QgsSearchQueryBuilder dlg(mLayer, this);
dlg.setSearchString(mSearchString);
if (dlg.exec())
{
doSearch(dlg.searchString());
}
}
void QgsAttributeTableDisplay::searchShowResultsChanged(int item)
{
QApplication::setOverrideCursor(Qt::waitCursor);
if (item == 2) // show only matching
{
table()->showRowsWithId(mSearchIds);
}
else
{
// make sure that all rows are shown
table()->showAllRows();
// select matching
mLayer->setSelectedFeatures(mSearchIds);
if (item == 1) // select matching and bring to top
table()->bringSelectedToTop();
}
QApplication::restoreOverrideCursor();
}
void QgsAttributeTableDisplay::doSearch(const QString& searchString)
{
mSearchString = searchString;
// parse search string (and build parsed tree)
QgsSearchString search;
if (!search.setString(searchString))
{
QMessageBox::critical(this, tr("Search string parsing error"), search.parserErrorMsg());
return;
}
QgsSearchTreeNode* searchTree = search.tree();
if (searchTree == NULL)
{
QMessageBox::information(this, tr("Search results"), tr("You've supplied an empty search string."));
return;
}
QgsDebugMsg("Search by attribute: " + searchString + " parsed as: " + search.tree()->makeSearchString());
QApplication::setOverrideCursor(Qt::waitCursor);
// TODO: need optimized getNextFeature which won't extract geometry
// or search by traversing table ... which one is quicker?
QgsFeature fet;
QgsVectorDataProvider* provider = mLayer->getDataProvider();
provider->reset();
mSearchIds.clear();
QgsAttributeList all = provider->allAttributesList();
while (provider->getNextFeature(fet, false, all))
{
if (searchTree->checkAgainst(fet.attributeMap()))
{
mSearchIds.insert(fet.featureId());
}
// check if there were errors during evaulating
if (searchTree->hasError())
break;
}
provider->reset();
QApplication::restoreOverrideCursor();
if (searchTree->hasError())
{
QMessageBox::critical(this, tr("Error during search"), searchTree->errorMsg());
return;
}
// update table
searchShowResultsChanged(mSearchShowResults->currentItem());
QString str;
if (mSearchIds.size())
str.sprintf(tr("Found %d matching features."), mSearchIds.size());
else
str = tr("No matching features found.");
QMessageBox::information(this, tr("Search results"), str);
}
void QgsAttributeTableDisplay::closeEvent(QCloseEvent* ev)
{
ev->ignore();
emit deleted();
delete this;
}
void QgsAttributeTableDisplay::on_btnHelp_clicked()
{
showHelp();
}
void QgsAttributeTableDisplay::showHelp()
{
QgsContextHelp::run(context_id);
}