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Diffstat (limited to 'src/queryviewdriver.cpp')
| -rw-r--r-- | src/queryviewdriver.cpp | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/src/queryviewdriver.cpp b/src/queryviewdriver.cpp new file mode 100644 index 0000000..f04c44d --- /dev/null +++ b/src/queryviewdriver.cpp @@ -0,0 +1,180 @@ +/*************************************************************************** + * + * Copyright (C) 2005 Elad Lahav ([email protected]) + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ***************************************************************************/ + +#include <klocale.h> +#include "queryviewdriver.h" +#include "queryview.h" + +/** + * Class constructor. + * Creates a driver that adds new records as root items in the given view. + * @param pView The view to which this driver should add records + * @param pParent The parent object of the driver + * @param szName The name of the object + */ +QueryViewDriver::QueryViewDriver(QueryView* pView, QObject* pParent, + const char* szName) : QObject(pParent, szName), + m_pView(pView), + m_pItem(NULL), + m_progress(pView), + m_bRunning(false) +{ + m_pCscope = new CscopeFrontend(); + + // Add records to the page when Cscope outputs them + connect(m_pCscope, SIGNAL(dataReady(FrontendToken*)), this, + SLOT(slotDataReady(FrontendToken*))); + + // Report progress information + connect(m_pCscope, SIGNAL(progress(int, int)), this, + SLOT(slotProgress(int, int))); + + // Perform tasks when the query process terminates + connect(m_pCscope, SIGNAL(finished(uint)), this, + SLOT(slotFinished(uint))); + + connect(m_pView, SIGNAL(destroyed()), this, SLOT(slotViewClosed())); +} + +/** + * Class destructor. + */ +QueryViewDriver::~QueryViewDriver() +{ + delete m_pCscope; +} + +/** + * Executes a query. + * @param nType The type of the query (@see CscopeFrontend) + * @param sText The query's text + * @param bCase true for case-sensitive queries, false otherwise + * @param pItem If non-null, represents an view item passed back to + * the view in a call to addRecord() + */ +void QueryViewDriver::query(uint nType, const QString& sText, bool bCase, + QListViewItem* pItem) +{ + m_pItem = pItem; + + // Make sure sorting is disabled while entries are added + m_pView->setSorting(100); + + // Execute the query + m_pCscope->query(nType, sText, bCase); + m_bRunning = true; + m_pView->setEnabled(false); + m_pView->setUpdatesEnabled(false); +} + +/** + * Adds a query entry to the view. + * Called by a CscopeFrontend object, when a new entry was received in its + * whole from the Cscope back-end process. + * @param pToken The first token in the entry + */ +void QueryViewDriver::slotDataReady(FrontendToken* pToken) +{ + QString sFile, sFunc, sLine, sText; + + // Get the file name + sFile = pToken->getData(); + pToken = pToken->getNext(); + + // Get the function name + sFunc = pToken->getData(); + pToken = pToken->getNext(); + + // Get the line number + sLine = pToken->getData(); + if (!sLine.toInt()) { + // Line number could not be 0! + // means that function name was empty + sLine = sFunc; + sFunc = "<global>"; + } + else { + pToken = pToken->getNext(); + } + + // Get the line's text + sText = pToken->getData(); + pToken = pToken->getNext(); + + // Add a new item at the end of the list + m_pView->addRecord(sFunc, sFile, sLine, sText, m_pItem); +} + +/** + * Handles a finished query event, reported by the Cscope frontend object. + * If no resutls are available, a proper message is displayed. If only one + * record was generated by Cscope, it is automatically selected for viewing. + * @param nRecords The number of records the query has generated + */ +void QueryViewDriver::slotFinished(uint nRecords) +{ + // The query is no longer running + m_bRunning = false; + m_pView->setEnabled(true); + m_pView->setUpdatesEnabled(true); + m_pView->triggerUpdate(); + + // Destroy the progress bar + m_progress.finished(); + + // Let owner widget decide what to do based on the number of records + m_pView->queryFinished(nRecords, m_pItem); +} + +/** + * Displays search progress information. + * This slot is connected to the progress() signal emitted by a + * CscopeFrontend object. + * @param nFiles The number of files scanned + * @param nTotal The total number of files in the project + */ +void QueryViewDriver::slotProgress(int nFiles, int nTotal) +{ + // A progress report is available, instruct the owner object to show the + // view + if (nTotal > 1) + m_pView->queryProgress(); + + // Set the progress bar + m_progress.setProgress(nFiles, nTotal); +} + +/** + * Called when the owner view is destroyed. + */ +void QueryViewDriver::slotViewClosed() +{ + m_pView = NULL; + m_pCscope->kill(); +} + +#include "queryviewdriver.moc" |