allow stopping indexing through menu action

src/qtgui/idxthread.cpp

@@ -27,6 +27,12 @@
 #include "smallut.h"
 #include "rclinit.h"
 
+int stopindexing;
+int startindexing;
+IdxThreadStatus indexingstatus = IDXTS_OK;
+string indexingReason;
+static int stopidxthread;
+
 static QMutex curfile_mutex;
 
 class IdxThread : public QThread , public DbIxStatusUpdater {
@@ -38,22 +44,17 @@ class IdxThread : public QThread , public DbIxStatusUpdater {
 	LOGDEB1(("IdxThread::update: indexing %s\n", m_statusSnap.fn.c_str()));
 	if (stopindexing) {
 	    stopindexing = 0;
+	    m_interrupted = true;
 	    return false;
 	}
 	return true;
     }
     // Maintain a copy/snapshot of idx status
     DbIxStatus m_statusSnap;
+    bool m_interrupted;
     const RclConfig *cnf;
 };
 
-int stopindexing;
-int startindexing;
-int indexingdone = 1;
-IdxThreadStatus indexingstatus = IDXTS_NULL;
-string indexingReason;
-static int stopidxthread;
-
 void IdxThread::run()
 {
     recoll_threadinit();
@@ -63,7 +64,7 @@ void IdxThread::run()
 	}
 	if (startindexing) {
 	    startindexing = 0;
-	    indexingdone = 0;
+	    m_interrupted = false;
 	    indexingstatus = IDXTS_NULL;
 	    // We have to make a copy of the config (setKeydir changes
 	    // it during indexation)
@@ -80,7 +81,6 @@ void IdxThread::run()
 		indexingstatus = IDXTS_ERROR;
 		indexingReason = "Indexing failed: " + indexer->getReason();
 	    }
-	    indexingdone = 1;
 	    delete indexer;
 	} 
 	msleep(100);
@@ -105,5 +105,9 @@ void stop_idxthread()
 DbIxStatus idxthread_idxStatus()
 {
     QMutexLocker locker(&curfile_mutex);
-    return(idxthread.m_statusSnap);
+    return idxthread.m_statusSnap;
+}
+bool idxthread_idxInterrupted()
+{
+    return idxthread.m_interrupted;
 }

src/qtgui/idxthread.h

@@ -16,23 +16,28 @@
  */
 #ifndef _IDXTHREAD_H_INCLUDED_
 #define _IDXTHREAD_H_INCLUDED_
-/* @(#$Id: idxthread.h,v 1.6 2006-04-12 10:41:39 dockes Exp $  (C) 2004 J.F.Dockes */
+/* @(#$Id: idxthread.h,v 1.7 2008-01-17 11:15:43 dockes Exp $  (C) 2004 J.F.Dockes */
 #include <string>
 #include "indexer.h"
 
 class RclConfig;
 
-// These two deal with starting / stopping the thread itself, not indexing
-// sessions.
+// These two deal with starting / stopping the thread itself, not
+// indexing sessions.
 extern void start_idxthread(const RclConfig& cnf);
 extern void stop_idxthread();
-extern DbIxStatus idxthread_idxStatus();
 
+// Set these to to request action
 extern int stopindexing;
 extern int startindexing;
-extern int indexingdone;
+
+// indexingstatus is NULL iff indexing is currently in progress.
 enum IdxThreadStatus {IDXTS_NULL = 0, IDXTS_OK = 1, IDXTS_ERROR = 2};
 extern IdxThreadStatus indexingstatus;
+// Final indexing status message
 extern string indexingReason;
-
+// Current status of running indexing (phase, file name etc.)
+extern DbIxStatus idxthread_idxStatus();
+// Did last op fail because of stop request ?
+extern bool idxthread_idxInterrupted(); 
 #endif /* _IDXTHREAD_H_INCLUDED_ */

src/qtgui/rclmain.ui

@@ -76,7 +76,7 @@
         <cstring>MenuBar</cstring>
     </property>
     <item text="&amp;File" name="fileMenu">
-        <action name="fileStart_IndexingAction"/>
+        <action name="fileToggleIndexingAction"/>
         <separator/>
         <action name="fileEraseDocHistoryAction"/>
         <separator/>
@@ -174,7 +174,7 @@
     </action>
     <action>
         <property name="name">
-            <cstring>fileStart_IndexingAction</cstring>
+            <cstring>fileToggleIndexingAction</cstring>
         </property>
         <property name="menuText">
             <string>Update &amp;index</string>

src/qtgui/rclmain_w.cpp

@@ -1,5 +1,5 @@
 #ifndef lint
-static char rcsid[] = "@(#$Id: rclmain_w.cpp,v 1.46 2007-12-04 10:17:14 dockes Exp $ (C) 2005 J.F.Dockes";
+static char rcsid[] = "@(#$Id: rclmain_w.cpp,v 1.47 2008-01-17 11:15:43 dockes Exp $ (C) 2005 J.F.Dockes";
 #endif
 /*
  *   This program is free software; you can redistribute it and/or modify
@@ -103,6 +103,8 @@ void RclMain::init()
     indexConfig = 0;
     spellform = 0;
     m_searchId = 0;
+    m_idxStatusAck = false;
+
     // Set the focus to the search terms entry:
     sSearch->queryText->setFocus();
 
@@ -180,8 +182,8 @@ void RclMain::init()
 	    this, SLOT(startPreview(Rcl::Doc)));
 
     connect(fileExitAction, SIGNAL(activated() ), this, SLOT(fileExit() ) );
-    connect(fileStart_IndexingAction, SIGNAL(activated()), 
-	    this, SLOT(startIndexing()));
+    connect(fileToggleIndexingAction, SIGNAL(activated()), 
+	    this, SLOT(toggleIndexing()));
     connect(fileEraseDocHistoryAction, SIGNAL(activated()), 
 	    this, SLOT(eraseDocHistory()));
     connect(helpAbout_RecollAction, SIGNAL(activated()), 
@@ -336,18 +338,29 @@ void RclMain::periodic100()
     static int toggle = 0;
     // Check if indexing thread done
     if (indexingstatus != IDXTS_NULL) {
+	// Indexing is stopped
 	statusBar()->message("");
-	if (indexingstatus != IDXTS_OK) {
-	    indexingstatus = IDXTS_NULL;
-	    QMessageBox::warning(0, "Recoll", 
-				 QString::fromAscii(indexingReason.c_str()));
+	fileToggleIndexingAction->setText(tr("Update &Index"));
+	fileToggleIndexingAction->setEnabled(TRUE);
+	if (m_idxStatusAck == false) {
+	    m_idxStatusAck = true;
+	    if (indexingstatus != IDXTS_OK) {
+		if (idxthread_idxInterrupted()) {
+		    QMessageBox::warning(0, "Recoll", 
+					 tr("Indexing interrupted"));
+		} else {
+		    QMessageBox::warning(0, "Recoll", 
+					 QString::fromAscii(indexingReason.c_str()));
+		}
+	    }
+	    // Make sure we reopen the db to get the results.
+	    rcldb->close();
 	}
-	indexingstatus = IDXTS_NULL;
-	fileStart_IndexingAction->setEnabled(TRUE);
-	// Make sure we reopen the db to get the results.
-	LOGINFO(("Indexing done: closing query database\n"));
-	rcldb->close();
-    } else if (indexingdone == 0) {
+    } else {
+	// Indexing is running
+	m_idxStatusAck = false;
+	fileToggleIndexingAction->setText(tr("Stop &Indexing"));
+	// The toggle thing is for the status to flash
 	if (toggle == 0) {
 	    QString msg = tr("Indexing in progress: ");
 	    DbIxStatus status = idxthread_idxStatus();
@@ -385,11 +398,17 @@ void RclMain::periodic100()
 	fileExit();
 }
 
-void RclMain::startIndexing()
+void RclMain::toggleIndexing()
 {
-    if (indexingdone)
+    if (indexingstatus == IDXTS_NULL) {
+	// Indexing in progress
+	stopindexing = 1;
+	fileToggleIndexingAction->setText(tr("Update &Index"));
+    } else {
 	startindexing = 1;
-    fileStart_IndexingAction->setEnabled(FALSE);
+	fileToggleIndexingAction->setText(tr("Stop &Indexing"));
+    }
+    fileToggleIndexingAction->setEnabled(FALSE);
 }
 
 // Note that all our 'urls' are like : file://...
@@ -405,7 +424,7 @@ void RclMain::startSearch(RefCntr<Rcl::SearchData> sdata)
     // The db may have been closed at the end of indexing
     string reason;
     // If indexing is being performed, we reopen the db at each query.
-    if (!maybeOpenDb(reason, indexingdone == 0)) {
+    if (!maybeOpenDb(reason, indexingstatus == IDXTS_NULL)) {
 	QMessageBox::critical(0, "Recoll", QString(reason.c_str()));
 	return;
     }

src/qtgui/rclmain_w.h

@@ -75,7 +75,7 @@ public slots:
     virtual bool close();
     virtual void fileExit();
     virtual void periodic100();
-    virtual void startIndexing();
+    virtual void toggleIndexing();
     virtual void startSearch(RefCntr<Rcl::SearchData> sdata);
     virtual void setDocSequence();
     virtual void previewClosed(Preview *w);
@@ -133,6 +133,7 @@ private:
     map<QString, int>        m_stemLangToId;
     int                      m_idNoStem;
     int                      m_idAllStem;
+    bool                     m_idxStatusAck; // Did we act on last status?
 
     virtual void init();
     virtual void previewPrevOrNextInTab(Preview *, int sid, int docnum,