- feature: watch external file modifications

- fix: crash when load history file that doesn't exist
 - fix: only highlight fully selected word

RedPandaIDE/RedPandaIDE_zh_CN.ts

@@ -4,17 +4,17 @@
 <context>
     <name>BacktraceModel</name>
     <message>
-        <location filename="debugger.cpp" line="1556"/>
+        <location filename="debugger.cpp" line="1561"/>
         <source>Function</source>
         <translation>函数</translation>
     </message>
     <message>
-        <location filename="debugger.cpp" line="1558"/>
+        <location filename="debugger.cpp" line="1563"/>
         <source>Filename</source>
         <translation>文件名</translation>
     </message>
     <message>
-        <location filename="debugger.cpp" line="1560"/>
+        <location filename="debugger.cpp" line="1565"/>
         <source>Line</source>
         <translation>行</translation>
     </message>
@@ -22,17 +22,17 @@
 <context>
     <name>BreakpointModel</name>
     <message>
-        <location filename="debugger.cpp" line="1462"/>
+        <location filename="debugger.cpp" line="1467"/>
         <source>Filename</source>
         <translation>文件名</translation>
     </message>
     <message>
-        <location filename="debugger.cpp" line="1464"/>
+        <location filename="debugger.cpp" line="1469"/>
         <source>Line</source>
         <translation>行</translation>
     </message>
     <message>
-        <location filename="debugger.cpp" line="1466"/>
+        <location filename="debugger.cpp" line="1471"/>
         <source>Condition</source>
         <translation>条件</translation>
     </message>
@@ -491,27 +491,27 @@ Are you really want to continue?</source>
     </message>
     <message>
         <location filename="debugger.cpp" line="225"/>
-        <location filename="debugger.cpp" line="299"/>
+        <location filename="debugger.cpp" line="304"/>
         <source>Execute to evaluate</source>
         <translation>执行以求值</translation>
     </message>
     <message>
-        <location filename="debugger.cpp" line="297"/>
+        <location filename="debugger.cpp" line="302"/>
         <source>Not found in current context</source>
         <translation>不在当前语境中</translation>
     </message>
     <message>
-        <location filename="debugger.cpp" line="394"/>
+        <location filename="debugger.cpp" line="399"/>
         <source>Compile</source>
         <translation>编译</translation>
     </message>
     <message>
-        <location filename="debugger.cpp" line="395"/>
+        <location filename="debugger.cpp" line="400"/>
         <source>Source file is more recent than executable.</source>
         <translation>源文件比程序文件新。</translation>
     </message>
     <message>
-        <location filename="debugger.cpp" line="395"/>
+        <location filename="debugger.cpp" line="400"/>
         <source>Recompile?</source>
         <translation>重新编译？</translation>
     </message>
@@ -534,11 +534,11 @@ Are you really want to continue?</source>
     <message>
         <location filename="editor.cpp" line="180"/>
         <location filename="editor.cpp" line="192"/>
-        <location filename="editor.cpp" line="224"/>
-        <location filename="editor.cpp" line="792"/>
-        <location filename="editor.cpp" line="797"/>
-        <location filename="editor.cpp" line="815"/>
-        <location filename="editor.cpp" line="820"/>
+        <location filename="editor.cpp" line="227"/>
+        <location filename="editor.cpp" line="807"/>
+        <location filename="editor.cpp" line="812"/>
+        <location filename="editor.cpp" line="830"/>
+        <location filename="editor.cpp" line="835"/>
         <source>Error</source>
         <translation>错误</translation>
     </message>
@@ -553,40 +553,40 @@ Are you really want to continue?</source>
         <translation>另存为</translation>
     </message>
     <message>
-        <location filename="editor.cpp" line="793"/>
+        <location filename="editor.cpp" line="808"/>
         <source>The text to be copied exceeds count limit!</source>
         <translation>要复制的内容超过了行数限制！</translation>
     </message>
     <message>
-        <location filename="editor.cpp" line="798"/>
+        <location filename="editor.cpp" line="813"/>
         <source>The text to be copied exceeds character limit!</source>
         <translation>要复制的内容超过了字符数限制！</translation>
     </message>
     <message>
-        <location filename="editor.cpp" line="816"/>
+        <location filename="editor.cpp" line="831"/>
         <source>The text to be cut exceeds count limit!</source>
         <translation>要剪切的内容超过了行数限制！</translation>
     </message>
     <message>
-        <location filename="editor.cpp" line="821"/>
+        <location filename="editor.cpp" line="836"/>
         <source>The text to be cut exceeds character limit!</source>
         <translation>要剪切的内容超过了字符数限制！</translation>
     </message>
     <message>
-        <location filename="editor.cpp" line="1990"/>
-        <location filename="editor.cpp" line="2027"/>
-        <location filename="editor.cpp" line="2078"/>
+        <location filename="editor.cpp" line="2005"/>
+        <location filename="editor.cpp" line="2042"/>
+        <location filename="editor.cpp" line="2093"/>
         <source>Ctrl+click for more info</source>
         <translation>Ctrl+单击以获取更多信息</translation>
     </message>
     <message>
-        <location filename="editor.cpp" line="2096"/>
-        <location filename="editor.cpp" line="2126"/>
+        <location filename="editor.cpp" line="2111"/>
+        <location filename="editor.cpp" line="2141"/>
         <source>Symbol &apos;%1&apos; not found!</source>
         <translation>未找到符号&apos;%1&apos;!</translation>
     </message>
     <message>
-        <location filename="editor.cpp" line="2636"/>
+        <location filename="editor.cpp" line="2651"/>
         <source>Readonly</source>
         <translation>只读</translation>
     </message>
@@ -1337,7 +1337,7 @@ Are you really want to continue?</source>
     </message>
     <message>
         <location filename="mainwindow.ui" line="267"/>
-        <location filename="mainwindow.cpp" line="1178"/>
+        <location filename="mainwindow.cpp" line="1228"/>
         <source>Issues</source>
         <translation>编译器</translation>
     </message>
@@ -1530,8 +1530,10 @@ Are you really want to continue?</source>
     <message>
         <location filename="mainwindow.ui" line="994"/>
         <location filename="mainwindow.ui" line="997"/>
-        <location filename="mainwindow.cpp" line="790"/>
-        <location filename="mainwindow.cpp" line="801"/>
+        <location filename="mainwindow.cpp" line="804"/>
+        <location filename="mainwindow.cpp" line="815"/>
+        <location filename="mainwindow.cpp" line="1053"/>
+        <location filename="mainwindow.cpp" line="1064"/>
         <source>Compile</source>
         <translation>编译</translation>
     </message>
@@ -1812,6 +1814,21 @@ Are you really want to continue?</source>
         <source>Shift+F3</source>
         <translation>Shift+F3</translation>
     </message>
+    <message>
+        <location filename="mainwindow.ui" line="1350"/>
+        <source>Remove Watch</source>
+        <translation>删除监视</translation>
+    </message>
+    <message>
+        <location filename="mainwindow.ui" line="1355"/>
+        <source>Remove All</source>
+        <translation>清除全部监视</translation>
+    </message>
+    <message>
+        <location filename="mainwindow.ui" line="1360"/>
+        <source>Modify Watch...</source>
+        <translation>修改监视值</translation>
+    </message>
     <message>
         <location filename="mainwindow.cpp" line="81"/>
         <source>File Encoding</source>
@@ -1823,20 +1840,20 @@ Are you really want to continue?</source>
         <translation>文件历史</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="315"/>
-        <location filename="mainwindow.cpp" line="317"/>
+        <location filename="mainwindow.cpp" line="325"/>
+        <location filename="mainwindow.cpp" line="327"/>
         <source>Debugging</source>
         <translation>正在调试</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="320"/>
-        <location filename="mainwindow.cpp" line="322"/>
+        <location filename="mainwindow.cpp" line="330"/>
+        <location filename="mainwindow.cpp" line="332"/>
         <source>Running</source>
         <translation>正在运行</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="325"/>
-        <location filename="mainwindow.cpp" line="327"/>
+        <location filename="mainwindow.cpp" line="335"/>
+        <location filename="mainwindow.cpp" line="337"/>
         <source>Compiling</source>
         <translation>正在编译</translation>
     </message>
@@ -1845,150 +1862,172 @@ Are you really want to continue?</source>
         <translation type="vanished">行:%1    列:%2    已选择:%3    总行数:%4    总长度:%5</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="453"/>
+        <location filename="mainwindow.cpp" line="463"/>
         <source>Line:%1 Col:%2 Selected:%3 Lines:%4 Length:%5</source>
         <translation>行:%1 列:%2 已选择:%3 总行数:%4 总长度:%5</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="471"/>
+        <location filename="mainwindow.cpp" line="481"/>
         <source>Read Only</source>
         <translation>只读</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="473"/>
+        <location filename="mainwindow.cpp" line="483"/>
         <source>Insert</source>
         <translation>插入</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="475"/>
+        <location filename="mainwindow.cpp" line="485"/>
         <source>Overwrite</source>
         <translation>覆写</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="600"/>
-        <location filename="mainwindow.cpp" line="615"/>
+        <location filename="mainwindow.cpp" line="614"/>
+        <location filename="mainwindow.cpp" line="629"/>
         <source>Confirm</source>
         <translation>确认</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="601"/>
-        <location filename="mainwindow.cpp" line="609"/>
-        <location filename="mainwindow.cpp" line="791"/>
+        <location filename="mainwindow.cpp" line="615"/>
+        <location filename="mainwindow.cpp" line="623"/>
+        <location filename="mainwindow.cpp" line="805"/>
         <source>Source file is not compiled.</source>
         <translation>源文件尚未编译。</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="602"/>
-        <location filename="mainwindow.cpp" line="791"/>
+        <location filename="mainwindow.cpp" line="616"/>
+        <location filename="mainwindow.cpp" line="805"/>
         <source>Compile now?</source>
         <translation>现在编译？</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="616"/>
-        <location filename="mainwindow.cpp" line="802"/>
+        <location filename="mainwindow.cpp" line="630"/>
+        <location filename="mainwindow.cpp" line="816"/>
         <source>Source file is more recent than executable.</source>
         <translation>源文件比可执行程序新。</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="617"/>
+        <location filename="mainwindow.cpp" line="631"/>
         <source>Recompile now?</source>
         <translation>重新编译？</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="669"/>
+        <location filename="mainwindow.cpp" line="683"/>
         <source>No compiler set</source>
         <translation>无编译器设置</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="670"/>
+        <location filename="mainwindow.cpp" line="684"/>
         <source>No compiler set is configured.</source>
         <translation>没有配置编译器设置。</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="670"/>
+        <location filename="mainwindow.cpp" line="684"/>
         <source>Can&apos;t start debugging.</source>
         <translation>无法启动调试器</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="759"/>
+        <location filename="mainwindow.cpp" line="773"/>
         <source>Enable debugging</source>
         <translation>启用调试参数</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="760"/>
+        <location filename="mainwindow.cpp" line="774"/>
         <source>You have not enabled debugging info (-g3) and/or stripped it from the executable (-s) in Compiler Options.&lt;BR /&gt;&lt;BR /&gt;Do you want to correct this now?</source>
         <translation>当前编译设置中未启用调试选项(-g3)，或启用了信息剥除选项(-s)&lt;br /&gt;&lt;br/&gt;是否纠正这一问题？</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="802"/>
+        <location filename="mainwindow.cpp" line="816"/>
         <source>Recompile?</source>
         <translation>重新编译？</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="1021"/>
+        <location filename="mainwindow.cpp" line="1044"/>
         <source>%1 files autosaved</source>
         <translation>已自动保存%1个文件</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="1067"/>
-        <location filename="mainwindow.cpp" line="1091"/>
-        <location filename="mainwindow.cpp" line="1113"/>
-        <location filename="mainwindow.cpp" line="1125"/>
-        <location filename="mainwindow.cpp" line="1421"/>
-        <location filename="mainwindow.cpp" line="1433"/>
+        <location filename="mainwindow.cpp" line="523"/>
+        <location filename="mainwindow.cpp" line="1060"/>
+        <location filename="mainwindow.cpp" line="1117"/>
+        <location filename="mainwindow.cpp" line="1141"/>
+        <location filename="mainwindow.cpp" line="1163"/>
+        <location filename="mainwindow.cpp" line="1175"/>
+        <location filename="mainwindow.cpp" line="1471"/>
+        <location filename="mainwindow.cpp" line="1483"/>
         <source>Error</source>
         <translation>错误</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="1087"/>
+        <location filename="mainwindow.cpp" line="1054"/>
+        <source>File &apos;%1&apos; was changed.</source>
+        <translation>磁盘文件&apos;%1&apos;已被修改。</translation>
+    </message>
+    <message>
+        <location filename="mainwindow.cpp" line="1054"/>
+        <source>Reload its content from disk?</source>
+        <translation>是否重新读取它的内容？</translation>
+    </message>
+    <message>
+        <location filename="mainwindow.cpp" line="1065"/>
+        <source>File &apos;%1&apos; was removed.</source>
+        <translation>磁盘文件&apos;%1&apos;已被删除。</translation>
+    </message>
+    <message>
+        <location filename="mainwindow.cpp" line="1065"/>
+        <source>Keep it open?</source>
+        <translation>是否保持它在小熊猫C++中打开的编辑窗口？</translation>
+    </message>
+    <message>
+        <location filename="mainwindow.cpp" line="1137"/>
         <source>Open</source>
         <translation>打开</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="1269"/>
+        <location filename="mainwindow.cpp" line="1319"/>
         <source>Compile Failed</source>
         <translation>编译失败</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="1274"/>
+        <location filename="mainwindow.cpp" line="1324"/>
         <source>Run Failed</source>
         <translation>运行失败</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="1450"/>
-        <location filename="mainwindow.cpp" line="1464"/>
+        <location filename="mainwindow.cpp" line="1500"/>
+        <location filename="mainwindow.cpp" line="1514"/>
         <source>Confirm Convertion</source>
         <translation>确认转换</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="1451"/>
-        <location filename="mainwindow.cpp" line="1465"/>
+        <location filename="mainwindow.cpp" line="1501"/>
+        <location filename="mainwindow.cpp" line="1515"/>
         <source>The editing file will be saved using %1 encoding. &lt;br /&gt;This operation can&apos;t be reverted. &lt;br /&gt;Are you sure to continue?</source>
         <translation>当前编辑器中的文件将会使用%1编码保存。&lt;br /&gt;这项操作无法被撤回。&lt;br /&gt;你确定要继续吗？</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="1640"/>
+        <location filename="mainwindow.cpp" line="1690"/>
         <source>New Watch Expression</source>
         <translation>新监视表达式</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="1641"/>
+        <location filename="mainwindow.cpp" line="1691"/>
         <source>Enter Watch Expression (it is recommended to use &apos;this-&gt;&apos; for class members):</source>
         <translation>输入监视表达式</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="1687"/>
+        <location filename="mainwindow.cpp" line="1737"/>
         <source>Parsing file %1 of %2: &quot;%3&quot;</source>
         <translation>（%1/%2）正在解析文件&quot;%3&quot;</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="1709"/>
-        <location filename="mainwindow.cpp" line="1715"/>
+        <location filename="mainwindow.cpp" line="1759"/>
+        <location filename="mainwindow.cpp" line="1765"/>
         <source>Done parsing %1 files in %2 seconds</source>
         <translation>完成%1个文件的解析,用时%2秒</translation>
     </message>
     <message>
-        <location filename="mainwindow.cpp" line="1712"/>
+        <location filename="mainwindow.cpp" line="1762"/>
         <source>(%1 files per second)</source>
         <translation>(每秒%1个文件）</translation>
     </message>
@@ -2004,12 +2043,12 @@ Are you really want to continue?</source>
 <context>
     <name>QObject</name>
     <message>
-        <location filename="editorlist.cpp" line="73"/>
+        <location filename="editorlist.cpp" line="76"/>
         <source>Save</source>
         <translation>保存</translation>
     </message>
     <message>
-        <location filename="editorlist.cpp" line="74"/>
+        <location filename="editorlist.cpp" line="77"/>
         <source>Save changes to %1?</source>
         <translation>将修改保存到&quot;%1&quot;？</translation>
     </message>
@@ -2584,17 +2623,17 @@ Are you really want to continue?</source>
 <context>
     <name>RegisterModel</name>
     <message>
-        <location filename="debugger.cpp" line="1807"/>
+        <location filename="debugger.cpp" line="1820"/>
         <source>Register</source>
         <translation>寄存器</translation>
     </message>
     <message>
-        <location filename="debugger.cpp" line="1809"/>
+        <location filename="debugger.cpp" line="1822"/>
         <source>Value(Hex)</source>
         <translation>值(HEX)</translation>
     </message>
     <message>
-        <location filename="debugger.cpp" line="1811"/>
+        <location filename="debugger.cpp" line="1824"/>
         <source>Value(Dec)</source>
         <translation>值(DEC)</translation>
     </message>
@@ -3012,12 +3051,12 @@ Are you really want to continue?</source>
         <translation>调试器</translation>
     </message>
     <message>
-        <location filename="settingsdialog/settingsdialog.cpp" line="174"/>
+        <location filename="settingsdialog/settingsdialog.cpp" line="178"/>
         <source>Save Changes</source>
         <translation>保存修改</translation>
     </message>
     <message>
-        <location filename="settingsdialog/settingsdialog.cpp" line="175"/>
+        <location filename="settingsdialog/settingsdialog.cpp" line="179"/>
         <source>There are changes in the settings, do you want to save them before swtich to other page?</source>
         <translation>本页中有尚未保存的设置修改，是否保存后再切换到其他页？</translation>
     </message>

RedPandaIDE/editor.cpp

@@ -68,6 +68,8 @@ Editor::Editor(QWidget *parent, const QString& filename,
   mActiveBreakpointLine(-1),
   mLastIdCharPressed(0),
   mCurrentWord(),
+  mSelectionWord(),
+  mOldSelectionWord(),
   mCurrentTipType(TipType::None)
 {
     mUseCppSyntax = pSettings->editor().defaultFileCpp();
@@ -153,6 +155,12 @@ void Editor::loadFile() {
     default:
         mUseCppSyntax = pSettings->editor().defaultFileCpp();
     }
+    if (highlighter() && mParser) {
+        reparse();
+        if (pSettings->editor().syntaxCheck() && pSettings->editor().syntaxCheckWhenLineChanged()) {
+            pMainWindow->checkSyntaxInBack(this);
+        }
+    }
 }
 
 void Editor::saveFile(const QString &filename) {
@@ -182,8 +190,10 @@ bool Editor::save(bool force, bool doReparse) {
         return false;
     }
     if (this->modified()|| force) {
+        pMainWindow->fileSystemWatcher()->removePath(mFilename);
         try {
             saveFile(mFilename);
+            pMainWindow->fileSystemWatcher()->addPath(mFilename);
             setModified(false);
             mIsNew = false;
             this->updateCaption();
@@ -192,6 +202,7 @@ bool Editor::save(bool force, bool doReparse) {
                 QMessageBox::critical(pMainWindow,tr("Error"),
                                      exception.reason());
             }
+            pMainWindow->fileSystemWatcher()->addPath(mFilename);
             return false;
         }
     }
@@ -214,6 +225,9 @@ bool Editor::saveAs(){
     if (newName.isEmpty()) {
         return false;
     }
+    pMainWindow->fileSystemWatcher()->removePath(mFilename);
+    if (pSettings->codeCompletion().enabled() && mParser)
+        mParser->invalidateFile(mFilename);
     try {
         mFilename = newName;
         saveFile(mFilename);
@@ -225,6 +239,7 @@ bool Editor::saveAs(){
                                  exception.reason());
         return false;
     }
+    pMainWindow->fileSystemWatcher()->addPath(mFilename);
     switch(getFileType(mFilename)) {
     case FileType::CppSource:
         mUseCppSyntax = true;
@@ -236,11 +251,22 @@ bool Editor::saveAs(){
         mUseCppSyntax = pSettings->editor().defaultFileCpp();
     }
 
-    //todo: update (reassign highlighter)
-    //todo: remove old file from parser and reparse file
-    //todo: unmoniter/ monitor file
-    //todo: update windows caption
-    //todo: update class browser;
+
+    //update (reassign highlighter)
+    PSynHighlighter newHighlighter = HighlighterManager().getHighlighter(mFilename);
+    if (newHighlighter) {
+        setUseCodeFolding(true);
+    } else {
+        setUseCodeFolding(false);
+    }
+    setHighlighter(newHighlighter);
+    applyColorScheme(pSettings->editor().colorScheme());
+
+    reparse();
+
+    if (highlighter() && pSettings->editor().syntaxCheck() && pSettings->editor().syntaxCheckWhenLineChanged())
+        pMainWindow->checkSyntaxInBack(this);
+
     return true;
 }
 
@@ -586,7 +612,7 @@ void Editor::onPreparePaintHighlightToken(int line, int aChar, const QString &to
           || (attr->name() == SYNS_AttrReservedWord)
           || (attr->name() == SYNS_AttrPreprocessor)
           )
-          && (token == selText())) {
+          && (token == mSelectionWord)) {
             foreground = selectedForeground();
             background = selectedBackground();
             return;
@@ -629,7 +655,7 @@ bool Editor::event(QEvent *event)
         int line ;
         if (reason == TipType::Error) {
             pError = getSyntaxIssueAtPosition(p);
-        } else if ((reason == TipType::None) && PointToLine(helpEvent->pos(),line)) {
+        } else if (PointToLine(helpEvent->pos(),line)) {
             //it's on gutter
             //see if its error;
             PSyntaxIssueList issues = getSyntaxIssuesAtLine(line);
@@ -671,7 +697,7 @@ bool Editor::event(QEvent *event)
             return true;
         }
 
-//        qDebug()<<s<<" -- "<<(int)reason;
+        //qDebug()<<s<<" -- "<<(int)reason;
         // Don't rescan the same stuff over and over again (that's slow)
         //  if (s = fCurrentWord) and (fText.Hint<>'') then
         s = s.trimmed();
@@ -994,7 +1020,7 @@ void Editor::onStatusChanged(SynStatusChanges changes)
             && (lines()->count()!=mLineCount)
             && (lines()->count()!=0) && ((mLineCount>0) || (lines()->count()>1))) {
         reparse();
-        if (!readOnly() && pSettings->editor().syntaxCheck() && pSettings->editor().syntaxCheckWhenLineChanged())
+        if (!readOnly() && highlighter() && pSettings->editor().syntaxCheck() && pSettings->editor().syntaxCheckWhenLineChanged())
             pMainWindow->checkSyntaxInBack(this);
     }
     mLineCount = lines()->count();
@@ -1017,6 +1043,32 @@ void Editor::onStatusChanged(SynStatusChanges changes)
 
     // scSelection includes anything caret related
     if (changes.testFlag(SynStatusChange::scSelection)) {
+        mSelectionWord="";
+        if (selAvail()) {
+            BufferCoord wordBegin,wordEnd,bb,be;
+            bb = blockBegin();
+            be = blockEnd();
+            wordBegin = WordStartEx(bb);
+            wordEnd = WordEndEx(be);
+            if (wordBegin.Line == bb.Line
+                    && wordBegin.Char == bb.Char
+                    && wordEnd.Line == be.Line
+                    && wordEnd.Char == be.Char) {
+                if (wordBegin.Line>=1 && wordBegin.Line<=lines()->count()) {
+                    QString line = lines()->getString(wordBegin.Line-1);
+                    mSelectionWord = line.mid(wordBegin.Char-1,wordEnd.Char-wordBegin.Char);
+                }
+            }
+//            qDebug()<<QString("(%1,%2)").arg(bb.Line).arg(bb.Char)
+//                   <<" - "<<QString("(%1,%2)").arg(be.Line).arg(be.Char)
+//                  <<" - "<<QString("(%1,%2)").arg(wordBegin.Line).arg(wordBegin.Char)
+//                 <<" - "<<QString("(%1,%2)").arg(wordEnd.Line).arg(wordEnd.Char)
+//                <<" : "<<mSelectionWord;
+        }
+        if (mOldSelectionWord != mSelectionWord) {
+            invalidate();
+            mOldSelectionWord = mSelectionWord;
+        }
         pMainWindow->updateStatusbarForLineCol();
 
 //      // Update the function tip

RedPandaIDE/editorlist.cpp

@@ -28,6 +28,9 @@ Editor* EditorList::newEditor(const QString& filename, const QByteArray& encodin
         parentPageControl = getNewEditorPageControl();
     else
         parentPageControl = page;
+    if (!filename.isEmpty() && QFile(filename).exists()) {
+        pMainWindow->fileSystemWatcher()->addPath(filename);
+    }
     return new Editor(parentPageControl,filename,encoding,inProject,newFile,parentPageControl);
     //UpdateLayout;
 }
@@ -90,6 +93,7 @@ bool EditorList::closeEditor(Editor* editor, bool transferFocus, bool force) {
         pMainWindow->rebuildOpenedFileHisotryMenu();
     }
 
+    pMainWindow->fileSystemWatcher()->removePath(editor->filename());
     //editor->deleteLater();
     delete editor;
 

RedPandaIDE/mainwindow.cpp

@@ -122,6 +122,9 @@ MainWindow::MainWindow(QWidget *parent)
     //class browser
     ui->classBrowser->setModel(&mClassBrowserModel);
 
+    connect(&mFileSystemWatcher,&QFileSystemWatcher::fileChanged,
+            this, &MainWindow::onFileChanged);
+
     mCompletionPopup = std::make_shared<CodeCompletionPopup>();
     mHeaderCompletionPopup = std::make_shared<HeaderCompletionPopup>();
 
@@ -277,6 +280,11 @@ void MainWindow::applySettings()
     updateDebuggerSettings();
 }
 
+QFileSystemWatcher *MainWindow::fileSystemWatcher()
+{
+    return &mFileSystemWatcher;
+}
+
 void MainWindow::removeActiveBreakpoints()
 {
     for (int i=0;i<mEditorList->pageCount();i++) {
@@ -506,10 +514,14 @@ void MainWindow::openFile(const QString &filename)
         editor->activate();
         return;
     }
-    editor = mEditorList->newEditor(filename,ENCODING_AUTO_DETECT,
-                                    false,false);
-    editor->activate();
-    this->updateForEncodingInfo();
+    try {
+        editor = mEditorList->newEditor(filename,ENCODING_AUTO_DETECT,
+                                        false,false);
+        editor->activate();
+        this->updateForEncodingInfo();
+    } catch (FileError e) {
+        QMessageBox::critical(this,tr("Error"),e.reason());
+    }
 }
 
 void MainWindow::setupActions() {
@@ -1032,6 +1044,36 @@ void MainWindow::onAutoSaveTimeout()
     updateStatusbarMessage(tr("%1 files autosaved").arg(updateCount));
 }
 
+void MainWindow::onFileChanged(const QString &path)
+{
+    Editor *e = mEditorList->getOpenedEditorByFilename(path);
+    if (e) {
+        if (QFile(path).exists()) {
+            e->activate();
+            if (QMessageBox::question(this,tr("Compile"),
+                                      tr("File '%1' was changed.").arg(path)+"<BR /><BR />" + tr("Reload its content from disk?"),
+                                      QMessageBox::Yes|QMessageBox::No,
+                                      QMessageBox::No) == QMessageBox::Yes) {
+                try {
+                    e->loadFile();
+                } catch(FileError e) {
+                    QMessageBox::critical(this,tr("Error"),e.reason());
+                }
+            }
+        } else {
+            if (QMessageBox::question(this,tr("Compile"),
+                                      tr("File '%1' was removed.").arg(path)+"<BR /><BR />" + tr("Keep it open?"),
+                                      QMessageBox::Yes|QMessageBox::No,
+                                      QMessageBox::Yes) == QMessageBox::No) {
+                mEditorList->closeEditor(e);
+            } else {
+                e->setModified(true);
+                e->updateCaption();
+            }
+        }
+    }
+}
+
 const std::shared_ptr<HeaderCompletionPopup> &MainWindow::headerCompletionPopup() const
 {
     return mHeaderCompletionPopup;

RedPandaIDE/mainwindow.h

@@ -1,6 +1,7 @@
 #ifndef MAINWINDOW_H
 #define MAINWINDOW_H
 
+#include <QFileSystemWatcher>
 #include <QMainWindow>
 #include <QTimer>
 #include "common.h"
@@ -68,6 +69,7 @@ public:
     void showSearchPanel();
 
     void applySettings();
+    QFileSystemWatcher* fileSystemWatcher();
 
     void removeActiveBreakpoints();
     void setActiveBreakpoint(QString FileName, int Line, bool setFocus=true);
@@ -127,6 +129,7 @@ private:
 
 private slots:
     void onAutoSaveTimeout();
+    void onFileChanged(const QString& path);
 
     void on_actionNew_triggered();
 
@@ -247,6 +250,7 @@ private:
     QList<QAction *> mRecentFileActions;
     bool mQuitting;
     QElapsedTimer mParserTimer;
+    QFileSystemWatcher mFileSystemWatcher;
 
     std::shared_ptr<CodeCompletionPopup> mCompletionPopup;
     std::shared_ptr<HeaderCompletionPopup> mHeaderCompletionPopup;

RedPandaIDE/parser/cppparser.cpp

@@ -3379,7 +3379,7 @@ QString CppParser::splitPhrase(const QString &phrase, QString &sClazz, QString &
             firstOpEnd = i+2;
             sOperator = "::";
             break;
-        } else if ((phrase[i] == '.') && (bracketLevel=0)) {
+        } else if ((phrase[i] == '.') && (bracketLevel==0)) {
             firstOpStart = i;
             firstOpEnd = i+1;
             sOperator = ".";
@@ -3771,6 +3771,8 @@ void CppFileListParserThread::run()
 
 void parseFile(PCppParser parser, const QString& fileName, bool inProject, bool onlyIfNotParsed, bool updateView)
 {
+    if (!parser)
+        return;
     CppFileParserThread* thread = new CppFileParserThread(parser,fileName,inProject,onlyIfNotParsed,updateView);
     thread->connect(thread,
                     &QThread::finished,
@@ -3781,6 +3783,8 @@ void parseFile(PCppParser parser, const QString& fileName, bool inProject, bool
 
 void parseFileList(PCppParser parser, bool updateView)
 {
+    if (!parser)
+        return;
     CppFileListParserThread *thread = new CppFileListParserThread(parser,updateView);
     thread->connect(thread,
                     &QThread::finished,