Work on web browser.

CMakeLists.txt

@@ -169,7 +169,6 @@ set(APP_SOURCES
   src/gui/dynamicshortcutswidget.cpp
   src/gui/webbrowser.cpp
   src/gui/basewebview.cpp
-  src/gui/basewebpage.cpp
   src/gui/baselineedit.cpp
   src/gui/locationlineedit.cpp
 
@@ -181,6 +180,7 @@ set(APP_SOURCES
   src/core/localization.cpp
   src/core/dynamicshortcuts.cpp
   src/core/basenetworkaccessmanager.cpp
+  src/core/basewebpage.cpp
   src/core/webBrowsernetworkaccessmanager.cpp
 
   # Basic application sources.
@@ -207,13 +207,13 @@ set(APP_HEADERS
   src/gui/dynamicshortcutswidget.h
   src/gui/webbrowser.h
   src/gui/basewebview.h
-  src/gui/basewebpage.h
   src/gui/baselineedit.h
   src/gui/locationlineedit.h
 
   # CORE headers.
   src/core/basenetworkaccessmanager.h
   src/core/webBrowsernetworkaccessmanager.h
+  src/core/basewebpage.h
 )
 
 # Add form files.

src/core/basenetworkaccessmanager.h

@@ -4,13 +4,18 @@
 #include <QNetworkAccessManager>
 
 
+// This is base class for all network access managers.
 class BaseNetworkAccessManager : public QNetworkAccessManager {
     Q_OBJECT
+
   public:
+    // Constructors and desctructors.
     explicit BaseNetworkAccessManager(QObject *parent = 0);
     virtual ~BaseNetworkAccessManager();
 
   public slots:
+    // Loads network settings for this instance.
+    // NOTE: This sets up proxy settings.
     virtual void loadSettings();
 
   protected:

src/core/basewebpage.cpp

@@ -0,0 +1,16 @@
+#include <QNetworkReply>
+#include <QWebFrame>
+
+#include "core/webbrowsernetworkaccessmanager.h"
+#include "core/basewebpage.h"
+#include "gui/webbrowser.h"
+
+
+BaseWebPage::BaseWebPage(QObject *parent) : QWebPage(parent) {
+  // Setup global network access manager.
+  // NOTE: This makes network settings easy for all web browsers.
+  setNetworkAccessManager(WebBrowser::globalNetworkManager());
+}
+
+BaseWebPage::~BaseWebPage() {
+}

src/core/basewebpage.h

@@ -6,13 +6,11 @@
 
 class BaseWebPage : public QWebPage {
     Q_OBJECT
+
   public:
+    // Constructors and destructors.
     explicit BaseWebPage(QObject *parent = 0);
-    
+    virtual ~BaseWebPage();
-  signals:
-    
-  public slots:
-    
 };
 
 #endif // BASEWEBPAGE_H

src/core/webbrowsernetworkaccessmanager.h

@@ -4,9 +4,12 @@
 #include "core/basenetworkaccessmanager.h"
 
 
+// This is custom network access manager for web browsers.
 class WebBrowserNetworkAccessManager : public BaseNetworkAccessManager {
     Q_OBJECT
+
   public:
+    // Constructors and destructors.
     explicit WebBrowserNetworkAccessManager(QObject *parent = 0);
     virtual ~WebBrowserNetworkAccessManager();
     

src/gui/baselineedit.h

@@ -7,6 +7,7 @@
 class BaseLineEdit : public QLineEdit {
     Q_OBJECT
   public:
+    // Constructors and destructors.
     explicit BaseLineEdit(QWidget *parent = 0);
     virtual ~BaseLineEdit();
     
@@ -14,10 +15,8 @@ class BaseLineEdit : public QLineEdit {
     void keyPressEvent(QKeyEvent *event);
 
   signals:
+    // Emitted if user hits ENTER button.
     void submitted(const QString &text);
-    
-  public slots:
-    
 };
 
 #endif // BASELINEEDIT_H

src/gui/basewebpage.cpp

@@ -1,8 +0,0 @@
-#include "core/webbrowsernetworkaccessmanager.h"
-#include "gui/basewebpage.h"
-#include "gui/webbrowser.h"
-
-
-BaseWebPage::BaseWebPage(QObject *parent) : QWebPage(parent) {
-  setNetworkAccessManager(WebBrowser::globalNetworkManager());
-}

src/gui/basewebview.cpp

@@ -1,12 +1,33 @@
 #include <QStyleOptionFrameV3>
 
+#include "core/basewebpage.h"
 #include "gui/basewebview.h"
-#include "gui/basewebpage.h"
 
 
 BaseWebView::BaseWebView(QWidget *parent)
   : QWebView(parent), m_page(new BaseWebPage(this)) {
   setPage(m_page);
+  createConnections();
+}
+
+BaseWebView::~BaseWebView() {
+}
+
+void BaseWebView::onLoadFinished(bool ok) {
+  // If page was not loaded, then display custom error page.
+  if (!ok) {
+    displayErrorPage();
+  }
+}
+
+void BaseWebView::createConnections() {
+  connect(this, &BaseWebView::loadFinished,
+          this, &BaseWebView::onLoadFinished);
+}
+
+void BaseWebView::displayErrorPage() {
+  // TODO: Add better custom error page.
+  setHtml("error", url());
 }
 
 void BaseWebView::paintEvent(QPaintEvent *event) {
@@ -15,7 +36,7 @@ void BaseWebView::paintEvent(QPaintEvent *event) {
   // Draw additional frame.
   QPainter painter(this);
   QStyleOptionFrameV3 style_option;
-  int frame_shape  = QFrame::Sunken & QFrame::Shape_Mask;
+  int frame_shape = QFrame::Sunken & QFrame::Shape_Mask;
 
   style_option.init(this);
   style_option.frameShape = QFrame::Shape(int(style_option.frameShape) |

src/gui/basewebview.h

@@ -9,10 +9,24 @@ class BaseWebPage;
 
 class BaseWebView : public QWebView {
     Q_OBJECT
+
   public:
+    // Constructors and destructors.
     explicit BaseWebView(QWidget *parent = 0);
+    virtual ~BaseWebView();
+
+  protected slots:
+    // Executes if loading of any page is done.
+    void onLoadFinished(bool ok);
 
   protected:
+    // Creates necessary connections.
+    void createConnections();
+
+    // Displays custom error page.
+    void displayErrorPage();
+
+    // Does additional painting.
     void paintEvent(QPaintEvent *event);
 
   private:

src/gui/dynamicshortcutswidget.h

@@ -13,6 +13,7 @@ class DynamicShortcutsWidget : public QWidget {
     Q_OBJECT
     
   public:
+    // Constructors and destructors.
     explicit DynamicShortcutsWidget(QWidget *parent = 0);
     virtual ~DynamicShortcutsWidget();
 

src/gui/locationlineedit.cpp

@@ -1,10 +1,16 @@
 #include <QPaintEvent>
+#include <QStyleOptionFrameV2>
+#include <QPainter>
+#include <QApplication>
 
 #include "gui/locationlineedit.h"
 
 
 LocationLineEdit::LocationLineEdit(QWidget *parent)
-  : BaseLineEdit(parent), m_progress(0), m_mouseSelectsAllText(true) {
+  : BaseLineEdit(parent),
+    m_progress(0),
+    m_defaultPalette(palette()),
+    m_mouseSelectsAllText(true) {
 }
 
 LocationLineEdit::~LocationLineEdit() {
@@ -12,6 +18,11 @@ LocationLineEdit::~LocationLineEdit() {
 
 void LocationLineEdit::setProgress(int progress) {
   m_progress = progress;
+  update();
+}
+
+void LocationLineEdit::clearProgress() {
+  setProgress(0);
 }
 
 void LocationLineEdit::focusOutEvent(QFocusEvent *event) {
@@ -36,5 +47,26 @@ void LocationLineEdit::mousePressEvent(QMouseEvent *event) {
 }
 
 void LocationLineEdit::paintEvent(QPaintEvent *event) {
+  // Draw "progress bar" if needed.
+  if (m_progress > 0) {
+    QPalette current_palette = palette();
+    QColor loadingColor = QColor(0, 255, 0, 100);
+    QLinearGradient gradient(0, 0, width(), 0);
+    qreal percentage_border = m_progress / 100.0;
+
+    gradient.setColorAt(0, loadingColor);
+    gradient.setColorAt(percentage_border - 0.01, loadingColor);
+    gradient.setColorAt(percentage_border - 0.008, loadingColor.lighter(130));
+    //gradient.setColorAt(percentage_border - 0.002, loadingColor);
+    gradient.setColorAt(percentage_border, QApplication::palette().color(QPalette::Base));
+    current_palette.setBrush(QPalette::Base, gradient);
+
+    setPalette(current_palette);
+  }
+  // No "progress bar" is needed, restore default palette.
+  else {
+    setPalette(m_defaultPalette);
+  }
+
   BaseLineEdit::paintEvent(event);
 }

src/gui/locationlineedit.h

@@ -15,6 +15,7 @@ class LocationLineEdit : public BaseLineEdit {
     // Sets percentual value of web page loading action.
     // NOTE: Number ranging from 0 to 100 is expected.
     void setProgress(int progress);
+    void clearProgress();
 
   protected:
     void focusOutEvent(QFocusEvent *event);
@@ -23,6 +24,7 @@ class LocationLineEdit : public BaseLineEdit {
 
   private:
     int m_progress;
+    QPalette m_defaultPalette;
     bool m_mouseSelectsAllText;
 };
 

src/gui/webbrowser.cpp

@@ -8,8 +8,8 @@
 
 #include "core/basenetworkaccessmanager.h"
 #include "core/webbrowsernetworkaccessmanager.h"
+#include "core/basewebpage.h"
 #include "gui/basewebview.h"
-#include "gui/basewebpage.h"
 #include "gui/webbrowser.h"
 #include "gui/locationlineedit.h"
 #include "gui/themefactory.h"
@@ -77,8 +77,10 @@ void WebBrowser::createConnections() {
           this, &WebBrowser::updateUrl);
 
   // Change location textbox status according to webpage status.
-  connect(m_webView->page(), &BaseWebPage::loadProgress,
+  connect(m_webView, &BaseWebView::loadProgress,
           m_txtLocation, &LocationLineEdit::setProgress);
+  connect(m_webView, &BaseWebView::loadFinished,
+          m_txtLocation, &LocationLineEdit::clearProgress);
 }
 
 void WebBrowser::updateUrl(const QUrl &url) {

src/gui/webbrowser.h

@@ -14,19 +14,31 @@ class WebBrowser : public QWidget {
     Q_OBJECT
     
   public:
+    // Constructors and destructors.
     explicit WebBrowser(QWidget *parent = 0);
     ~WebBrowser();
 
+    // Reloads icons for all buttons.
     void setupIcons();
 
+    // Returns pointer to global network access manager
+    // for web browsers.
+    // NOTE: All web browsers use shared network access manager,
+    // which makes setting of custom network settings easy.
     static WebBrowserNetworkAccessManager *globalNetworkManager();
+
+    // Returns list of all running web browsers.
     static QList<WebBrowser*> runningWebBrowsers();
 
   protected:
+    // Creates necessary connections.
     void createConnections();
 
   protected slots:
+    // Updates url (for example on location text box).
     void updateUrl(const QUrl &url);
+
+    // Loads new url into the web browser.
     void navigateToUrl(const QString &url);
 
   private: