mainwindow.cpp #7

#include "mainwindow.h"
#include "ui_mainwindow.h"

#include "clientkitapi.h"

#include <QApplication>
#include <QWebView>
#include <QWebPage>
#include <QWebFrame>
#include <QWebSettings>

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    //init the UI as defined in 'mainwindow.ui' (edit using Qt Designer)
    ui->setupUi(this);

    setAttribute(Qt::WA_TranslucentBackground, true);
//    setAttribute(Qt::WA_OpaquePaintEvent);
//    setAttribute(Qt::WA_NoSystemBackground);

    ui->centralWidget->setAttribute(Qt::WA_TranslucentBackground, true);
//    ui->centralWidget->setAttribute(Qt::WA_OpaquePaintEvent);
//    ui->centralWidget->setAttribute(Qt::WA_NoSystemBackground);

    ui->webView->setAttribute(Qt::WA_TranslucentBackground, true);
//    ui->webView->setAttribute(Qt::WA_OpaquePaintEvent);
//    ui->webView->setAttribute(Qt::WA_NoSystemBackground);

    //init the ClientKitApi
    m_ClientKitApi = new ClientKitApi(this);

//    QFile jsMethodSource (":/js/ClientKitMethods.js");
//    jsMethodSource.open(QIODevice::ReadOnly);
//    m_JsMethods = jsMethodSource.readAll();
//    jsMethodSource.close();

    //create addressbar widget and set up actions
    initAddressBar();

    //create status bar and set up actions
    initStatusBar();

    //populate the menus
    populateMenus();

    //connect remaining SIGNALs and SLOTs
    connectSignalsAndSlots();

    //create some Actions
    createActions();

    //set up the webView
    QWebSettings* webSettings = ui->webView->page()->settings()->globalSettings();
    webSettings->setAttribute(QWebSettings::JavaEnabled,true);
    webSettings->setAttribute(QWebSettings::JavascriptEnabled, true);
    webSettings->setAttribute(QWebSettings::JavascriptCanOpenWindows, true);
    webSettings->setAttribute(QWebSettings::JavascriptCanCloseWindows, true);
    webSettings->setAttribute(QWebSettings::DeveloperExtrasEnabled, true);
    webSettings->setAttribute(QWebSettings::LocalStorageEnabled, true);
    webSettings->setAttribute(QWebSettings::OfflineWebApplicationCacheEnabled, true);
    webSettings->setAttribute(QWebSettings::OfflineStorageDatabaseEnabled, true);
    webSettings->setAttribute(QWebSettings::LocalContentCanAccessRemoteUrls, true);
    webSettings->setAttribute(QWebSettings::LocalContentCanAccessFileUrls, true);
    webSettings->setAttribute(QWebSettings::SpatialNavigationEnabled, true);
    webSettings->setOfflineWebApplicationCacheQuota(1024*1024);
    webSettings->enablePersistentStorage(QCoreApplication::applicationDirPath()+"/../_appDataCache/");

    ui->webView->load(QUrl("qrc:/index.html"));
//    setCentralWidget(ui->webView);
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::addJSObject() {
    // Add ClientKitApi to JavaScript window object (global context).
    ui->webView->page()->mainFrame()->addToJavaScriptWindowObject(QString("ClientKit"), m_ClientKitApi);

    //add additional methods in js
//    ui->webView->page()->mainFrame()->evaluateJavaScript(m_JsMethods);
}

void MainWindow::on_actionClientKit_Help_Page_triggered()
{
    ui->webView->load(QUrl("qrc:/help.html"));
}

void MainWindow::on_actionClientKit_Main_Page_triggered()
{
    ui->webView->load(QUrl("qrc:/index.html"));
}

void MainWindow::setViewUrl()
{
    QUrl url = QUrl(locationEdit->text());
    ui->webView->setUrl(url);
    ui->webView->setFocus();
}

void MainWindow::startLoading()
{
    ui->mainToolBar->removeAction(addressBarText);

    ui->mainToolBar->removeAction(ui->webView->pageAction(QWebPage::Reload));
    ui->mainToolBar->addAction(ui->webView->pageAction(QWebPage::Stop));

    ui->mainToolBar->addAction(addressBarText);
}

void MainWindow::adjustLocation()
{
    locationEdit->setText(ui->webView->url().toString());
}

void MainWindow::adjustTitle()
{
    QString windowTitle = "ClientKit - ";

    if (ui->webView->title().length()==0)
        windowTitle += "(Untitled Page)";
    else
         windowTitle += ui->webView->title();

    if (loadProgress <= 0 || loadProgress >= 100)
        setWindowTitle(windowTitle);
    else
        setWindowTitle(QString("%1 - [%2%]").arg(windowTitle).arg(loadProgress));
}

void MainWindow::setProgress(int p)
{
    loadProgress = p;
    adjustTitle();
}

void MainWindow::finishLoading(bool)
{
    loadProgress = 100;
    adjustTitle();

    ui->mainToolBar->removeAction(addressBarText);

    ui->mainToolBar->removeAction(ui->webView->pageAction(QWebPage::Stop));
    ui->mainToolBar->addAction(ui->webView->pageAction(QWebPage::Reload));

    ui->mainToolBar->addAction(addressBarText);
}

void MainWindow::initAddressBar()
{
    locationEdit = new QLineEdit(this);
    locationEdit->setSizePolicy(QSizePolicy::Expanding, locationEdit->sizePolicy().verticalPolicy());
    connect(locationEdit, SIGNAL(returnPressed()), SLOT(setViewUrl()));

    ui->mainToolBar->addAction(ui->webView->pageAction(QWebPage::Back));
    ui->mainToolBar->addAction(ui->webView->pageAction(QWebPage::Forward));
    ui->mainToolBar->addAction(ui->webView->pageAction(QWebPage::Reload));
    addressBarText = ui->mainToolBar->addWidget(locationEdit);
}

void MainWindow::initStatusBar()
{
    //hides status bar since it's shown by default (since it doesn't do anything yet anyway)
    ui->actionStatus_Bar->trigger();
}

void MainWindow::populateMenus()
{
    ui->menuGo_To->addAction(ui->webView->pageAction(QWebPage::Back));
    ui->menuGo_To->addAction(ui->webView->pageAction(QWebPage::Forward));
    ui->menuGo_To->addAction(ui->webView->pageAction(QWebPage::Reload));

    ui->menu_Edit->addAction(ui->webView->pageAction(QWebPage::Undo));
    ui->menu_Edit->addAction(ui->webView->pageAction(QWebPage::Redo));
    ui->menu_Edit->addSeparator();
    ui->menu_Edit->addAction(ui->webView->pageAction(QWebPage::Cut));
    ui->menu_Edit->addAction(ui->webView->pageAction(QWebPage::Copy));
    ui->menu_Edit->addAction(ui->webView->pageAction(QWebPage::Paste));
    ui->menu_Edit->addAction(ui->webView->pageAction(QWebPage::SelectAll));
}

void MainWindow::createActions()
{

}

void MainWindow::connectSignalsAndSlots()
{
    //set up webView actions
    connect(ui->webView, SIGNAL(loadStarted()), SLOT(startLoading()));
    connect(ui->webView, SIGNAL(loadFinished(bool)), SLOT(adjustLocation()));
    connect(ui->webView, SIGNAL(titleChanged(QString)), SLOT(adjustTitle()));
    connect(ui->webView, SIGNAL(loadProgress(int)), SLOT(setProgress(int)));
    connect(ui->webView, SIGNAL(loadFinished(bool)), SLOT(finishLoading(bool)));
    connect(ui->webView->page()->mainFrame(), SIGNAL(javaScriptWindowObjectCleared()),
                     this, SLOT(addJSObject()));
}