elisa_dialog_qt.cpp

#include <QApplication>
#include <QMainWindow>
#include <QTextEdit>
#include <QLineEdit>
#include <QPushButton>
#include <QVBoxLayout>
#include <QWidget>
#include <QString>
#include <QScrollBar>

class ElisaDialog : public QMainWindow {
    Q_OBJECT

public:
    ElisaDialog(QWidget *parent = nullptr) : QMainWindow(parent) {
        setWindowTitle("ELISA Dialog");
        setMinimumSize(600, 800);

        // Create central widget and layout
        QWidget *centralWidget = new QWidget(this);
        QVBoxLayout *layout = new QVBoxLayout(centralWidget);
        layout->setSpacing(10);
        layout->setContentsMargins(20, 20, 20, 20);

        // Chat display area
        chatDisplay = new QTextEdit(this);
        chatDisplay->setReadOnly(true);
        chatDisplay->setStyleSheet(
            "QTextEdit {"
            "   background-color: white;"
            "   border: 1px solid #e0e0e0;"
            "   border-radius: 5px;"
            "   padding: 10px;"
            "   font-family: 'Segoe UI';"
            "   font-size: 14px;"
            "}"
        );
        layout->addWidget(chatDisplay);

        // Input area container
        QHBoxLayout *inputLayout = new QHBoxLayout();
        
        // Input field
        inputField = new QLineEdit(this);
        inputField->setPlaceholderText("Type your message here...");
        inputField->setStyleSheet(
            "QLineEdit {"
            "   border: 1px solid #e0e0e0;"
            "   border-radius: 5px;"
            "   padding: 10px;"
            "   font-family: 'Segoe UI';"
            "   font-size: 14px;"
            "   background-color: white;"
            "}"
        );
        
        // Send button
        sendButton = new QPushButton("Send", this);
        sendButton->setStyleSheet(
            "QPushButton {"
            "   background-color: #0084ff;"
            "   color: white;"
            "   border: none;"
            "   border-radius: 5px;"
            "   padding: 10px 20px;"
            "   font-family: 'Segoe UI';"
            "   font-size: 14px;"
            "}"
            "QPushButton:hover {"
            "   background-color: #0073e6;"
            "}"
            "QPushButton:pressed {"
            "   background-color: #0066cc;"
            "}"
        );

        inputLayout->addWidget(inputField);
        inputLayout->addWidget(sendButton);
        layout->addLayout(inputLayout);

        setCentralWidget(centralWidget);

        // Connect signals and slots
        connect(sendButton, &QPushButton::clicked, this, &ElisaDialog::handleInput);
        connect(inputField, &QLineEdit::returnPressed, this, &ElisaDialog::handleInput);

        // Initial greeting
        chatDisplay->append("ELISA: Hello! How can I help you today?");
    }

private slots:
    void handleInput() {
        QString input = inputField->text().trimmed();
        if (!input.isEmpty()) {
            // Display user input
            chatDisplay->append("You: " + input);
            
            // Generate and display response
            QString response = generateResponse(input);
            chatDisplay->append("ELISA: " + response);
            chatDisplay->append("");  // Empty line for spacing
            
            // Clear input field
            inputField->clear();
            
            // Scroll to bottom
            chatDisplay->verticalScrollBar()->setValue(
                chatDisplay->verticalScrollBar()->maximum()
            );
        }
    }

private:
    QTextEdit *chatDisplay;
    QLineEdit *inputField;
    QPushButton *sendButton;

    QString generateResponse(const QString &input) {
        QString lowercaseInput = input.toLower();
        
        // Response patterns
        struct Pattern {
            QString keyword;
            QString response;
        };
        
        static const Pattern patterns[] = {
            {"hello", "Hello! How are you feeling today?"},
            {"sad", "I'm sorry to hear that you're feeling sad. Would you like to talk about it?"},
            {"happy", "That's wonderful! What made you feel happy?"},
            {"bye", "Goodbye! Take care of yourself."},
            {"thank", "You're welcome! Is there anything else on your mind?"},
            {"help", "I'm here to listen and chat. What's troubling you?"},
            {"love", "Love is a complex emotion. Tell me more about these feelings."},
            {"angry", "I understand you're feeling angry. What happened?"},
            {"why", "That's an interesting question. What makes you ask that?"},
            {"because", "I see. And how does that make you feel?"}
        };

        for (const auto &pattern : patterns) {
            if (lowercaseInput.contains(pattern.keyword)) {
                return pattern.response;
            }
        }

        return "Please tell me more about that.";
    }
};

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);
    
    // Set application-wide style
    app.setStyle("Fusion");
    
    ElisaDialog dialog;
    dialog.show();
    
    return app.exec();
}

#include "main.moc"