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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef URLLINEEDIT_H
#define URLLINEEDIT_H

#include <QtCore/QUrl>
#include <QtWidgets/QWidget>
#include <QtWidgets/QStyleOptionFrame>

QT_BEGIN_NAMESPACE
class QLineEdit;
QT_END_NAMESPACE

class ClearButton;
class ExLineEdit : public QWidget
{
    Q_OBJECT

public:
    ExLineEdit(QWidget *parent = 0);

    inline QLineEdit *lineEdit() const { return m_lineEdit; }

    void setLeftWidget(QWidget *widget);
    QWidget *leftWidget() const;

    QSize sizeHint() const;

    QVariant inputMethodQuery(Qt::InputMethodQuery property) const;
protected:
    void focusInEvent(QFocusEvent *event);
    void focusOutEvent(QFocusEvent *event);
    void keyPressEvent(QKeyEvent *event);
    void paintEvent(QPaintEvent *event);
    void resizeEvent(QResizeEvent *event);
    void inputMethodEvent(QInputMethodEvent *e);
    bool event(QEvent *event);

protected:
    void updateGeometries();
    void initStyleOption(QStyleOptionFrame *option) const;

    QWidget *m_leftWidget;
    QLineEdit *m_lineEdit;
    ClearButton *m_clearButton;
};

class UrlIconLabel;
class WebView;
class UrlLineEdit : public ExLineEdit
{
    Q_OBJECT

public:
    UrlLineEdit(QWidget *parent = 0);
    void setWebView(WebView *webView);

protected:
    void paintEvent(QPaintEvent *event);
    void focusOutEvent(QFocusEvent *event);

private slots:
    void webViewUrlChanged(const QUrl &url);
    void webViewIconChanged();

private:
    QLinearGradient generateGradient(const QColor &color) const;
    WebView *m_webView;
    UrlIconLabel *m_iconLabel;
    QColor m_defaultBaseColor;

};


#endif // URLLINEEDIT_H