/*
 * windows.cpp
 *
 * Copyright (c) 1997 Patrick Dowler dowler@morgul.fsh.uvic.ca
 * Copyright (c) 2001 Waldo Bastian bastian@kde.org
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 *
 */

#include <config-workspace.h>

#include <QApplication>
#include <QCheckBox>
#include <QRadioButton>
#include <QLabel>
#include <KComboBox>
#include <QHBoxLayout>
#include <QFormLayout>
#include <QDesktopWidget>
#include <QtDBus/QtDBus>

#include <KButtonGroup>
#include <KDE/KConfig>
#include <KDE/KLocalizedString>
#include <knuminput.h>
#include <kdialog.h>

#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>

#include "windows.h"

// kwin config keywords
#define KWIN_FOCUS                 "FocusPolicy"
#define KWIN_PLACEMENT             "Placement"
#define KWIN_GEOMETRY              "GeometryTip"
#define KWIN_AUTORAISE_INTERVAL    "AutoRaiseInterval"
#define KWIN_AUTORAISE             "AutoRaise"
#define KWIN_DELAYFOCUS_INTERVAL   "DelayFocusInterval"
#define KWIN_CLICKRAISE            "ClickRaise"
#define KWIN_SHADEHOVER            "ShadeHover"
#define KWIN_SHADEHOVER_INTERVAL   "ShadeHoverInterval"
#define KWIN_FOCUS_STEALING        "FocusStealingPreventionLevel"
#define KWIN_HIDE_UTILITY          "HideUtilityWindowsForInactive"
#define KWIN_INACTIVE_SKIP_TASKBAR "InactiveTabsSkipTaskbar"
#define KWIN_AUTOGROUP_SIMILAR     "AutogroupSimilarWindows"
#define KWIN_AUTOGROUP_FOREGROUND  "AutogroupInForeground"
#define KWIN_SEPARATE_SCREEN_FOCUS "SeparateScreenFocus"
#define KWIN_ACTIVE_MOUSE_SCREEN   "ActiveMouseScreen"

//CT 15mar 98 - magics
#define KWM_BRDR_SNAP_ZONE                   "BorderSnapZone"
#define KWM_BRDR_SNAP_ZONE_DEFAULT           10
#define KWM_WNDW_SNAP_ZONE                   "WindowSnapZone"
#define KWM_WNDW_SNAP_ZONE_DEFAULT           10
#define KWM_CNTR_SNAP_ZONE                   "CenterSnapZone"
#define KWM_CNTR_SNAP_ZONE_DEFAULT           0

#define MAX_BRDR_SNAP                          100
#define MAX_WNDW_SNAP                          100
#define MAX_CNTR_SNAP                          100
#define MAX_EDGE_RES                          1000

#define  CLICK_TO_FOCUS               0
#define  FOCUS_FOLLOWS_MOUSE          2
#define  FOCUS_UNDER_MOUSE            4
#define  FOCUS_STRICTLY_UNDER_MOUSE   5


KFocusConfig::~KFocusConfig()
{
    if (standAlone)
        delete config;
}

KWinFocusConfigForm::KWinFocusConfigForm(QWidget* parent)
    : QWidget(parent)
{
    setupUi(parent);
}

// removed the LCD display over the slider - this is not good GUI design :) RNolden 051701
KFocusConfig::KFocusConfig(bool _standAlone, KConfig *_config, QWidget * parent)
    : KCModule(parent), config(_config), standAlone(_standAlone)
    , m_ui(new KWinFocusConfigForm(this))
{
    connect(m_ui->focusStealing, SIGNAL(activated(int)), SLOT(changed()));
    connect(m_ui->windowFocusPolicy, SIGNAL(valueChanged(int)), SLOT(changed()));
    connect(m_ui->windowFocusPolicy, SIGNAL(valueChanged(int)), this, SLOT(focusPolicyChanged()));
    connect(m_ui->windowFocusPolicy, SIGNAL(valueChanged(int)), this, SLOT(setDelayFocusEnabled()));
    connect(m_ui->windowFocusPolicy, SIGNAL(valueChanged(int)), this, SLOT(updateActiveMouseScreen()));
    connect(m_ui->autoRaiseOn, SIGNAL(clicked()), SLOT(changed()));
    connect(m_ui->autoRaiseOn, SIGNAL(toggled(bool)), SLOT(autoRaiseOnTog(bool)));
    connect(m_ui->clickRaiseOn, SIGNAL(clicked()), SLOT(changed()));
    connect(m_ui->autoRaise, SIGNAL(valueChanged(int)), SLOT(changed()));
    connect(m_ui->delayFocus, SIGNAL(valueChanged(int)), SLOT(changed()));
    connect(m_ui->separateScreenFocus, SIGNAL(clicked()), SLOT(changed()));
    connect(m_ui->activeMouseScreen, SIGNAL(clicked()), SLOT(changed()));

    connect(QApplication::desktop(), SIGNAL(screenCountChanged(int)), SLOT(updateMultiScreen()));
    updateMultiScreen();

    load();
}

void KFocusConfig::updateMultiScreen()
{
    m_ui->multiscreenBox->setVisible(QApplication::desktop()->screenCount() > 1);
}


int KFocusConfig::getFocus()
{
    int policy = m_ui->windowFocusPolicy->value();
    if (policy == 1 || policy == 3)
        --policy; // fix the NextFocusPrefersMouse condition
    return policy;
}

void KFocusConfig::setFocus(int foc)
{
    m_ui->windowFocusPolicy->setValue(foc);

    // this will disable/hide the auto raise delay widget if focus==click
    focusPolicyChanged();
}

void KFocusConfig::setAutoRaiseInterval(int tb)
{
    m_ui->autoRaise->setValue(tb);
}

void KFocusConfig::setDelayFocusInterval(int tb)
{
    m_ui->delayFocus->setValue(tb);
}

int KFocusConfig::getAutoRaiseInterval()
{
    return m_ui->autoRaise->value();
}

int KFocusConfig::getDelayFocusInterval()
{
    return m_ui->delayFocus->value();
}

void KFocusConfig::setAutoRaise(bool on)
{
    m_ui->autoRaiseOn->setChecked(on);
}

void KFocusConfig::setClickRaise(bool on)
{
    m_ui->clickRaiseOn->setChecked(on);
}

void KFocusConfig::focusPolicyChanged()
{
    int policyIndex = getFocus();

    // the auto raise related widgets are: autoRaise
    m_ui->autoRaiseOn->setEnabled(policyIndex != CLICK_TO_FOCUS);
    autoRaiseOnTog(policyIndex != CLICK_TO_FOCUS && m_ui->autoRaiseOn->isChecked());

    m_ui->focusStealing->setDisabled(policyIndex == FOCUS_UNDER_MOUSE || policyIndex == FOCUS_STRICTLY_UNDER_MOUSE);
    m_ui->focusStealingLabel->setEnabled(m_ui->focusStealing->isEnabled());

    setDelayFocusEnabled();

}

void KFocusConfig::setDelayFocusEnabled()
{
    int policyIndex = getFocus();

    // the delayed focus related widgets are: delayFocus
    m_ui->delayFocusOnLabel->setEnabled(policyIndex != CLICK_TO_FOCUS);
    delayFocusOnTog(policyIndex != CLICK_TO_FOCUS);
}

void KFocusConfig::autoRaiseOnTog(bool a)
{
    m_ui->autoRaise->setEnabled(a);
    m_ui->clickRaiseOn->setEnabled(!a);
}

void KFocusConfig::delayFocusOnTog(bool a)
{
    m_ui->delayFocus->setEnabled(a);
}

void KFocusConfig::setFocusStealing(int l)
{
    l = qMax(0, qMin(4, l));
    m_ui->focusStealing->setCurrentIndex(l);
}

void KFocusConfig::setSeparateScreenFocus(bool s)
{
    m_ui->separateScreenFocus->setChecked(s);
}

void KFocusConfig::setActiveMouseScreen(bool a)
{
    m_ui->activeMouseScreen->setChecked(a);
}

void KFocusConfig::updateActiveMouseScreen()
{
    // on by default for non click to focus policies
    KConfigGroup cfg(config, "Windows");
    if (!cfg.hasKey(KWIN_ACTIVE_MOUSE_SCREEN))
        setActiveMouseScreen(getFocus() != 0);
}

void KFocusConfig::showEvent(QShowEvent *ev)
{
    if (!standAlone) {
        QWidget::showEvent(ev);
        return;
    }
    KCModule::showEvent(ev);
}

void KFocusConfig::load(void)
{
    QString key;

    KConfigGroup cg(config, "Windows");

    const bool focusNextToMouse = cg.readEntry("NextFocusPrefersMouse", false);

    key = cg.readEntry(KWIN_FOCUS);
    if (key == "ClickToFocus")
        setFocus(CLICK_TO_FOCUS + focusNextToMouse);
    else if (key == "FocusFollowsMouse")
        setFocus(FOCUS_FOLLOWS_MOUSE + focusNextToMouse);
    else if (key == "FocusUnderMouse")
        setFocus(FOCUS_UNDER_MOUSE);
    else if (key == "FocusStrictlyUnderMouse")
        setFocus(FOCUS_STRICTLY_UNDER_MOUSE);

    int k = cg.readEntry(KWIN_AUTORAISE_INTERVAL, 750);
    setAutoRaiseInterval(k);

    k = cg.readEntry(KWIN_DELAYFOCUS_INTERVAL, 300);
    setDelayFocusInterval(k);

    setAutoRaise(cg.readEntry(KWIN_AUTORAISE, false));
    setClickRaise(cg.readEntry(KWIN_CLICKRAISE, true));
    focusPolicyChanged();      // this will disable/hide the auto raise delay widget if focus==click

    setSeparateScreenFocus(cg.readEntry(KWIN_SEPARATE_SCREEN_FOCUS, false));
    // on by default for non click to focus policies
    setActiveMouseScreen(cg.readEntry(KWIN_ACTIVE_MOUSE_SCREEN, getFocus() != 0));

//    setFocusStealing( cg.readEntry(KWIN_FOCUS_STEALING, 2 ));
    // TODO default to low for now
    setFocusStealing(cg.readEntry(KWIN_FOCUS_STEALING, 1));


    emit KCModule::changed(false);
}

void KFocusConfig::save(void)
{
    int v;

    KConfigGroup cg(config, "Windows");

    v = getFocus();
    if (v == CLICK_TO_FOCUS)
        cg.writeEntry(KWIN_FOCUS, "ClickToFocus");
    else if (v == FOCUS_UNDER_MOUSE)
        cg.writeEntry(KWIN_FOCUS, "FocusUnderMouse");
    else if (v == FOCUS_STRICTLY_UNDER_MOUSE)
        cg.writeEntry(KWIN_FOCUS, "FocusStrictlyUnderMouse");
    else
        cg.writeEntry(KWIN_FOCUS, "FocusFollowsMouse");

    cg.writeEntry("NextFocusPrefersMouse", v != m_ui->windowFocusPolicy->value());

    v = getAutoRaiseInterval();
    if (v < 0) v = 0;
    cg.writeEntry(KWIN_AUTORAISE_INTERVAL, v);

    v = getDelayFocusInterval();
    if (v < 0) v = 0;
    cg.writeEntry(KWIN_DELAYFOCUS_INTERVAL, v);

    cg.writeEntry(KWIN_AUTORAISE, m_ui->autoRaiseOn->isChecked());

    cg.writeEntry(KWIN_CLICKRAISE, m_ui->clickRaiseOn->isChecked());

    cg.writeEntry(KWIN_SEPARATE_SCREEN_FOCUS, m_ui->separateScreenFocus->isChecked());
    cg.writeEntry(KWIN_ACTIVE_MOUSE_SCREEN, m_ui->activeMouseScreen->isChecked());

    cg.writeEntry(KWIN_FOCUS_STEALING, m_ui->focusStealing->currentIndex());

    cg.writeEntry(KWIN_SEPARATE_SCREEN_FOCUS, m_ui->separateScreenFocus->isChecked());
    cg.writeEntry(KWIN_ACTIVE_MOUSE_SCREEN, m_ui->activeMouseScreen->isChecked());


    if (standAlone) {
        config->sync();
        // Send signal to all kwin instances
        QDBusMessage message =
            QDBusMessage::createSignal("/KWin", "org.kde.KWin", "reloadConfig");
        QDBusConnection::sessionBus().send(message);
    }
    emit KCModule::changed(false);
}

void KFocusConfig::defaults()
{
    setAutoRaiseInterval(0);
    setDelayFocusInterval(0);
    setFocus(CLICK_TO_FOCUS);
    setAutoRaise(false);
    setClickRaise(true);
    setSeparateScreenFocus(false);

//    setFocusStealing(2);
    // TODO default to low for now
    setFocusStealing(1);

    // on by default for non click to focus policies
    setActiveMouseScreen(getFocus() != 0);
    setDelayFocusEnabled();
    emit KCModule::changed(true);
}

KWinAdvancedConfigForm::KWinAdvancedConfigForm(QWidget* parent)
    : QWidget(parent)
{
    setupUi(parent);
}

KAdvancedConfig::~KAdvancedConfig()
{
    if (standAlone)
        delete config;
}

KAdvancedConfig::KAdvancedConfig(bool _standAlone, KConfig *_config, QWidget *parent)
    : KCModule(parent), config(_config), standAlone(_standAlone)
    , m_ui(new KWinAdvancedConfigForm(this))
{
    m_ui->placementCombo->setItemData(0, "Smart");
    m_ui->placementCombo->setItemData(1, "Maximizing");
    m_ui->placementCombo->setItemData(2, "Cascade");
    m_ui->placementCombo->setItemData(3, "Random");
    m_ui->placementCombo->setItemData(4, "Centered");
    m_ui->placementCombo->setItemData(5, "ZeroCornered");
    m_ui->placementCombo->setItemData(6, "UnderMouse");

    connect(m_ui->shadeHoverOn, SIGNAL(toggled(bool)), this, SLOT(shadeHoverChanged(bool)));
    connect(m_ui->inactiveTabsSkipTaskbar, SIGNAL(toggled(bool)), SLOT(changed()));
    connect(m_ui->autogroupSimilarWindows, SIGNAL(toggled(bool)), SLOT(changed()));
    connect(m_ui->autogroupInForeground, SIGNAL(toggled(bool)), SLOT(changed()));
    connect(m_ui->shadeHoverOn, SIGNAL(toggled(bool)), SLOT(changed()));
    connect(m_ui->shadeHover, SIGNAL(valueChanged(int)), SLOT(changed()));
    connect(m_ui->placementCombo, SIGNAL(activated(int)), SLOT(changed()));
    connect(m_ui->hideUtilityWindowsForInactive, SIGNAL(toggled(bool)), SLOT(changed()));
    m_ui->inactiveTabsSkipTaskbar->setVisible(false);   // TODO: We want translations in case this is fixed...
    load();

}

void KAdvancedConfig::setShadeHover(bool on)
{
    m_ui->shadeHoverOn->setChecked(on);
    m_ui->shadeHoverLabel->setEnabled(on);
    m_ui->shadeHover->setEnabled(on);
}

void KAdvancedConfig::setShadeHoverInterval(int k)
{
    m_ui->shadeHover->setValue(k);
}

int KAdvancedConfig::getShadeHoverInterval()
{

    return m_ui->shadeHover->value();
}

void KAdvancedConfig::shadeHoverChanged(bool a)
{
    m_ui->shadeHoverLabel->setEnabled(a);
    m_ui->shadeHover->setEnabled(a);
}

void KAdvancedConfig::showEvent(QShowEvent *ev)
{
    if (!standAlone) {
        QWidget::showEvent(ev);
        return;
    }
    KCModule::showEvent(ev);
}

void KAdvancedConfig::load(void)
{
    KConfigGroup cg(config, "Windows");

    setShadeHover(cg.readEntry(KWIN_SHADEHOVER, false));
    setShadeHoverInterval(cg.readEntry(KWIN_SHADEHOVER_INTERVAL, 250));

    QString key;
    key = cg.readEntry(KWIN_PLACEMENT);
    int idx = m_ui->placementCombo->findData(key);
    if (idx < 0)
        idx = m_ui->placementCombo->findData("Smart");
    m_ui->placementCombo->setCurrentIndex(idx);

    setHideUtilityWindowsForInactive(cg.readEntry(KWIN_HIDE_UTILITY, true));
    setInactiveTabsSkipTaskbar(cg.readEntry(KWIN_INACTIVE_SKIP_TASKBAR, false));
    setAutogroupSimilarWindows(cg.readEntry(KWIN_AUTOGROUP_SIMILAR, false));
    setAutogroupInForeground(cg.readEntry(KWIN_AUTOGROUP_FOREGROUND, true));

    emit KCModule::changed(false);
}

void KAdvancedConfig::save(void)
{
    int v;

    KConfigGroup cg(config, "Windows");
    cg.writeEntry(KWIN_SHADEHOVER, m_ui->shadeHoverOn->isChecked());

    v = getShadeHoverInterval();
    if (v < 0) v = 0;
    cg.writeEntry(KWIN_SHADEHOVER_INTERVAL, v);

    cg.writeEntry(KWIN_PLACEMENT, m_ui->placementCombo->itemData(m_ui->placementCombo->currentIndex()).toString());

    cg.writeEntry(KWIN_HIDE_UTILITY, m_ui->hideUtilityWindowsForInactive->isChecked());
    cg.writeEntry(KWIN_INACTIVE_SKIP_TASKBAR, m_ui->inactiveTabsSkipTaskbar->isChecked());
    cg.writeEntry(KWIN_AUTOGROUP_SIMILAR, m_ui->autogroupSimilarWindows->isChecked());
    cg.writeEntry(KWIN_AUTOGROUP_FOREGROUND, m_ui->autogroupInForeground->isChecked());

    if (standAlone) {
        config->sync();
        // Send signal to all kwin instances
        QDBusMessage message =
            QDBusMessage::createSignal("/KWin", "org.kde.KWin", "reloadConfig");
        QDBusConnection::sessionBus().send(message);

    }
    emit KCModule::changed(false);
}

void KAdvancedConfig::defaults()
{
    setShadeHover(false);
    setShadeHoverInterval(250);
    m_ui->placementCombo->setCurrentIndex(0); // default to Smart
    setHideUtilityWindowsForInactive(true);
    setInactiveTabsSkipTaskbar(false);
    setAutogroupSimilarWindows(false);
    setAutogroupInForeground(true);
    emit KCModule::changed(true);
}


void KAdvancedConfig::setHideUtilityWindowsForInactive(bool s)
{
    m_ui->hideUtilityWindowsForInactive->setChecked(s);
}

void KAdvancedConfig::setInactiveTabsSkipTaskbar(bool s)
{
    m_ui->inactiveTabsSkipTaskbar->setChecked(s);
}

void KAdvancedConfig::setAutogroupSimilarWindows(bool s)
{
    m_ui->autogroupSimilarWindows->setChecked(s);
}

void KAdvancedConfig::setAutogroupInForeground(bool s)
{
    m_ui->autogroupInForeground->setChecked(s);
}

KWinMovingConfigForm::KWinMovingConfigForm(QWidget* parent)
    : QWidget(parent)
{
    setupUi(parent);
}

KMovingConfig::~KMovingConfig()
{
    if (standAlone)
        delete config;
}

KMovingConfig::KMovingConfig(bool _standAlone, KConfig *_config, QWidget *parent)
    : KCModule(parent), config(_config), standAlone(_standAlone)
    , m_ui(new KWinMovingConfigForm(this))
{
    // Any changes goes to slotChanged()
    connect(m_ui->geometryTipOn, SIGNAL(clicked()), SLOT(changed()));
    connect(m_ui->borderSnap, SIGNAL(valueChanged(int)), SLOT(changed()));
    connect(m_ui->windowSnap, SIGNAL(valueChanged(int)), SLOT(changed()));
    connect(m_ui->centerSnap, SIGNAL(valueChanged(int)), SLOT(changed()));
    connect(m_ui->OverlapSnap, SIGNAL(clicked()), SLOT(changed()));

    load();
}

void KMovingConfig::setGeometryTip(bool showGeometryTip)
{
    m_ui->geometryTipOn->setChecked(showGeometryTip);
}

bool KMovingConfig::getGeometryTip()
{
    return m_ui->geometryTipOn->isChecked();
}

void KMovingConfig::showEvent(QShowEvent *ev)
{
    if (!standAlone) {
        QWidget::showEvent(ev);
        return;
    }
    KCModule::showEvent(ev);
}

void KMovingConfig::load(void)
{
    QString key;

    KConfigGroup cg(config, "Windows");

    //KS 10Jan2003 - Geometry Tip during window move/resize
    bool showGeomTip = cg.readEntry(KWIN_GEOMETRY, false);
    setGeometryTip(showGeomTip);


    int v;

    v = cg.readEntry(KWM_BRDR_SNAP_ZONE, KWM_BRDR_SNAP_ZONE_DEFAULT);
    if (v > MAX_BRDR_SNAP) setBorderSnapZone(MAX_BRDR_SNAP);
    else if (v < 0) setBorderSnapZone(0);
    else setBorderSnapZone(v);

    v = cg.readEntry(KWM_WNDW_SNAP_ZONE, KWM_WNDW_SNAP_ZONE_DEFAULT);
    if (v > MAX_WNDW_SNAP) setWindowSnapZone(MAX_WNDW_SNAP);
    else if (v < 0) setWindowSnapZone(0);
    else setWindowSnapZone(v);

    v = cg.readEntry(KWM_CNTR_SNAP_ZONE, KWM_CNTR_SNAP_ZONE_DEFAULT);
    if (v > MAX_CNTR_SNAP) setCenterSnapZone(MAX_CNTR_SNAP);
    else if (v < 0) setCenterSnapZone(0);
    else setCenterSnapZone(v);

    m_ui->OverlapSnap->setChecked(cg.readEntry("SnapOnlyWhenOverlapping", false));
    emit KCModule::changed(false);
}

void KMovingConfig::save(void)
{
    KConfigGroup cg(config, "Windows");
    cg.writeEntry(KWIN_GEOMETRY, getGeometryTip());


    cg.writeEntry(KWM_BRDR_SNAP_ZONE, getBorderSnapZone());
    cg.writeEntry(KWM_WNDW_SNAP_ZONE, getWindowSnapZone());
    cg.writeEntry(KWM_CNTR_SNAP_ZONE, getCenterSnapZone());
    cg.writeEntry("SnapOnlyWhenOverlapping", m_ui->OverlapSnap->isChecked());

    KConfigGroup(config, "Plugins").writeEntry("kwin4_effect_windowgeometryEnabled", getGeometryTip());

    if (standAlone) {
        config->sync();
        // Send signal to all kwin instances
        QDBusMessage message =
            QDBusMessage::createSignal("/KWin", "org.kde.KWin", "reloadConfig");
        QDBusConnection::sessionBus().send(message);
    }
    emit KCModule::changed(false);
}

void KMovingConfig::defaults()
{
    setGeometryTip(false);

    //copied from kcontrol/konq/kwindesktop, aleXXX
    setWindowSnapZone(KWM_WNDW_SNAP_ZONE_DEFAULT);
    setBorderSnapZone(KWM_BRDR_SNAP_ZONE_DEFAULT);
    setCenterSnapZone(KWM_CNTR_SNAP_ZONE_DEFAULT);
    m_ui->OverlapSnap->setChecked(false);

    emit KCModule::changed(true);
}

int KMovingConfig::getBorderSnapZone()
{
    return m_ui->borderSnap->value();
}

void KMovingConfig::setBorderSnapZone(int pxls)
{
    m_ui->borderSnap->setValue(pxls);
}

int KMovingConfig::getWindowSnapZone()
{
    return m_ui->windowSnap->value();
}

void KMovingConfig::setWindowSnapZone(int pxls)
{
    m_ui->windowSnap->setValue(pxls);
}

int KMovingConfig::getCenterSnapZone()
{
    return m_ui->centerSnap->value();
}

void KMovingConfig::setCenterSnapZone(int pxls)
{
    m_ui->centerSnap->setValue(pxls);
}

#include "windows.moc"