/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the Qt Designer of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#include "treewidgeteditor.h"

#include <formwindowbase_p.h>

#include <iconloader_p.h>

#include <qdesigner_command_p.h>

#include <qdesigner_utils_p.h>

#include <abstractformbuilder.h>

#include <designerpropertymanager.h>

#include <qttreepropertybrowser.h>

#include <QtDesigner/QDesignerFormWindowInterface>

#include <QtDesigner/QDesignerFormEditorInterface>

#include <QtDesigner/QDesignerIconCacheInterface>

#include <QtCore/QDir>

#include <QtCore/QQueue>

#include <QtGui/QHeaderView>

#include <QtGui/QTreeWidgetItemIterator>

QT_BEGIN_NAMESPACE

namespace qdesigner_internal {

TreeWidgetEditor::TreeWidgetEditor(QDesignerFormWindowInterface *form, QWidget *parent)

    : AbstractItemEditor(form, parent), m_updatingBrowser(false)

{

    m_columnEditor = new ItemListEditor(form, this);

    m_columnEditor->setObjectName(QLatin1String("columnEditor"));

    m_columnEditor->setNewItemText(tr("New Column"));

    ui.setupUi(this);

    injectPropertyBrowser(ui.itemsTab, ui.widget);

    connect(ui.showPropertiesButton, SIGNAL(clicked()),

            this, SLOT(togglePropertyBrowser()));

    togglePropertyBrowser();

    ui.tabWidget->insertTab(0, m_columnEditor, tr("&Columns"));

    ui.tabWidget->setCurrentIndex(0);

    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);

    ui.newItemButton->setIcon(createIconSet(QString::fromUtf8("plus.png")));

    ui.newSubItemButton->setIcon(createIconSet(QString::fromUtf8("downplus.png")));

    ui.deleteItemButton->setIcon(createIconSet(QString::fromUtf8("minus.png")));

    ui.moveItemUpButton->setIcon(createIconSet(QString::fromUtf8("up.png")));

    ui.moveItemDownButton->setIcon(createIconSet(QString::fromUtf8("down.png")));

    ui.moveItemRightButton->setIcon(createIconSet(QString::fromUtf8("leveldown.png")));

    ui.moveItemLeftButton->setIcon(createIconSet(QString::fromUtf8("levelup.png")));

    ui.treeWidget->header()->setMovable(false);

    connect(iconCache(), SIGNAL(reloaded()), this, SLOT(cacheReloaded()));

}

static AbstractItemEditor::PropertyDefinition treeHeaderPropList[] = {

    { Qt::DisplayPropertyRole, 0, DesignerPropertyManager::designerStringTypeId, "text" },

    { Qt::DecorationPropertyRole, 0, DesignerPropertyManager::designerIconTypeId, "icon" },

    { Qt::ToolTipPropertyRole, 0, DesignerPropertyManager::designerStringTypeId, "toolTip" },

    { Qt::StatusTipPropertyRole, 0, DesignerPropertyManager::designerStringTypeId, "statusTip" },

    { Qt::WhatsThisPropertyRole, 0, DesignerPropertyManager::designerStringTypeId, "whatsThis" },

    { Qt::FontRole, QVariant::Font, 0, "font" },

    { Qt::TextAlignmentRole, 0, DesignerPropertyManager::designerAlignmentTypeId, "textAlignment" },

    { Qt::BackgroundRole, QVariant::Color, 0, "background" },

    { Qt::ForegroundRole, QVariant::Brush, 0, "foreground" },

    { 0, 0, 0, 0 }

};

static AbstractItemEditor::PropertyDefinition treeItemColumnPropList[] = {

    { Qt::DisplayPropertyRole, 0, DesignerPropertyManager::designerStringTypeId, "text" },

    { Qt::DecorationPropertyRole, 0, DesignerPropertyManager::designerIconTypeId, "icon" },

    { Qt::ToolTipPropertyRole, 0, DesignerPropertyManager::designerStringTypeId, "toolTip" },

    { Qt::StatusTipPropertyRole, 0, DesignerPropertyManager::designerStringTypeId, "statusTip" },

    { Qt::WhatsThisPropertyRole, 0, DesignerPropertyManager::designerStringTypeId, "whatsThis" },

    { Qt::FontRole, QVariant::Font, 0, "font" },

    { Qt::TextAlignmentRole, 0, DesignerPropertyManager::designerAlignmentTypeId, "textAlignment" },

    { Qt::BackgroundRole, QVariant::Brush, 0, "background" },

    { Qt::ForegroundRole, QVariant::Brush, 0, "foreground" },

    { Qt::CheckStateRole, 0, QtVariantPropertyManager::enumTypeId, "checkState" },

    { 0, 0, 0, 0 }

};

static AbstractItemEditor::PropertyDefinition treeItemCommonPropList[] = {

    { ItemFlagsShadowRole, 0, QtVariantPropertyManager::flagTypeId, "flags" },

    { 0, 0, 0, 0 }

};

QtVariantProperty *TreeWidgetEditor::setupPropertyGroup(const QString &title, PropertyDefinition *propDefs)

{

    setupProperties(propDefs);

    QtVariantProperty *groupProp = m_propertyManager->addProperty(QtVariantPropertyManager::groupTypeId(), title);

    foreach (QtVariantProperty *prop, m_rootProperties)

        groupProp->addSubProperty(prop);

    m_rootProperties.clear();

    return groupProp;

}

TreeWidgetContents TreeWidgetEditor::fillContentsFromTreeWidget(QTreeWidget *treeWidget)

{

    TreeWidgetContents treeCont;

    treeCont.fromTreeWidget(treeWidget, false);

    treeCont.applyToTreeWidget(ui.treeWidget, iconCache(), true);

    treeCont.m_headerItem.applyToListWidget(m_columnEditor->listWidget(), iconCache(), true);

    m_columnEditor->setupEditor(treeWidget, treeHeaderPropList);

    QList<QtVariantProperty*> rootProperties;

    rootProperties.append(setupPropertyGroup(tr("Per column properties"), treeItemColumnPropList));

    rootProperties.append(setupPropertyGroup(tr("Common properties"), treeItemCommonPropList));

    m_rootProperties = rootProperties;

    m_propertyBrowser->setPropertiesWithoutValueMarked(true);

    m_propertyBrowser->setRootIsDecorated(false);

    setupObject(treeWidget);

    if (ui.treeWidget->topLevelItemCount() > 0)

        ui.treeWidget->setCurrentItem(ui.treeWidget->topLevelItem(0));

    updateEditor();

    return treeCont;

}

TreeWidgetContents TreeWidgetEditor::contents() const

{

    TreeWidgetContents retVal;

    retVal.fromTreeWidget(ui.treeWidget, true);

    return retVal;

}

void TreeWidgetEditor::setItemData(int role, const QVariant &v)

{

    const int col = (role == ItemFlagsShadowRole) ? 0 : ui.treeWidget->currentColumn();

    QVariant newValue = v;

    BoolBlocker block(m_updatingBrowser);

    if (role == Qt::FontRole && newValue.type() == QVariant::Font) {

        QFont oldFont = ui.treeWidget->font();

        QFont newFont = qVariantValue<QFont>(newValue).resolve(oldFont);

        newValue = qVariantFromValue(newFont);

        ui.treeWidget->currentItem()->setData(col, role, QVariant()); // force the right font with the current resolve mask is set (item view bug)

    }

    ui.treeWidget->currentItem()->setData(col, role, newValue);

}

QVariant TreeWidgetEditor::getItemData(int role) const

{

    const int col = (role == ItemFlagsShadowRole) ? 0 : ui.treeWidget->currentColumn();

    return ui.treeWidget->currentItem()->data(col, role);

}

void TreeWidgetEditor::on_newItemButton_clicked()

{

    QTreeWidgetItem *curItem = ui.treeWidget->currentItem();

    QTreeWidgetItem *newItem = 0;

    ui.treeWidget->blockSignals(true);

    if (curItem) {

        if (curItem->parent())

            newItem = new QTreeWidgetItem(curItem->parent(), curItem);

        else

            newItem = new QTreeWidgetItem(ui.treeWidget, curItem);

    } else

        newItem = new QTreeWidgetItem(ui.treeWidget);

    const QString newItemText = tr("New Item");

    newItem->setText(0, newItemText);

    newItem->setData(0, Qt::DisplayPropertyRole, qVariantFromValue(PropertySheetStringValue(newItemText)));

    newItem->setFlags(newItem->flags() | Qt::ItemIsEditable);

    ui.treeWidget->blockSignals(false);

    ui.treeWidget->setCurrentItem(newItem, qMax(ui.treeWidget->currentColumn(), 0));

    updateEditor();

    ui.treeWidget->editItem(newItem, ui.treeWidget->currentColumn());

}

void TreeWidgetEditor::on_newSubItemButton_clicked()

{

    QTreeWidgetItem *curItem = ui.treeWidget->currentItem();

    if (!curItem)

        return;

    ui.treeWidget->blockSignals(true);

    QTreeWidgetItem *newItem = new QTreeWidgetItem(curItem);

    const QString newItemText = tr("New Subitem");

    newItem->setText(0, newItemText);

    newItem->setData(0, Qt::DisplayPropertyRole, qVariantFromValue(PropertySheetStringValue(newItemText)));

    newItem->setFlags(newItem->flags() | Qt::ItemIsEditable);

    ui.treeWidget->blockSignals(false);

    ui.treeWidget->setCurrentItem(newItem, ui.treeWidget->currentColumn());

    updateEditor();

    ui.treeWidget->editItem(newItem, ui.treeWidget->currentColumn());

}

void TreeWidgetEditor::on_deleteItemButton_clicked()

{

    QTreeWidgetItem *curItem = ui.treeWidget->currentItem();

    if (!curItem)

        return;

    QTreeWidgetItem *nextCurrent = 0;

    if (curItem->parent()) {

        int idx = curItem->parent()->indexOfChild(curItem);

        if (idx == curItem->parent()->childCount() - 1)

            idx--;

        else

            idx++;

        if (idx < 0)

            nextCurrent = curItem->parent();

        else

            nextCurrent = curItem->parent()->child(idx);

    } else {

        int idx = ui.treeWidget->indexOfTopLevelItem(curItem);

        if (idx == ui.treeWidget->topLevelItemCount() - 1)

            idx--;

        else

            idx++;

        if (idx >= 0)

            nextCurrent = ui.treeWidget->topLevelItem(idx);

    }

    closeEditors();

    ui.treeWidget->blockSignals(true);

    delete curItem;

    ui.treeWidget->blockSignals(false);

    if (nextCurrent)

        ui.treeWidget->setCurrentItem(nextCurrent, ui.treeWidget->currentColumn());

    updateEditor();

}

void TreeWidgetEditor::on_moveItemUpButton_clicked()

{

    QTreeWidgetItem *curItem = ui.treeWidget->currentItem();

    if (!curItem)

        return;

    int idx;

    if (curItem->parent())

        idx = curItem->parent()->indexOfChild(curItem);

    else

        idx = ui.treeWidget->indexOfTopLevelItem(curItem);

    if (idx == 0)

        return;

    QTreeWidgetItem *takenItem;

    ui.treeWidget->blockSignals(true);

    if (curItem->parent()) {

        QTreeWidgetItem *parentItem = curItem->parent();

        takenItem = parentItem->takeChild(idx);

        parentItem->insertChild(idx - 1, takenItem);

    } else {

        takenItem = ui.treeWidget->takeTopLevelItem(idx);

        ui.treeWidget->insertTopLevelItem(idx - 1, takenItem);

    }

    ui.treeWidget->blockSignals(false);

    ui.treeWidget->setCurrentItem(takenItem, ui.treeWidget->currentColumn());

    updateEditor();

}

void TreeWidgetEditor::on_moveItemDownButton_clicked()

{

    QTreeWidgetItem *curItem = ui.treeWidget->currentItem();

    if (!curItem)

        return;

    int idx, idxCount;

    if (curItem->parent()) {

        idx = curItem->parent()->indexOfChild(curItem);

        idxCount = curItem->parent()->childCount();

    } else {

        idx = ui.treeWidget->indexOfTopLevelItem(curItem);

        idxCount = ui.treeWidget->topLevelItemCount();

    }

    if (idx == idxCount - 1)

        return;

    QTreeWidgetItem *takenItem;

    ui.treeWidget->blockSignals(true);

    if (curItem->parent()) {

        QTreeWidgetItem *parentItem = curItem->parent();

        takenItem = parentItem->takeChild(idx);

        parentItem->insertChild(idx + 1, takenItem);

    } else {

        takenItem = ui.treeWidget->takeTopLevelItem(idx);

        ui.treeWidget->insertTopLevelItem(idx + 1, takenItem);

    }

    ui.treeWidget->blockSignals(false);

    ui.treeWidget->setCurrentItem(takenItem, ui.treeWidget->currentColumn());

    updateEditor();

}

void TreeWidgetEditor::on_moveItemLeftButton_clicked()

{

    QTreeWidgetItem *curItem = ui.treeWidget->currentItem();

    if (!curItem)

        return;

    QTreeWidgetItem *parentItem = curItem->parent();

    if (!parentItem)

        return;

    ui.treeWidget->blockSignals(true);

    QTreeWidgetItem *takenItem = parentItem->takeChild(parentItem->indexOfChild(curItem));

    if (parentItem->parent()) {

        int idx = parentItem->parent()->indexOfChild(parentItem);

        parentItem->parent()->insertChild(idx, takenItem);

    } else {

        int idx = ui.treeWidget->indexOfTopLevelItem(parentItem);

        ui.treeWidget->insertTopLevelItem(idx, takenItem);

    }

    ui.treeWidget->blockSignals(false);

    ui.treeWidget->setCurrentItem(takenItem, ui.treeWidget->currentColumn());

    updateEditor();

}

void TreeWidgetEditor::on_moveItemRightButton_clicked()

{

    QTreeWidgetItem *curItem = ui.treeWidget->currentItem();

    if (!curItem)

        return;

    int idx, idxCount;

    if (curItem->parent()) {

        idx = curItem->parent()->indexOfChild(curItem);

        idxCount = curItem->parent()->childCount();

    } else {

        idx = ui.treeWidget->indexOfTopLevelItem(curItem);

        idxCount = ui.treeWidget->topLevelItemCount();

    }

    if (idx == idxCount - 1)

        return;

    QTreeWidgetItem *takenItem;

    ui.treeWidget->blockSignals(true);

    if (curItem->parent()) {

        QTreeWidgetItem *parentItem = curItem->parent()->child(idx + 1);

        takenItem = curItem->parent()->takeChild(idx);

        parentItem->insertChild(0, takenItem);

    } else {

        QTreeWidgetItem *parentItem = ui.treeWidget->topLevelItem(idx + 1);

        takenItem = ui.treeWidget->takeTopLevelItem(idx);

        parentItem->insertChild(0, takenItem);

    }

    ui.treeWidget->blockSignals(false);

    ui.treeWidget->setCurrentItem(takenItem, ui.treeWidget->currentColumn());

    updateEditor();

}

void TreeWidgetEditor::togglePropertyBrowser()

{

    // Always hide in case parent widget is not visible -> on startup

    const bool isVisible =

            !this->isVisible() ? true : m_propertyBrowser->isVisible();

    if (isVisible)

        ui.showPropertiesButton->setText(tr("Properties &<<"));

    else

        ui.showPropertiesButton->setText(tr("Properties &>>"));

    m_propertyBrowser->setVisible(!isVisible);

}

void TreeWidgetEditor::on_treeWidget_currentItemChanged()

{

    m_columnEditor->setCurrentIndex(ui.treeWidget->currentColumn());

    updateEditor();

}

void TreeWidgetEditor::on_treeWidget_itemChanged(QTreeWidgetItem *item, int column)

{

    if (m_updatingBrowser)

        return;

    PropertySheetStringValue val = qVariantValue<PropertySheetStringValue>(item->data(column, Qt::DisplayPropertyRole));

    val.setValue(item->text(column));

    BoolBlocker block(m_updatingBrowser);

    item->setData(column, Qt::DisplayPropertyRole, qVariantFromValue(val));

    updateBrowser();

}

void TreeWidgetEditor::on_columnEditor_indexChanged(int idx)

{

    if (QTreeWidgetItem *item = ui.treeWidget->currentItem())

        ui.treeWidget->setCurrentItem(item, idx);

}

void TreeWidgetEditor::on_columnEditor_itemChanged(int idx, int role, const QVariant &v)

{

    if (role == Qt::DisplayPropertyRole)

        ui.treeWidget->headerItem()->setData(idx, Qt::EditRole, qVariantValue<PropertySheetStringValue>(v).value());

    ui.treeWidget->headerItem()->setData(idx, role, v);

}

void TreeWidgetEditor::updateEditor()

{

    QTreeWidgetItem *current = ui.treeWidget->currentItem();

    bool itemsEnabled = false;

    bool currentItemEnabled = false;

    bool moveItemUpEnabled = false;

    bool moveItemDownEnabled = false;

    bool moveItemRightEnabled = false;

    bool moveItemLeftEnabled = false;

    if (ui.treeWidget->columnCount() > 0) {

        itemsEnabled = true;

        if (current) {

            int idx;

            int idxCount;

            currentItemEnabled = true;

            if (current->parent()) {

                moveItemLeftEnabled = true;

                idx = current->parent()->indexOfChild(current);

                idxCount = current->parent()->childCount();

            } else {

                idx = ui.treeWidget->indexOfTopLevelItem(current);

                idxCount = ui.treeWidget->topLevelItemCount();

            }

            if (idx > 0)

                moveItemUpEnabled = true;

            if (idx < idxCount - 1) {

                moveItemDownEnabled = true;

                moveItemRightEnabled = true;

            }

        }

    }

    ui.tabWidget->setTabEnabled(1, itemsEnabled);

    ui.newSubItemButton->setEnabled(currentItemEnabled);

    ui.deleteItemButton->setEnabled(currentItemEnabled);

    ui.moveItemUpButton->setEnabled(moveItemUpEnabled);

    ui.moveItemDownButton->setEnabled(moveItemDownEnabled);

    ui.moveItemRightButton->setEnabled(moveItemRightEnabled);

    ui.moveItemLeftButton->setEnabled(moveItemLeftEnabled);

    if (current)

        updateBrowser();

    else

        m_propertyBrowser->clear();

}

void TreeWidgetEditor::moveColumnItems(const PropertyDefinition *propList,

        QTreeWidgetItem *item, int fromColumn, int toColumn, int step)

{

    BoolBlocker block(m_updatingBrowser);

    QList<QVariant> saveCol;

    for (int j = 0; propList[j].name; j++)

        saveCol.append(item->data(toColumn, propList[j].role));

    QVariant editVariant = item->data(toColumn, Qt::EditRole);

    QVariant toolTipVariant = item->data(toColumn, Qt::ToolTipRole);

    QVariant statusTipVariant = item->data(toColumn, Qt::StatusTipRole);

    QVariant whatsThisVariant = item->data(toColumn, Qt::WhatsThisRole);

    QVariant decorationVariant = item->data(toColumn, Qt::DecorationRole);

    for (int i = toColumn; i != fromColumn; i += step) {

        for (int j = 0; propList[j].name; j++)

            item->setData(i, propList[j].role, item->data(i + step, propList[j].role));

        item->setData(i, Qt::EditRole, item->data(i + step, Qt::EditRole));

        item->setData(i, Qt::ToolTipRole, item->data(i + step, Qt::ToolTipRole));

        item->setData(i, Qt::StatusTipRole, item->data(i + step, Qt::StatusTipRole));

        item->setData(i, Qt::WhatsThisRole, item->data(i + step, Qt::WhatsThisRole));

        item->setData(i, Qt::DecorationRole, item->data(i + step, Qt::DecorationRole));

    }

    for (int j = 0; propList[j].name; j++)

        item->setData(fromColumn, propList[j].role, saveCol[j]);

    item->setData(fromColumn, Qt::EditRole, editVariant);

    item->setData(fromColumn, Qt::ToolTipRole, toolTipVariant);

    item->setData(fromColumn, Qt::StatusTipRole, statusTipVariant);

    item->setData(fromColumn, Qt::WhatsThisRole, whatsThisVariant);

    item->setData(fromColumn, Qt::DecorationRole, decorationVariant);

}

void TreeWidgetEditor::moveColumns(int fromColumn, int toColumn, int step)

{

    ui.treeWidget->blockSignals(true);

    moveColumnItems(treeHeaderPropList, ui.treeWidget->headerItem(), fromColumn, toColumn, step);

    QQueue<QTreeWidgetItem *> pendingQueue;

    for (int i = 0; i < ui.treeWidget->topLevelItemCount(); i++)

        pendingQueue.enqueue(ui.treeWidget->topLevelItem(i));

    while (!pendingQueue.isEmpty()) {

        QTreeWidgetItem *item = pendingQueue.dequeue();

        for (int i = 0; i < item->childCount(); i++)

            pendingQueue.enqueue(item->child(i));

        moveColumnItems(treeItemColumnPropList, item, fromColumn, toColumn, step);

    }