findresultmodel.cpp
author insilmaril
Mon, 08 Mar 2010 12:24:26 +0000
changeset 829 832e96c9abb6
parent 825 1ad892c1a709
child 831 25a950c2eb98
permissions -rw-r--r--
Introduce dockwidget to display all search results at once
     1 #include <QtGui>
     2 
     3 #include "findresultitem.h"
     4 #include "findresultmodel.h"
     5 #include "treeitem.h"
     6 
     7 FindResultModel::FindResultModel( QObject *parent)
     8     : QAbstractItemModel(parent)
     9 {
    10     QVector<QVariant> rootData;
    11 	rootData << "Heading";
    12 
    13     rootItem = new FindResultItem(rootData);
    14     //setupModelData(data.split(QString("\n")), rootItem);
    15 }
    16 
    17 FindResultModel::~FindResultModel()
    18 {
    19     delete rootItem;
    20 }
    21 
    22 void FindResultModel::clear()
    23 {
    24 	if (rootItem->childCount()>0)
    25 	{
    26 		//QModelIndex ix=createIndex(0,0,rootItem);
    27 		removeRows (0,rowCount (QModelIndex ()));
    28 	}
    29 }
    30 
    31 int FindResultModel::columnCount(const QModelIndex & /* parent */) const
    32 {
    33     return rootItem->columnCount();
    34 }
    35 
    36 QVariant FindResultModel::data(const QModelIndex &index, int role) const
    37 {
    38     if (!index.isValid())
    39         return QVariant();
    40 
    41     if (role != Qt::DisplayRole && role != Qt::EditRole)
    42         return QVariant();
    43 
    44     FindResultItem *item = getItem(index);
    45 
    46     return item->data(index.column());
    47 }
    48 
    49 Qt::ItemFlags FindResultModel::flags(const QModelIndex &index) const
    50 {
    51     if (!index.isValid())
    52         return 0;
    53 
    54     return Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable;
    55 }
    56 
    57 FindResultItem *FindResultModel::getItem(const QModelIndex &index) const
    58 {
    59     if (index.isValid()) {
    60         FindResultItem *item = static_cast<FindResultItem*>(index.internalPointer());
    61         if (item) return item;
    62     }
    63     return rootItem;
    64 }
    65 
    66 QVariant FindResultModel::headerData(int section, Qt::Orientation orientation,
    67                                int role) const
    68 {
    69     if (orientation == Qt::Horizontal && role == Qt::DisplayRole)
    70         return rootItem->data(section);
    71 
    72     return QVariant();
    73 }
    74 
    75 QModelIndex FindResultModel::index (FindResultItem *fri)
    76 {
    77 	if (!fri->parent())
    78 		return QModelIndex();
    79 	else	
    80 		return createIndex (fri->row(),0,fri);
    81 }
    82 
    83 
    84 QModelIndex FindResultModel::index(int row, int column, const QModelIndex &parent) const
    85 {
    86     if (parent.isValid() && parent.column() != 0)
    87         return QModelIndex();
    88 
    89     FindResultItem *parentItem = getItem(parent);
    90 
    91     FindResultItem *childItem = parentItem->child(row);
    92     if (childItem)
    93         return createIndex(row, column, childItem);
    94     else
    95         return QModelIndex();
    96 }
    97 
    98 bool FindResultModel::insertColumns(int position, int columns, const QModelIndex &parent)
    99 {
   100     bool success;
   101 
   102     beginInsertColumns(parent, position, position + columns - 1);
   103     success = rootItem->insertColumns(position, columns);
   104     endInsertColumns();
   105 
   106     return success;
   107 }
   108 
   109 bool FindResultModel::insertRows(int position, int rows, const QModelIndex &parent)
   110 {
   111     FindResultItem *parentItem = getItem(parent);
   112     bool success;
   113 
   114     beginInsertRows(parent, position, position + rows - 1);
   115     success = parentItem->insertChildren(position, rows, rootItem->columnCount());
   116     endInsertRows();
   117 
   118     return success;
   119 }
   120 
   121 QModelIndex FindResultModel::parent(const QModelIndex &index) const
   122 {
   123     if (!index.isValid())
   124         return QModelIndex();
   125 
   126     FindResultItem *childItem = getItem(index);
   127     FindResultItem *parentItem = childItem->parent();
   128 
   129     if (parentItem == rootItem)
   130         return QModelIndex();
   131 
   132     return createIndex(parentItem->childNumber(), 0, parentItem);
   133 }
   134 
   135 bool FindResultModel::removeColumns(int position, int columns, const QModelIndex &parent)
   136 {
   137     bool success;
   138 
   139     beginRemoveColumns(parent, position, position + columns - 1);
   140     success = rootItem->removeColumns(position, columns);
   141     endRemoveColumns();
   142 
   143     if (rootItem->columnCount() == 0)
   144         removeRows(0, rowCount());
   145 
   146     return success;
   147 }
   148 
   149 bool FindResultModel::removeRows(int position, int rows, const QModelIndex &parent)
   150 {
   151     FindResultItem *parentItem = getItem(parent);
   152     bool success = true;
   153 
   154     beginRemoveRows(parent, position, position + rows - 1);
   155     success = parentItem->removeChildren(position, rows);
   156     endRemoveRows();
   157 
   158     return success;
   159 }
   160 
   161 int FindResultModel::rowCount(const QModelIndex &parent) const
   162 {
   163     FindResultItem *parentItem = getItem(parent);
   164 
   165     return parentItem->childCount();
   166 }
   167 
   168 bool FindResultModel::setData(const QModelIndex &index, const QVariant &value,
   169                         int role)
   170 {
   171     if (role != Qt::EditRole)
   172         return false;
   173 
   174     FindResultItem *item = getItem(index);
   175     bool result = item->setData(index.column(), value);
   176 
   177     if (result)
   178         emit dataChanged(index, index);
   179 
   180     return result;
   181 }
   182 
   183 bool FindResultModel::setHeaderData(int section, Qt::Orientation orientation,
   184                               const QVariant &value, int role)
   185 {
   186     if (role != Qt::EditRole || orientation != Qt::Horizontal)
   187         return false;
   188 
   189     bool result = rootItem->setData(section, value);
   190 
   191     if (result)
   192         emit headerDataChanged(orientation, section, section);
   193 
   194     return result;
   195 }
   196 
   197 void FindResultModel::addItem (TreeItem *ti)
   198 {
   199 	if (ti)
   200 	{
   201 		QModelIndex ix (index (rootItem));
   202 		//QAbstractItemModel *resultsModel = view->model();
   203 		
   204 		if (!insertRow(ix.row()+1, ix.parent()))
   205 			return;
   206 
   207 		for (int column = 0; column < columnCount(ix.parent()); ++column) {
   208 			QModelIndex child = index(ix.row()+1, column, ix.parent());
   209 			setData(child, QVariant(ti->getHeading()), Qt::EditRole);
   210 			getItem(child)->setOriginal (ti);
   211 		}
   212 	}
   213 }
   214 
   215 void FindResultModel::addItem (const QString &s)
   216 {
   217 	if (!s.isEmpty())
   218 	{
   219 		QModelIndex ix ( index (rootItem));
   220 		
   221 		if (!insertRow(ix.row()+1, ix.parent()))
   222 			return;
   223 
   224 		for (int column = 0; column < columnCount(ix.parent()); ++column) {
   225 			QModelIndex child = index(ix.row()+1, column, ix.parent());
   226 			setData(child, QVariant(s), Qt::EditRole);
   227 		}
   228 	}
   229 }
   230 
   231