152 lines
2.9 KiB
C++
152 lines
2.9 KiB
C++
#include "dbStructureNode.h"
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#include <QSqlDatabase>
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#include <QSqlQuery>
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DBStructureNode::DBStructureNode(NodeType type, const QString& name, DBStructureNode* parent)
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: m_type(type), m_name(name), m_parent(parent)
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{
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switch (m_type)
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{
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case RootNode:
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{
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m_status = NoStatus;
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m_icon = QIcon(":img/images/icon_postgresql.png");
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break;
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}
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case ConnectionNode:
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{
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m_status = Disconnect; //初始化为未连接，双击进行链接
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m_icon = QIcon(":img/images/icon_db_disconnect.png");
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break;
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}
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case DatabaseNode:
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{
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m_status = NoStatus;
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m_icon = QIcon(":img/images/icon_database.png");
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break;
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}
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case TableNode:
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{
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m_status = NoStatus;
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m_icon = QIcon(":img/images/icon_table.png");
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break;
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}
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case GroupNode:
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{
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m_status = NoStatus;
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m_icon = QIcon(":img/images/icon_hierarchy.png");
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break;
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}
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default:
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break;
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}
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}
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DBStructureNode::~DBStructureNode()
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{
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qDeleteAll(m_children);
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}
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//节点操作
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void DBStructureNode::appendChild(DBStructureNode* child)
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{
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if(child)
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{
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child->m_parent = this; // 成员函数可以访问同一类的其他对象的私有成员
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m_children.append(child);
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}
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}
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void DBStructureNode::removeChild(DBStructureNode* child)
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{
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if(m_children.removeOne(child))
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{
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delete child;
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child = nullptr;
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}
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}
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DBStructureNode* DBStructureNode::child(int row)
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{
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if(row < 0 || row >= m_children.count())
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return nullptr;
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return m_children.value(row);
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}
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int DBStructureNode::childCount() const
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{
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return m_children.count();
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}
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int DBStructureNode::row() const
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{
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if(m_parent)
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return m_parent->m_children.indexOf(this);
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return 0;
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}
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void DBStructureNode::removeAllChildren()
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{
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qDeleteAll(m_children);
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m_children.clear();
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}
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//数据访问
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NodeType DBStructureNode::type() const
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{
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return m_type;
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}
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QString DBStructureNode::name() const
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{
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return m_name;
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}
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QIcon DBStructureNode::icon() const
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{
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return m_icon;
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}
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void DBStructureNode::setStatus(NodeStatus status)
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{
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m_status = status;
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if(m_type == ConnectionNode && status == Disconnect)
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m_icon = QIcon(":img/images/icon_db_disconnect.png");
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else if(m_type == ConnectionNode && status == Connect)
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m_icon = QIcon(":img/images/icon_db_connect.png");
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}
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NodeStatus DBStructureNode::status() const
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{
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return m_status;
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}
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QVariant DBStructureNode::columnData(int column) const
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{
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switch(column)
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{
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case ColumnName:
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return m_name;
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default:
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return QVariant();
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}
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}
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DBStructureNode* DBStructureNode::parentNode()
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{
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return m_parent;
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}
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void DBStructureNode::setData(int role, const QVariant& value)
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{
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m_roleData[role] = value;
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}
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QVariant DBStructureNode::data(int role) const
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{
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return m_roleData.value(role, QVariant()); //不存在则返回空QVariant
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}
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