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Moved map layer's custom properties to a separate class
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| /*************************************************************************** | ||
| qgsobjectcustomproperties.cpp | ||
| ------------------- | ||
| begin : April 2014 | ||
| copyright : (C) 2014 by Martin Dobias | ||
| email : wonder.sk at gmail dot com | ||
| ***************************************************************************/ | ||
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| /*************************************************************************** | ||
| * * | ||
| * 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. * | ||
| * * | ||
| ***************************************************************************/ | ||
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| #include "qgsobjectcustomproperties.h" | ||
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| #include <QDomNode> | ||
| #include <QStringList> | ||
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| QgsObjectCustomProperties::QgsObjectCustomProperties() | ||
| { | ||
| } | ||
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| QStringList QgsObjectCustomProperties::keys() const | ||
| { | ||
| return mMap.keys(); | ||
| } | ||
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| void QgsObjectCustomProperties::setValue( const QString& key, const QVariant& value ) | ||
| { | ||
| mMap[key] = value; | ||
| } | ||
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| QVariant QgsObjectCustomProperties::value( const QString& key, const QVariant& defaultValue ) const | ||
| { | ||
| return mMap.value( key, defaultValue ); | ||
| } | ||
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| void QgsObjectCustomProperties::remove( const QString& key ) | ||
| { | ||
| mMap.remove( key ); | ||
| } | ||
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| void QgsObjectCustomProperties::readXml( const QDomNode& parentNode, const QString& keyStartsWith ) | ||
| { | ||
| QDomNode propsNode = parentNode.namedItem( "customproperties" ); | ||
| if ( propsNode.isNull() ) // no properties stored... | ||
| return; | ||
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| if ( !keyStartsWith.isEmpty() ) | ||
| { | ||
| //remove old keys | ||
| QStringList keysToRemove; | ||
| QMap<QString, QVariant>::const_iterator pIt = mMap.constBegin(); | ||
| for ( ; pIt != mMap.constEnd(); ++pIt ) | ||
| { | ||
| if ( pIt.key().startsWith( keyStartsWith ) ) | ||
| { | ||
| keysToRemove.push_back( pIt.key() ); | ||
| } | ||
| } | ||
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| QStringList::const_iterator sIt = keysToRemove.constBegin(); | ||
| for ( ; sIt != keysToRemove.constEnd(); ++sIt ) | ||
| { | ||
| mMap.remove( *sIt ); | ||
| } | ||
| } | ||
| else | ||
| { | ||
| mMap.clear(); | ||
| } | ||
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| QDomNodeList nodes = propsNode.childNodes(); | ||
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| for ( int i = 0; i < nodes.size(); i++ ) | ||
| { | ||
| QDomNode propNode = nodes.at( i ); | ||
| if ( propNode.isNull() || propNode.nodeName() != "property" ) | ||
| continue; | ||
| QDomElement propElement = propNode.toElement(); | ||
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| QString key = propElement.attribute( "key" ); | ||
| if ( key.isEmpty() || key.startsWith( keyStartsWith ) ) | ||
| { | ||
| QString value = propElement.attribute( "value" ); | ||
| mMap[key] = QVariant( value ); | ||
| } | ||
| } | ||
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| } | ||
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| void QgsObjectCustomProperties::writeXml( QDomNode& parentNode, QDomDocument& doc ) const | ||
| { | ||
| //remove already existing <customproperties> tags | ||
| QDomNodeList propertyList = parentNode.toElement().elementsByTagName( "customproperties" ); | ||
| for ( int i = 0; i < propertyList.size(); ++i ) | ||
| { | ||
| parentNode.removeChild( propertyList.at( i ) ); | ||
| } | ||
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| QDomElement propsElement = doc.createElement( "customproperties" ); | ||
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| for ( QMap<QString, QVariant>::const_iterator it = mMap.constBegin(); it != mMap.constEnd(); ++it ) | ||
| { | ||
| QDomElement propElement = doc.createElement( "property" ); | ||
| propElement.setAttribute( "key", it.key() ); | ||
| propElement.setAttribute( "value", it.value().toString() ); | ||
| propsElement.appendChild( propElement ); | ||
| } | ||
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| parentNode.appendChild( propsElement ); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /*************************************************************************** | ||
| qgsobjectcustomproperties.h | ||
| ------------------- | ||
| begin : April 2014 | ||
| copyright : (C) 2014 by Martin Dobias | ||
| email : wonder.sk at gmail dot com | ||
| ***************************************************************************/ | ||
|
|
||
| /*************************************************************************** | ||
| * * | ||
| * 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. * | ||
| * * | ||
| ***************************************************************************/ | ||
|
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| #ifndef QGSOBJECTCUSTOMPROPERTIES_H | ||
| #define QGSOBJECTCUSTOMPROPERTIES_H | ||
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| #include <QMap> | ||
| #include <QVariant> | ||
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| class QDomDocument; | ||
| class QDomNode; | ||
|
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| /** | ||
| * Simple key-value store (keys = strings, values = variants) that supports loading/saving to/from XML | ||
| * in <customproperties> element. | ||
| * | ||
| * \note added in 2.4 | ||
| */ | ||
| class CORE_EXPORT QgsObjectCustomProperties | ||
| { | ||
| public: | ||
| QgsObjectCustomProperties(); | ||
|
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| //! Return list of stored keys | ||
| QStringList keys() const; | ||
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| //! Add an entry to the store. If the entry with the keys exists already, it will be overwritten | ||
| void setValue( const QString& key, const QVariant& value ); | ||
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| //! Return value for the given key. If the key is not stored, default value will be used | ||
| QVariant value( const QString& key, const QVariant& defaultValue = QVariant() ) const; | ||
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| //! Remove a key (entry) from the store | ||
| void remove( const QString& key ); | ||
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| /** Read store contents from XML | ||
| @param layerNode note to read from | ||
| @param keyStartsWith reads only properties starting with the specified string (or all if the string is empty)*/ | ||
| void readXml( const QDomNode& parentNode, const QString& keyStartsWith = QString() ); | ||
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| /** Write store contents to XML */ | ||
| void writeXml( QDomNode& parentNode, QDomDocument& doc ) const; | ||
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| protected: | ||
| QMap<QString, QVariant> mMap; | ||
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| }; | ||
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| #endif // QGSOBJECTCUSTOMPROPERTIES_H |