+/*
+ * Copyright (c) 2015 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// CLASS HEADER
+#include "item-factory-wrapper.h"
+
+// EXTERNAL INCLUDES
+#include <dali/public-api/common/vector-wrapper.h>
+#include <dali/devel-api/object/weak-handle.h>
+#include <dali-toolkit/devel-api/builder/builder.h>
+#include <dali-toolkit/public-api/controls/scrollable/item-view/item-view.h>
+#include <dali-toolkit/public-api/controls/scrollable/item-view/item-layout.h>
+
+// INTERNAL INCLUDES
+#include <v8-utils.h>
+#include <dali-wrapper.h>
+#include <shared/api-function.h>
+#include <shared/object-template-helper.h>
+
+namespace Dali
+{
+
+namespace V8Plugin
+{
+
+v8::Persistent<v8::ObjectTemplate> ItemFactoryWrapper::mItemFactoryTemplate;
+
+namespace
+{
+
+typedef std::vector< Property::Map > ItemDataContainer;
+
+// Implementation of ItemFactory for providing actors to ItemView
+class ItemFactory : public Toolkit::ItemFactory
+{
+public:
+
+ /**
+ * Constructor
+ * @param application class, stored as reference
+ */
+ ItemFactory()
+ : mJsonFileLoaded(false),
+ mNumberOfItems(0)
+ {
+ mBuilder = Toolkit::Builder::New();
+ }
+
+ /**
+ * Set the name of the JSON file which defines the templates of items.
+ * @param jsonFile The JSON file
+ */
+ void SetJsonTemplateFile(std::string jsonFile)
+ {
+ if(mJsonFile != jsonFile)
+ {
+ mJsonFile = jsonFile;
+ LoadJsonFile(mJsonFile);
+
+ // Check whether any layout activated in ItemView
+ Toolkit::ItemView itemView = mItemView.GetHandle();
+ if(itemView && itemView.GetActiveLayout() != NULL)
+ {
+ // Refresh ItemView if item templates are changed
+ itemView.Refresh();
+ }
+ }
+ }
+
+ /**
+ * Returns the name of the JSON file.
+ * @return The JSON file name
+ */
+ std::string GetJsonTemplate()
+ {
+ return mJsonFile;
+ }
+
+ /**
+ * Set the data to be used to create new items.
+ *
+ * If ItemView is already created, this will immediately update ItemView with the
+ * new data.
+ *
+ * The data is an array of property maps in which each map contains the data for
+ * each item, including the template to be used to build the actor and the pairs
+ * of key/value to be used to replace the constants defined in the template.
+ * The order of property maps in the array represents the actual order of items
+ * in ItemView.
+ *
+ * @param data The array of property maps
+ */
+ void SetData(ItemDataContainer data)
+ {
+ ItemDataContainer currentData = mData;
+ mData = data;
+ mNumberOfItems = mData.size();
+
+ // Check whether any layout activated in ItemView
+ Toolkit::ItemView itemView = mItemView.GetHandle();
+ if(itemView && itemView.GetActiveLayout() != NULL)
+ {
+ unsigned int currentNumberOfItems = currentData.size();
+ unsigned int newNumberOfItems = data.size();
+
+ // Check whether any items added or deleted from the data
+ // which requires ItemView to be refreshed with the new data
+ if(currentNumberOfItems != newNumberOfItems)
+ {
+ itemView.Refresh();
+ }
+ else
+ {
+ for( unsigned int itemId = 0; itemId < newNumberOfItems; itemId++)
+ {
+ // Check whether the item is already built in ItemView
+ Actor itemActor = itemView.GetItem(itemId);
+ if(itemActor)
+ {
+ // Check if the item needs to be rebuilt
+ if( !V8Utils::IsPropertyMapIdentical(currentData[itemId], data[itemId]) )
+ {
+ // Rebuild the item with the new data
+ Actor newItemActor = NewItem(itemId);
+
+ // Replace the old item with the new one
+ itemView.ReplaceItem( Toolkit::Item( itemId, newItemActor ), 0.0f );
+ }
+ }
+ }
+ }
+ }
+ }
+
+ /**
+ * Retrieve the data.
+ * @return the data.
+ */
+ ItemDataContainer GetData()
+ {
+ return mData;
+ }
+
+ /**
+ * Store a weak handle of ItemView in order to access ItemView APIs
+ * from this ItemFactory implementation
+ * @return the data.
+ */
+ void SetItemView(Toolkit::ItemView itemView)
+ {
+ mItemView = itemView;
+ }
+
+public: // From Toolkit::ItemFactory
+
+ /**
+ * Query the number of items available from the factory.
+ * The maximum available item has an ID of GetNumberOfItems() - 1.
+ */
+ virtual unsigned int GetNumberOfItems()
+ {
+ return mJsonFileLoaded ? mNumberOfItems : 0;
+ }
+
+ /**
+ * Create an Actor to represent a visible item.
+ * @param itemId
+ * @return the created actor.
+ */
+ virtual Actor NewItem(unsigned int itemId)
+ {
+ std::string itemTemplate;
+
+ Property::Map constantsMap = mData[itemId];
+ for ( unsigned int i = 0, count = constantsMap.Count(); i < count; ++i )
+ {
+ Property::Value& constantValue = constantsMap.GetValue(i);
+ if(constantsMap.GetKey(i) == "template")
+ {
+ constantValue.Get(itemTemplate);
+ }
+ else
+ {
+ mBuilder.AddConstant( constantsMap.GetKey(i), constantValue );
+ }
+ }
+
+ Actor item = Actor::DownCast( mBuilder.Create(itemTemplate) );
+ return item;
+ }
+
+private:
+
+ /**
+ * Load the JSON file.
+ * @param The JSON file name
+ */
+ void LoadJsonFile(std::string jsonFile)
+ {
+ try
+ {
+ std::string data;
+ V8Utils::GetFileContents(jsonFile, data);
+
+ mBuilder.LoadFromString(data);
+
+ mJsonFileLoaded = true;
+ }
+ catch(...)
+ {
+// printf("invalid JSON data\n");
+ mJsonFileLoaded = false;
+ }
+ }
+
+private:
+
+ std::string mJsonFile;
+ bool mJsonFileLoaded;
+ Toolkit::Builder mBuilder;
+ unsigned int mNumberOfItems;
+ ItemDataContainer mData;
+ WeakHandle< Toolkit::ItemView > mItemView;
+};
+
+} //un-named space
+
+ItemFactoryWrapper::ItemFactoryWrapper( Toolkit::ItemFactory& factory, GarbageCollectorInterface& gc )
+: BaseWrappedObject( BaseWrappedObject::ITEMFACTORY , gc ),
+ mItemFactory( factory )
+{
+}
+
+ItemFactoryWrapper::~ItemFactoryWrapper()
+{
+}
+
+v8::Handle<v8::Object> ItemFactoryWrapper::WrapItemFactory(v8::Isolate* isolate, Toolkit::ItemFactory& factory )
+{
+ v8::EscapableHandleScope handleScope( isolate );
+ v8::Local<v8::ObjectTemplate> objectTemplate;
+
+ objectTemplate = GetItemFactoryTemplate( isolate );
+
+ // create an instance of the template
+ v8::Local<v8::Object> localObject = objectTemplate->NewInstance();
+
+ // create the ItemFactory wrapper
+ ItemFactoryWrapper* pointer = new ItemFactoryWrapper( factory, Dali::V8Plugin::DaliWrapper::Get().GetDaliGarbageCollector() );
+
+ // assign the JavaScript object to the wrapper.
+ pointer->SetJavascriptObject( isolate, localObject );
+
+ return handleScope.Escape( localObject );
+}
+
+v8::Local<v8::ObjectTemplate> ItemFactoryWrapper::GetItemFactoryTemplate( v8::Isolate* isolate)
+{
+ v8::EscapableHandleScope handleScope( isolate );
+ v8::Local<v8::ObjectTemplate> objectTemplate;
+
+ if( mItemFactoryTemplate.IsEmpty() )
+ {
+ objectTemplate = MakeItemFactoryTemplate( isolate );
+ mItemFactoryTemplate.Reset( isolate, objectTemplate );
+ }
+ else
+ {
+ // get the object template
+ objectTemplate = v8::Local<v8::ObjectTemplate>::New( isolate, mItemFactoryTemplate );
+ }
+ return handleScope.Escape( objectTemplate );
+}
+
+v8::Handle<v8::ObjectTemplate> ItemFactoryWrapper::MakeItemFactoryTemplate( v8::Isolate* isolate )
+{
+ v8::EscapableHandleScope handleScope( isolate );
+
+ v8::Local<v8::ObjectTemplate> objTemplate = v8::ObjectTemplate::New();
+
+ objTemplate->SetInternalFieldCount( BaseWrappedObject::FIELD_COUNT );
+
+ // set property setter and getter
+ objTemplate->SetNamedPropertyHandler( ItemFactoryWrapper::PropertyGet, ItemFactoryWrapper::PropertySet);
+
+ return handleScope.Escape( objTemplate );
+}
+
+void ItemFactoryWrapper::NewItemFactory( const v8::FunctionCallbackInfo< v8::Value >& args)
+{
+ v8::Isolate* isolate = args.GetIsolate();
+ v8::HandleScope handleScope( isolate);
+
+ if( !args.IsConstructCall() )
+ {
+ DALI_SCRIPT_EXCEPTION( isolate, "ItemFactory constructor called without 'new'" );
+ return;
+ }
+
+ Toolkit::ItemFactory* factory = new ItemFactory();
+
+ v8::Local<v8::Object> localObject = WrapItemFactory( isolate, *factory );
+ args.GetReturnValue().Set( localObject );
+}
+
+Toolkit::ItemFactory& ItemFactoryWrapper::GetItemFactoryFromParams( int paramIndex,
+ bool& found,
+ v8::Isolate* isolate,
+ const v8::FunctionCallbackInfo< v8::Value >& args )
+{
+ found = false;
+
+ v8::HandleScope handleScope( isolate );
+ BaseWrappedObject* wrappedObject = V8Utils::GetWrappedDaliObjectParameter( paramIndex, BaseWrappedObject::ITEMFACTORY, isolate, args );
+ if( wrappedObject )
+ {
+ found = true;
+ ItemFactoryWrapper* wrapper = static_cast< ItemFactoryWrapper *>(wrappedObject);
+ return wrapper->GetItemFactory();
+ }
+ else
+ {
+ DALI_SCRIPT_EXCEPTION( isolate, "no valid ItemFactory parameter" );
+ Toolkit::ItemFactory* dummyFactory = new ItemFactory();
+ return *dummyFactory; // avoid build error
+ }
+}
+
+ItemFactoryWrapper* ItemFactoryWrapper::Unwrap( v8::Isolate* isolate, v8::Handle< v8::Object> obj)
+{
+ v8::HandleScope handleScope( isolate );
+
+ v8::Local<v8::External> field = v8::Local<v8::External>::Cast( obj->GetInternalField(0) );
+ void* ptr = field->Value();
+ return static_cast< ItemFactoryWrapper *>(ptr);
+}
+
+void ItemFactoryWrapper::PropertyGet( v8::Local<v8::String> propertyName,
+ const v8::PropertyCallbackInfo<v8::Value>& info)
+{
+ v8::Isolate* isolate = info.GetIsolate();
+ v8::HandleScope handleScope( isolate );
+
+ // get the property name
+ std::string name = V8Utils::v8StringToStdString( propertyName );
+
+ if( std::isupper( name[0] ))
+ {
+ return;
+ }
+
+ // unwrap the object
+ ItemFactoryWrapper* itemFactoryWrapper = Unwrap( isolate, info.This() );
+ if( !itemFactoryWrapper )
+ {
+ return;
+ }
+
+ ItemFactory& factory = static_cast<ItemFactory&>( itemFactoryWrapper->GetItemFactory() );
+
+ if( name == "jsonTemplateFile" )
+ {
+ std::string jsonTemplateFile = factory.GetJsonTemplate();
+ info.GetReturnValue().Set(v8::String::NewFromUtf8(isolate, jsonTemplateFile.c_str()));
+ }
+ else if( name == "data" )
+ {
+ ItemDataContainer data = factory.GetData();
+ unsigned int itemCount = data.size();
+
+ v8::Local<v8::Array> array= v8::Array::New( isolate, itemCount );
+ for( unsigned int i = 0; i < itemCount; i++)
+ {
+ v8::Local<v8::Object> mapObject = v8::Object::New( isolate );
+ V8Utils::CreatePropertyMap( isolate, data[i], mapObject );
+
+ array->Set( i, mapObject);
+ }
+
+ info.GetReturnValue().Set(array);
+ }
+ else
+ {
+ std::string error="Invalid property Get for "+name + "\n";
+ DALI_SCRIPT_EXCEPTION( isolate, error );
+ }
+}
+
+void ItemFactoryWrapper::PropertySet( v8::Local<v8::String> propertyName,
+ v8::Local<v8::Value> javaScriptValue,
+ const v8::PropertyCallbackInfo<v8::Value>& info)
+{
+
+ v8::Isolate* isolate = info.GetIsolate();
+ v8::HandleScope handleScope( isolate );
+
+ // get the property name
+ std::string name = V8Utils::v8StringToStdString( propertyName );
+
+ // unwrap the object
+ ItemFactoryWrapper* itemFactoryWrapper = Unwrap( isolate, info.This() );
+ if( !itemFactoryWrapper )
+ {
+ return;
+ }
+
+ ItemFactory& factory = static_cast<ItemFactory&>( itemFactoryWrapper->GetItemFactory() );
+
+ if( name == "jsonTemplateFile" && javaScriptValue->IsString() )
+ {
+ std::string jsonTemplateFile = V8Utils::v8StringToStdString( javaScriptValue );
+ factory.SetJsonTemplateFile(jsonTemplateFile);
+ }
+ else if( name == "data" && javaScriptValue->IsArray() )
+ {
+ v8::Local<v8::Array> array = v8::Local<v8::Array>::Cast(javaScriptValue);
+
+ ItemDataContainer data;
+
+ for( unsigned int i = 0; i < array->Length(); ++i )
+ {
+ v8::Local<v8::Value> itemData = array->Get(i);
+
+ if( itemData->IsObject() )
+ {
+ Dali::Property::Map map = V8Utils::GetPropertyMapFromObject( isolate, itemData->ToObject() );
+ data.push_back(map);
+ }
+ }
+
+ factory.SetData(data);
+ }
+ else
+ {
+ std::string error = "Invalid property Set for " + name + "\n";
+ DALI_SCRIPT_EXCEPTION( isolate, error );
+ }
+}
+
+Toolkit::ItemFactory& ItemFactoryWrapper::GetItemFactory()
+{
+ return mItemFactory;
+}
+
+void ItemFactoryWrapper::SetItemView(Toolkit::ItemFactory& itemFactory, Toolkit::ItemView itemView)
+{
+ ItemFactory& factory = static_cast<ItemFactory&>( itemFactory );
+ factory.SetItemView(itemView);
+}
+
+} // namespace V8Plugin
+
+} // namespace Dali
projects / platform / core / uifw / dali-toolkit.git / commitdiff
