Initial release
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// This file is part of VSTGUI. It is subject to the license terms
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// in the LICENSE file found in the top-level directory of this
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// distribution and at http://github.com/steinbergmedia/vstgui/LICENSE
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#include "uiviewcreatecontroller.h"
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#if VSTGUI_LIVE_EDITING
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#include "uieditcontroller.h"
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#include "uibasedatasource.h"
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#include "../cstream.h"
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#include "../../lib/cdropsource.h"
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#include "../../lib/dragging.h"
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#include "../../lib/controls/coptionmenu.h"
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#include "../../lib/controls/csearchtextedit.h"
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#include "../detail/uiviewcreatorattributes.h"
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namespace VSTGUI {
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//----------------------------------------------------------------------------------------------------
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class UIViewCreatorDataSource : public UIBaseDataSource
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{
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public:
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UIViewCreatorDataSource (const IViewFactory* factory, UIDescription* description);
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CMouseEventResult dbOnMouseDown (const CPoint& where, const CButtonState& buttons, int32_t row, int32_t column, CDataBrowser* browser) override;
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CMouseEventResult dbOnMouseMoved (const CPoint& where, const CButtonState& buttons, int32_t row, int32_t column, CDataBrowser* browser) override;
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void getNames (std::list<const std::string*>& names) override;
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bool addItem (UTF8StringPtr name) override { return false; }
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bool removeItem (UTF8StringPtr name) override { return false; }
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bool performNameChange (UTF8StringPtr oldName, UTF8StringPtr newName) override { return false; }
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UTF8StringPtr getDefaultsName () override { return "UIViewCreatorDataSource"; }
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void addViewToCurrentEditView (int32_t row);
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protected:
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SharedPointer<UISelection> createSelection (int32_t row);
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IViewFactoryEditingSupport::ViewAndDisplayNameList viewAndDisplayNameList;
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const IViewFactory* factory;
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DragStartMouseObserver dragStartMouseObserver;
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};
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//----------------------------------------------------------------------------------------------------
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UIViewCreatorController::UIViewCreatorController (IController* baseController, UIDescription* description)
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: DelegationController (baseController)
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, description (description)
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{
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}
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//----------------------------------------------------------------------------------------------------
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UIViewCreatorController::~UIViewCreatorController ()
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{
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if (dataSource)
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dataSource->forget ();
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}
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//----------------------------------------------------------------------------------------------------
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CView* UIViewCreatorController::createView (const UIAttributes& attributes, const IUIDescription* _description)
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{
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const std::string* name = attributes.getAttributeValue (IUIDescription::kCustomViewName);
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if (name)
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{
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if (*name == "ViewDataBrowser")
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{
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vstgui_assert (dataBrowser == nullptr);
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dataSource = new UIViewCreatorDataSource (description->getViewFactory (), description);
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UIEditController::setupDataSource (dataSource);
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dataBrowser = new CDataBrowser (CRect (0, 0, 0, 0), dataSource, CDataBrowser::kDrawRowLines|CScrollView::kHorizontalScrollbar | CScrollView::kVerticalScrollbar);
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return dataBrowser;
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}
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}
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return DelegationController::createView (attributes, _description);
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}
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//----------------------------------------------------------------------------------------------------
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CView* UIViewCreatorController::verifyView (CView* view, const UIAttributes& attributes, const IUIDescription* desc)
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{
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auto searchField = dynamic_cast<CSearchTextEdit*>(view);
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if (searchField && searchField->getTag () == kSearchFieldTag)
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{
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dataSource->setSearchFieldControl (searchField);
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}
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return DelegationController::verifyView (view, attributes, desc);
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}
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//----------------------------------------------------------------------------------------------------
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IControlListener* UIViewCreatorController::getControlListener (UTF8StringPtr name)
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{
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if (std::strcmp (name, "viewcreator.search") == 0)
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return dataSource;
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return this;
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}
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//----------------------------------------------------------------------------------------------------
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void UIViewCreatorController::valueChanged (CControl* control)
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{
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}
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//----------------------------------------------------------------------------------------------------
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void UIViewCreatorController::appendContextMenuItems (COptionMenu& contextMenu, const CPoint& where)
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{
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auto cell = dataBrowser->getCellAt (where);
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if (!cell.isValid ())
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return;
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const auto& viewName = dataSource->getStringList ()->at (static_cast<uint32_t> (cell.row));
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UTF8String menuEntryName = "Insert '" + viewName + "'";
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auto item = new CCommandMenuItem (menuEntryName);
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item->setActions ([&, cell] (CCommandMenuItem* item) {
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dataSource->addViewToCurrentEditView (cell.row);
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});
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contextMenu.addEntry (item);
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}
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//----------------------------------------------------------------------------------------------------
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//----------------------------------------------------------------------------------------------------
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//----------------------------------------------------------------------------------------------------
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UIViewCreatorDataSource::UIViewCreatorDataSource (const IViewFactory* factory,
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UIDescription* description)
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: UIBaseDataSource (description, nullptr, nullptr), factory (factory)
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{
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}
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//----------------------------------------------------------------------------------------------------
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void UIViewCreatorDataSource::getNames (std::list<const std::string*>& names)
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{
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if (const auto* vfEditingSupport = dynamic_cast<const IViewFactoryEditingSupport*> (factory))
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{
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viewAndDisplayNameList = vfEditingSupport->collectRegisteredViewAndDisplayNames ();
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for (const auto& e : viewAndDisplayNameList)
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{
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names.emplace_back (&e.second);
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}
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names.sort ([] (const auto& lhs, const auto& rhs) { return *lhs < *rhs; });
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}
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}
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//----------------------------------------------------------------------------------------------------
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void UIViewCreatorDataSource::addViewToCurrentEditView (int32_t row)
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{
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UIViewCreatorController* controller = dynamic_cast<UIViewCreatorController*> (getViewController (dataBrowser, true));
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if (controller)
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{
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if (UIEditController* editController = dynamic_cast<UIEditController*> (controller->getBaseController ()))
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{
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SharedPointer<UISelection> selection = createSelection (row);
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editController->addSelectionToCurrentView (selection);
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}
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}
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}
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//----------------------------------------------------------------------------------------------------
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SharedPointer<UISelection> createSelectionFromViewName (const std::string& viewName,
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const IViewFactory* factory,
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const UIDescription* description,
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const UIAttributes* optionalAttributes)
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{
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SharedPointer<UISelection> selection;
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UIAttributes viewAttr;
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viewAttr.setAttribute (UIViewCreator::kAttrClass, viewName);
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if (optionalAttributes)
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{
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for (auto& a : *optionalAttributes)
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viewAttr.setAttribute (a.first, a.second);
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}
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CView* view = factory->createView (viewAttr, description);
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if (view)
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{
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if (view->getViewSize ().isEmpty ())
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{
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CRect size (CPoint (0, 0), CPoint (20, 20));
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view->setViewSize (size);
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view->setMouseableArea (size);
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}
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selection = makeOwned<UISelection> ();
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selection->add (view);
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view->forget ();
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}
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return selection;
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}
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//----------------------------------------------------------------------------------------------------
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SharedPointer<UISelection> UIViewCreatorDataSource::createSelection (int32_t row)
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{
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SharedPointer<UISelection> selection;
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auto viewDisplayName = getStringList ()->at (static_cast<uint32_t> (row)).getString ();
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auto it = std::find_if (viewAndDisplayNameList.begin (), viewAndDisplayNameList.end (),
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[&] (const auto& entry) { return entry.second == viewDisplayName; });
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if (it == viewAndDisplayNameList.end ())
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return nullptr;
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return createSelectionFromViewName (*it->first, factory, description, nullptr);
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}
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//----------------------------------------------------------------------------------------------------
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CMouseEventResult UIViewCreatorDataSource::dbOnMouseDown (const CPoint& where, const CButtonState& buttons, int32_t row, int32_t column, CDataBrowser* browser)
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{
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if (buttons.isLeftButton ())
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{
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dragStartMouseObserver.init (where);
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if (!buttons.isDoubleClick ())
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return kMouseEventHandled;
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addViewToCurrentEditView (row);
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}
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return kMouseDownEventHandledButDontNeedMovedOrUpEvents;
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}
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//----------------------------------------------------------------------------------------------------
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CMouseEventResult UIViewCreatorDataSource::dbOnMouseMoved (const CPoint& where, const CButtonState& buttons, int32_t row, int32_t column, CDataBrowser* browser)
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{
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if (buttons.isLeftButton () && row != -1 && column != -1)
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{
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if (dragStartMouseObserver.shouldStartDrag (where))
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{
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auto selRow = dataBrowser->getSelection ().front ();
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SharedPointer<UISelection> selection = createSelection (selRow);
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CMemoryStream stream (1024, 1024, false);
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if (selection->store (stream, description))
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{
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stream.end ();
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auto dropSource = CDropSource::create (stream.getBuffer (),
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static_cast<uint32_t> (stream.tell ()),
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CDropSource::kText);
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auto bitmap = createBitmapFromSelection (selection, dataBrowser->getFrame ());
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browser->doDrag (DragDescription (dropSource, CPoint (), bitmap));
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}
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}
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return kMouseEventHandled;
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}
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return kMouseEventNotHandled;
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}
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} // VSTGUI
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#endif // VSTGUI_LIVE_EDITING
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