kicad/common/lib_tree_model_adapter.h

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2017 Chris Pavlina <pavlina.chris@gmail.com>
* Copyright (C) 2014 Henner Zeller <h.zeller@acm.org>
* Copyright (C) 2014-2017 KiCad Developers, see AUTHORS.txt for contributors.
*
* 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 3 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LIB_TREE_MODEL_ADAPTER_H
#define LIB_TREE_MODEL_ADAPTER_H
#include <lib_id.h>
#include <lib_tree_model.h>
#include <wx/hashmap.h>
#include <wx/dataview.h>
#include <wx/headerctrl.h>
#include <vector>
#include <functional>
/**
* Adapter class in the component selector Model-View-Adapter (mediated MVC)
* architecture. The other pieces are in:
*
* - Model: CMP_TREE_NODE and descendants in eeschema/cmp_tree_model.h
* - View:
* - DIALOG_CHOOSE_COMPONENT in eeschema/dialogs/dialog_choose_component.h
* - wxDataViewCtrl
*
* This adapter presents the interface specified by wxDataViewModel to the
* wxDataViewCtrl:
*
* +---+ +------------------+
* +---+ Generates | A | | VIEW |
* | M | from libs | D | wxDataViewModel |------------------|
* | O | <---------- | A | <------------------> | wxDataViewCtrl |
* | D | | P | |------------------|
* | E | <---------> | T | <------------------- | wxTextCtrl |
* | L | UpdateScore | E | UpdateSearchString() |------------------|
* +---+ | R | | |
* +---+ +------------------+
*
* Because this adapter is a wxDataViewModel, it is reference-counted by
* wxObject. To ensure this interface is used correctly, the constructor
* is private; LIB_TREE_MODEL_ADAPTER should be created by the static
* factory method LIB_TREE_MODEL_ADAPTER::Create().
*
* Quick summary of methods used to drive this class:
*
* - `SetFilter()` - set whether the view is restricted to power parts
* - `ShowUnits()` - set whether units are displayed
* - `SetPreselectNode()` - set a node to highlight when not searching
* - `AddLibrary()` - populate the model with all aliases in a library
* - `AddAliasList()` - populate the model with a specific list of aliases
*
* Quick summary of methods used by the View:
*
* - `UpdateSearchString()` - pass in the user's search text
* - `AttachTo()` - pass in the wxDataViewCtrl
* - `GetAliasFor()` - get the LIB_ALIAS* for a selected item
* - `GetUnitFor()` - get the unit for a selected item
* - `GetComponentsCount()` - count the aliases loaded
*
* Methods implemented as part of wxDataViewModel:
*
* - `HasContainerColumns()` - whether a parent item has more than one column
* - `IsContainer()` - whether an item is a parent
* - `GetParent()` - return the parent of an item, or invalid if root
* - `GetChildren()` - get the children of an item
* - `GetColumnCount()` - get the number of columns in the view
* - `GetColumnType()` - get the data type shown in each column
* - `GetValue()` - get the data shown in a cell
* - `SetValue()` - edit the data in a cell (does nothing)
* - `GetAttr()` - get any per-item formatting
* - `Compare()` - compare two rows, for sorting
* - `HasDefaultCompare()` - whether sorted by default
*/
class LIB_TREE_MODEL_ADAPTER: public wxDataViewModel
{
public:
/**
* Reference-counting container for a pointer to CMP_TREE_MODEL_ADAPTER_BASE.
*/
typedef wxObjectDataPtr<LIB_TREE_MODEL_ADAPTER> PTR;
/**
* Destructor. Do NOT delete this class manually; it is reference-counted
* by wxObject.
*/
~LIB_TREE_MODEL_ADAPTER();
/**
* This enum allows a selective filtering of components to list
*/
enum CMP_FILTER_TYPE
{
CMP_FILTER_NONE, ///< no filtering
CMP_FILTER_POWER, ///< list components flagged PWR
};
/**
* Set the component filter type. Must be set before adding libraries
*
* @param aFilter if CMP_FILTER_POWER, only power parts are loaded
*/
void SetFilter( CMP_FILTER_TYPE aFilter );
/**
* Return the active filter.
*/
CMP_FILTER_TYPE GetFilter() const { return m_filter; }
/**
* Whether or not to show units. May be set at any time; updates at the next
* UpdateSearchString()
*
* @param aShow if true, units are displayed
*/
void ShowUnits( bool aShow );
/**
* Update the column size based on the displayed contents
*
* @param aCol Which column to resize
*/
void UpdateWidth( int aCol );
/**
* Set the component name to be selected if there are no search results.
* May be set at any time; updates at the next UpdateSearchString().
*
* @param aLibId symbol #LIB_ID to be selected
* @param aUnit unit to be selected, if > 0 (0 selects the alias itself)
*/
void SetPreselectNode( LIB_ID const& aLibId, int aUnit );
/**
* Add the given list of components by alias. To be called in the setup
* phase.
*
* @param aNodeName the parent node the components will appear under
* @param aDesc the description field of the parent node
* @param aItemList list of components
*/
void DoAddLibrary( wxString const& aNodeName, wxString const& aDesc,
std::vector<LIB_TREE_ITEM*> const& aItemList, bool presorted );
/**
* Sort the tree and assign ranks after adding libraries.
*/
void AssignIntrinsicRanks() { m_tree.AssignIntrinsicRanks(); }
/**
* Set the search string provided by the user.
*
* @param aSearch full, unprocessed search text
*/
void UpdateSearchString( wxString const& aSearch );
/**
* Attach to a wxDataViewCtrl and initialize it. This will set up columns
* and associate the model via the adapter.
*
* @param aDataViewCtrl the view component in the dialog
*/
void AttachTo( wxDataViewCtrl* aDataViewCtrl );
/**
* Return the alias for the given item.
*
* @param aSelection item from the wxDataViewCtrl
* (see wxDataViewCtrl::GetSelection())
*
* @return alias, or nullptr if none is selected
*/
LIB_ID GetAliasFor( const wxDataViewItem& aSelection ) const;
/**
* Return the unit for the given item.
*
* @param aSelection item from the wxDataViewCtrl
* (see wxDataViewCtrl::GetSelection())
*
* @return Unit, or zero if the alias itself is selected. Return valid is
* invalid if GetAliasFor() returns nullptr.
*/
int GetUnitFor( const wxDataViewItem& aSelection ) const;
/**
* Return node type for the given item.
*
* @param aSelection item from the wxDataViewCtrl
* (see wxDataViewCtrl::GetSelection())
*
* @return Type of the selected node, might be INVALID.
*/
LIB_TREE_NODE::TYPE GetTypeFor( const wxDataViewItem& aSelection ) const;
virtual wxString GenerateInfo( LIB_ID const& aLibId, int aUnit ) { return wxEmptyString; };
/**
* Return the number of components loaded in the tree.
*/
int GetItemCount() const;
/**
* Return the number of libraries loaded in the tree.
*/
virtual int GetLibrariesCount() const
{
return m_tree.Children.size();
}
/**
* Returns tree item corresponding to part.
*
* @param aLibId specifies the part and library name to be searched for.
* @return Tree data item representing the part. Might be invalid if nothings was found.
*/
wxDataViewItem FindItem( const LIB_ID& aLibId );
/**
* Populate a list of all the children of an item
*
* @return number of children
*/
unsigned int GetChildren( wxDataViewItem const& aItem,
wxDataViewItemArray& aChildren ) const override;
// Freezing/Thawing. Used when updating the table model so that we don't try and fetch
// values during updating. Primarily a problem on OSX which doesn't pay attention to the
// wxDataViewCtrl's freeze count when updating the keyWindow.
void Freeze() { m_freeze++; }
void Thaw() { m_freeze--; }
bool IsFrozen() const { return m_freeze; }
protected:
static wxDataViewItem ToItem( LIB_TREE_NODE const* aNode );
static LIB_TREE_NODE const* ToNode( wxDataViewItem aItem );
static unsigned int IntoArray( LIB_TREE_NODE const& aNode, wxDataViewItemArray& aChildren );
LIB_TREE_NODE_ROOT m_tree;
/**
* Constructor
*/
LIB_TREE_MODEL_ADAPTER();
/**
* Check whether a container has columns too
*/
virtual bool HasContainerColumns( wxDataViewItem const& aItem ) const override;
/**
* Check whether an item can have children.
*/
virtual bool IsContainer( wxDataViewItem const& aItem ) const override;
/**
* Get the parent of an item.
*
* @param aItem item to get the parent of
* @return parent of aItem, or an invalid wxDataViewItem if parent is root
*/
virtual wxDataViewItem GetParent( wxDataViewItem const& aItem ) const override;
/**
* Return the number of columns in the model
*/
virtual unsigned int GetColumnCount() const override { return 2; }
/**
* Return the type of data stored in the column
*
* @return type of data as indicated by wxVariant::GetType()
*/
virtual wxString GetColumnType( unsigned int aCol ) const override { return "string"; }
/**
* Get the value of an item.
*
* @param aVariant wxVariant to receive the data
* @param aItem item whose data will be placed into aVariant
* @param aCol column number of the data
*/
virtual void GetValue( wxVariant& aVariant,
wxDataViewItem const& aItem,
unsigned int aCol ) const override;
/**
* Set the value of an item. Does nothing - this model doesn't support
* editing.
*/
virtual bool SetValue( wxVariant const& aVariant,
wxDataViewItem const& aItem,
unsigned int aCol ) override { return false; }
/**
* Get any formatting for an item.
*
* @param aItem item to get formatting for
* @param aCol column number of interest
* @param aAttr receiver for attributes
* @return true iff the item has non-default attributes
*/
virtual bool GetAttr( wxDataViewItem const& aItem,
unsigned int aCol,
wxDataViewItemAttr& aAttr ) const override;
private:
CMP_FILTER_TYPE m_filter;
bool m_show_units;
LIB_ID m_preselect_lib_id;
int m_preselect_unit;
int m_freeze;
wxDataViewColumn* m_col_part;
wxDataViewColumn* m_col_desc;
wxDataViewCtrl* m_widget;
/**
* Compute the width required for the given column of a node and its
* children.
*
* @param aTree - root node of the tree
* @param aCol - column number
* @param aHeading - heading text, to set the minimum width
*/
int ColWidth( LIB_TREE_NODE& aTree, int aCol, wxString const& aHeading );
/**
* Find any results worth highlighting and expand them, according to given
* criteria (f(CMP_TREE_NODE const*) -> bool)
* The highest-scoring node is written to aHighScore
*/
void FindAndExpand( LIB_TREE_NODE& aNode,
std::function<bool( LIB_TREE_NODE const* )> aFunc,
LIB_TREE_NODE** aHighScore );
/**
* Find and expand successful search results. Return the best match (if any).
*/
LIB_TREE_NODE* ShowResults();
/**
* Find and expand preselected node. Return the best match (if any).
*/
LIB_TREE_NODE* ShowPreselect();
/**
* Find and expand a library if there is only one. Return the best match (if any).
*/
LIB_TREE_NODE* ShowSingleLibrary();
};
#endif // LIB_TREE_MODEL_ADAPTER_H