tb_editfield.h

// ================================================================================
// ==      This file is a part of Turbo Badger. (C) 2011-2014, Emil Segerås      ==
// ==                     See tb_core.h for more information.                    ==
// ================================================================================

#ifndef TB_EDITFIELD_H
#define TB_EDITFIELD_H

#include "tb_widgets_common.h"
#include "tb_msg.h"
#include "tb_style_edit.h"
#include <stdlib.h>

namespace tb {

enum EDIT_TYPE {
    EDIT_TYPE_TEXT,
    EDIT_TYPE_SEARCH,
    EDIT_TYPE_PASSWORD,
    EDIT_TYPE_EMAIL,
    EDIT_TYPE_PHONE,
    EDIT_TYPE_URL,
    EDIT_TYPE_NUMBER
};

class TBEditFieldContentFactory : public TBTextFragmentContentFactory
{
public:
    class TBEditField *editfield;
    virtual int GetContent(const char *text);
    virtual TBTextFragmentContent *CreateFragmentContent(const char *text, int text_len);
};

class TBEditFieldScrollRoot : public TBWidget
{
private: // May only be used by TBEditField.
    friend class TBEditField;
    TBEditFieldScrollRoot() {}
public:
    virtual void OnPaintChildren(const PaintProps &paint_props);
    virtual void GetChildTranslation(int &x, int &y) const;
    virtual WIDGET_HIT_STATUS GetHitStatus(int x, int y);
};

class TBEditField : public TBWidget, private TBStyleEditListener, public TBMessageHandler
{
public:
    // For safe typecasting
    TBOBJECT_SUBCLASS(TBEditField, TBWidget);

    TBEditField();
    ~TBEditField();

    TBRect GetVisibleRect();

    void SetMultiline(bool multiline);
    bool GetMultiline() const { return m_style_edit.packed.multiline_on; }

    void SetStyling(bool styling);
    bool GetStyling() const { return m_style_edit.packed.styling_on; }

    void SetReadOnly(bool readonly);
    bool GetReadOnly() const { return m_style_edit.packed.read_only; }

    void SetWrapping(bool wrapping);
    bool GetWrapping() const { return m_style_edit.packed.wrapping; }

    void SetAdaptToContentSize(bool adapt);
    bool GetAdaptToContentSize() const { return m_adapt_to_content_size; }

    void SetVirtualWidth(int virtual_width);
    int GetVirtualWidth() const { return m_virtual_width; }

    TBStyleEdit *GetStyleEdit() { return &m_style_edit; }

    void SetEditType(EDIT_TYPE type);
    EDIT_TYPE GetEditType() { return m_edit_type; }

    virtual bool GetCustomSkinCondition(const TBSkinCondition::CONDITION_INFO &info);

    void SetTextAlign(TB_TEXT_ALIGN align) { m_style_edit.SetAlign(align); }
    TB_TEXT_ALIGN GetTextAlign() const { return m_style_edit.align; }

    virtual void SetValueDouble(double value);

    virtual double GetValueDouble() const { return GetText().atof(); }

    virtual bool SetText(const TBStr & text) { return m_style_edit.SetText(text, TB_CARET_POS_BEGINNING); }
    virtual bool GetText(TBStr &text) const { return m_style_edit.GetText(text); }
    using TBWidget::GetText; 

    using TBWidget::Invalidate; 

    bool SetText(const TBStr & text, TB_CARET_POS pos)
                                            { return m_style_edit.SetText(text, pos); }

    virtual bool SetPlaceholderText(const TBStr & text) { return m_placeholder.SetText(text); }
    virtual bool GetPlaceholderText(TBStr &text) const { return m_placeholder.GetText(text); }

    void SetFormat(TBStr format);
    const TBStr & GetFormat() const { return m_format; }

    virtual void ScrollTo(int x, int y);
    virtual TBWidget::ScrollInfo GetScrollInfo();
    virtual TBWidget *GetScrollRoot() { return &m_root; }

    virtual bool OnEvent(const TBWidgetEvent &ev);
    virtual void OnPaint(const PaintProps &paint_props);
    virtual void OnPaintChildren(const PaintProps &paint_props);
    virtual void OnInflate(const INFLATE_INFO &info);
    virtual void OnDeflate(const INFLATE_INFO &info);
    virtual void OnAdded();
    virtual void OnFontChanged();
    virtual void OnFocusChanged(bool focused);
    virtual void OnResized(int old_w, int old_h);
    virtual TBWidget *GetContentRoot() { return &m_root; }

    virtual PreferredSize OnCalculatePreferredContentSize(const SizeConstraints &constraints);

    virtual void OnMessageReceived(TBMessage *msg);
private:
    TBScrollBar m_scrollbar_x;
    TBScrollBar m_scrollbar_y;
    TBWidgetString m_placeholder;
    EDIT_TYPE m_edit_type;
    TBStr m_format;
    TBEditFieldScrollRoot m_root;
    TBEditFieldContentFactory m_content_factory;
    TBStyleEdit m_style_edit;
    bool m_adapt_to_content_size;
    int m_virtual_width;
    void UpdateScrollbarVisibility(bool multiline);

    // == TBStyleEditListener =======================
    virtual void OnChange();
    virtual bool OnEnter();
    virtual void Invalidate(const TBRect &rect);
    virtual void DrawString(int32_t x, int32_t y, TBFontFace *font, const TBColor &color, const char *str, int32_t len);
    virtual void DrawRect(const TBRect &rect, const TBColor &color);
    virtual void DrawRectFill(const TBRect &rect, const TBColor &color);
    virtual void DrawTextSelectionBg(const TBRect &rect);
    virtual void DrawContentSelectionFg(const TBRect &rect);
    virtual void DrawCaret(const TBRect &rect);
    virtual void Scroll(int32_t dx, int32_t dy);
    virtual void UpdateScrollbars();
    virtual void CaretBlinkStart();
    virtual void CaretBlinkStop();
};

} // namespace tb

#endif // TB_EDITFIELD_H