gecko-dev/layout/forms/nsIListControlFrame.h

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#ifndef nsIListControlFrame_h___
#define nsIListControlFrame_h___

#include "nsISupports.h"
#include "nsFont.h"
class nsPresContext;
class nsAString;
class nsIContent;

// IID for the nsIListControlFrame class
#define NS_ILISTCONTROLFRAME_IID    \
  { 0xa28ca6f, 0x6850, 0x11da, \
      { 0x95, 0x2c, 0x0, 0xe0, 0x81, 0x61, 0x16, 0x5f } }

/** 
  * nsIListControlFrame is the interface for frame-based listboxes.
  */
class nsIListControlFrame : public nsISupports {

public:
  NS_DECLARE_STATIC_IID_ACCESSOR(NS_ILISTCONTROLFRAME_IID)

  /**
   * Sets the ComboBoxFrame
   *
   */
  NS_IMETHOD SetComboboxFrame(nsIFrame* aComboboxFrame) = 0;

  /**
   * Get the display string for an item
   */
  NS_IMETHOD GetOptionText(PRInt32 aIndex, nsAString & aStr) = 0;

  /**
   * Get the Selected Item's index
   *
   */
  NS_IMETHOD GetSelectedIndex(PRInt32* aIndex) = 0;

  /**
   * Initiates mouse capture for the listbox
   *
   */
  NS_IMETHOD CaptureMouseEvents(nsPresContext* aPresContext, PRBool aGrabMouseEvents) = 0;

  /**
   * Returns the maximum width and height of an item in the listbox
   */

  NS_IMETHOD GetMaximumSize(nsSize &aSize) = 0;

  /**
   * Returns the number of options in the listbox
   */

  NS_IMETHOD GetNumberOfOptions(PRInt32* aNumOptions) = 0; 

  /**
   * 
   */
  NS_IMETHOD SyncViewWithFrame() = 0;

  /**
   * Called by combobox when it's about to drop down
   */
  NS_IMETHOD AboutToDropDown() = 0;

  /**
   * Called by combobox when it's about to roll up
   */
  NS_IMETHOD AboutToRollup() = 0;

  /**
   * Fire on change (used by combobox)
   */
  NS_IMETHOD FireOnChange() = 0;

  /**
   *
   */
  NS_IMETHOD SetOverrideReflowOptimization(PRBool aValue) = 0;

  /**
   * Tell the selected list to roll up and ensure that the proper index is
   * selected, possibly firing onChange if the index has changed
   *
   * @param aIndex the index to actually select
   */
  NS_IMETHOD ComboboxFinish(PRInt32 aIndex) = 0;

  /**
   * Notification that the content has been reset
   */
  virtual void OnContentReset() = 0;
};

NS_DEFINE_STATIC_IID_ACCESSOR(nsIListControlFrame, NS_ILISTCONTROLFRAME_IID)

#endif