2007-03-22 10:30:00 -07:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2012-05-21 04:12:37 -07:00
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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2007-03-22 10:30:00 -07:00
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#include "nsISupports.idl"
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interface nsIDOMElement;
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interface nsITreeView;
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interface nsITreeSelection;
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interface nsITreeColumn;
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interface nsITreeColumns;
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interface nsIScriptableRegion;
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2008-08-27 05:07:27 -07:00
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[scriptable, uuid(64BA5199-C4F4-4498-BBDC-F8E4C369086C)]
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interface nsITreeBoxObject : nsISupports
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{
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/**
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* Obtain the columns.
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*/
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readonly attribute nsITreeColumns columns;
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/**
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* The view that backs the tree and that supplies it with its data.
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* It is dynamically settable, either using a view attribute on the
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* tree tag or by setting this attribute to a new value.
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*/
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attribute nsITreeView view;
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/**
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* Whether or not we are currently focused.
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*/
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attribute boolean focused;
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/**
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* Obtain the treebody content node
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*/
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readonly attribute nsIDOMElement treeBody;
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/**
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* Obtain the height of a row.
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*/
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readonly attribute long rowHeight;
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/**
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* Obtain the width of a row.
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*/
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readonly attribute long rowWidth;
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/**
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* Get the pixel position of the horizontal scrollbar.
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*/
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readonly attribute long horizontalPosition;
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/**
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* Return the region for the visible parts of the selection, in device pixels.
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*/
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readonly attribute nsIScriptableRegion selectionRegion;
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/**
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* Get the index of the first visible row.
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*/
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long getFirstVisibleRow();
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/**
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* Get the index of the last visible row.
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*/
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long getLastVisibleRow();
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/**
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* Gets the number of possible visible rows.
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*/
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long getPageLength();
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/**
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* Ensures that a row at a given index is visible.
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*/
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void ensureRowIsVisible(in long index);
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/**
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* Ensures that a given cell in the tree is visible.
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*/
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void ensureCellIsVisible(in long row, in nsITreeColumn col);
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/**
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* Scrolls such that the row at index is at the top of the visible view.
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*/
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void scrollToRow(in long index);
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/**
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* Scroll the tree up or down by numLines lines. Positive
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* values move down in the tree. Prevents scrolling off the
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* end of the tree.
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*/
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void scrollByLines(in long numLines);
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/**
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* Scroll the tree up or down by numPages pages. A page
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* is considered to be the amount displayed by the tree.
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* Positive values move down in the tree. Prevents scrolling
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* off the end of the tree.
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*/
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void scrollByPages(in long numPages);
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/**
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* Scrolls such that a given cell is visible (if possible)
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* at the top left corner of the visible view.
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*/
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void scrollToCell(in long row, in nsITreeColumn col);
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/**
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* Scrolls horizontally so that the specified column is
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* at the left of the view (if possible).
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*/
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void scrollToColumn(in nsITreeColumn col);
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/**
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* Scroll to a specific horizontal pixel position.
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*/
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void scrollToHorizontalPosition(in long horizontalPosition);
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/**
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* Invalidation methods for fine-grained painting control.
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*/
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void invalidate();
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void invalidateColumn(in nsITreeColumn col);
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void invalidateRow(in long index);
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void invalidateCell(in long row, in nsITreeColumn col);
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void invalidateRange(in long startIndex, in long endIndex);
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void invalidateColumnRange(in long startIndex, in long endIndex,
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in nsITreeColumn col);
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/**
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* A hit test that can tell you what row the mouse is over.
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* returns -1 for invalid mouse coordinates.
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*
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* The coordinate system is the client coordinate system for the
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* document this boxObject lives in, and the units are CSS pixels.
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*/
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long getRowAt(in long x, in long y);
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/**
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* A hit test that can tell you what cell the mouse is over. Row is the row index
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* hit, returns -1 for invalid mouse coordinates. ColID is the column hit.
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* ChildElt is the pseudoelement hit: this can have values of
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* "cell", "twisty", "image", and "text".
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*
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* The coordinate system is the client coordinate system for the
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* document this boxObject lives in, and the units are CSS pixels.
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*/
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void getCellAt(in long x, in long y, out long row, out nsITreeColumn col, out ACString childElt);
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/**
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* Find the coordinates of an element within a specific cell.
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*/
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void getCoordsForCellItem(in long row, in nsITreeColumn col, in ACString element,
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out long x, out long y, out long width, out long height);
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/**
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* Determine if the text of a cell is being cropped or not.
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*/
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boolean isCellCropped(in long row, in nsITreeColumn col);
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/**
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* The view is responsible for calling these notification methods when
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* rows are added or removed. Index is the position at which the new
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* rows were added or at which rows were removed. For
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* non-contiguous additions/removals, this method should be called multiple times.
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*/
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void rowCountChanged(in long index, in long count);
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/**
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* Notify the tree that the view is about to perform a batch
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* update, that is, add, remove or invalidate several rows at once.
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* This must be followed by calling endUpdateBatch(), otherwise the tree
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* will get out of sync.
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*/
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void beginUpdateBatch();
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/**
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* Notify the tree that the view has completed a batch update.
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*/
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void endUpdateBatch();
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/**
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* Called on a theme switch to flush out the tree's style and image caches.
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*/
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void clearStyleAndImageCaches();
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};
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