71 lines
2.7 KiB
Java
71 lines
2.7 KiB
Java
/*
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* Copyright 1998-2000 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package javax.swing.text;
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/**
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* Interface for <code>View</code>s that have size dependent upon tabs.
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*
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* @author Timothy Prinzing
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* @author Scott Violet
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* @see TabExpander
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* @see LabelView
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* @see ParagraphView
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*/
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public interface TabableView {
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/**
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* Determines the desired span when using the given
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* tab expansion implementation. If a container
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* calls this method, it will do so prior to the
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* normal layout which would call getPreferredSpan.
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* A view implementing this should give the same
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* result in any subsequent calls to getPreferredSpan
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* along the axis of tab expansion.
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*
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* @param x the position the view would be located
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* at for the purpose of tab expansion >= 0.
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* @param e how to expand the tabs when encountered.
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* @return the desired span >= 0
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*/
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float getTabbedSpan(float x, TabExpander e);
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/**
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* Determines the span along the same axis as tab
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* expansion for a portion of the view. This is
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* intended for use by the TabExpander for cases
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* where the tab expansion involves aligning the
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* portion of text that doesn't have whitespace
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* relative to the tab stop. There is therefore
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* an assumption that the range given does not
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* contain tabs.
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*
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* @param p0 the starting location in the text document >= 0
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* @param p1 the ending location in the text document >= p0
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* @return the span >= 0
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*/
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float getPartialSpan(int p0, int p1);
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}
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