| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.openapi.editor; |
| |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.List; |
| |
| /** |
| * Defines contract for the services that bring <code>'soft wrapping'</code> to the editor. |
| * <p/> |
| * <code>'Soft wrap'</code> here means representation of the line that exceeds right component viewport margin as if it is wrapped. |
| * No changes are introduced to the actual document/file system during that, i.e. it's a pure <code>'view'</code> facility. |
| * <p/> |
| * <b>Example:</b> |
| * <p/> |
| * <b>Raw text (as stored at file system)</b> |
| * <p/> |
| * <pre> |
| * public class Test { | <- right margin |
| * | |
| * public void baz() { | |
| * foo("test1", "test2", "test3", "test4", "test5", "test6"); |
| * } | |
| * | |
| * public void foo(Object ... args) { | |
| * } | |
| * } | |
| * </pre> |
| * <p/> |
| * <b>The same text with soft wraps as shown to end-user at editor</b> |
| * <p/> |
| * <pre> |
| * public class Test { | <- right margin |
| * | |
| * public void baz() { | |
| * foo("test1", "test2", "test3", "test4", "test5", | |
| * "test6"); | |
| * } | |
| * | |
| * public void foo(Object ... args) { | |
| * } | |
| * } | |
| * </pre> |
| * <p/> |
| * Another important soft wrap feature is that as soon as the user starts typing on a line which representation is affected by |
| * soft wrap (e.g. starts adding new call argument after <code>"test6"</code> at example above), that soft wraps becomes |
| * <code>'hard wrap'</code>, i.e. virtual changes introduced by it are flushed to the underlying document. |
| * <p/> |
| * <b>Note:</b> soft wrap is assumed to provide as user-friendly indentation for those wrapped line as possible |
| * (note that <code>"test6"</code> at example below is aligned to the parameters start). |
| * <p/> |
| * Implementations of this interface are not obliged to be thread-safe. |
| * |
| * @author Denis Zhdanov |
| * @since Jun 8, 2010 3:15:18 PM |
| */ |
| public interface SoftWrapModel { |
| |
| /** |
| * Allows to answer if <code>'soft wrap'</code> feature is enabled. |
| * |
| * @return <code>true</code> if <code>'soft wraps'</code> are enabled; <code>false</code> otherwise |
| */ |
| boolean isSoftWrappingEnabled(); |
| |
| /** |
| * Asks current model for the soft wrap registered for the given document offset if any. |
| * |
| * @param offset target document offset |
| * @return soft wrap registered for the given offset within the current model if any; <code>null</code> otherwise |
| */ |
| @Nullable |
| SoftWrap getSoftWrap(int offset); |
| |
| /** |
| * Allows to ask current model about all soft wraps registered for the given document offsets range. |
| * |
| * @param start start document offset range to use (inclusive) |
| * @param end end document offset range to use (inclusive) |
| * @return all soft wraps registered for the target document offsets range |
| */ |
| @NotNull |
| List<? extends SoftWrap> getSoftWrapsForRange(int start, int end); |
| |
| /** |
| * Allows to ask current model about all soft wraps registered for the given document line. |
| * |
| * @param documentLine target document line |
| * @return all soft wraps registered for the given document line |
| */ |
| @NotNull |
| List<? extends SoftWrap> getSoftWrapsForLine(int documentLine); |
| |
| /** |
| * Allows to answer if given soft wrap is shown. |
| * <p/> |
| * The soft wrap may be not shown if it's located, for example, inside collapsed folding region. |
| * |
| * @param softWrap soft wrap to check |
| * @return <code>true</code> if given soft wrap is visible; <code>false</code> otherwise |
| */ |
| boolean isVisible(SoftWrap softWrap); |
| |
| /** |
| * Notifies current model that target document is about to be changed at current caret location. |
| * <p/> |
| * Primary purpose of this method is to perform {@code 'soft wrap' -> 'hard wrap'} conversion if the user types in virtual |
| * soft wraps-introduced space. |
| */ |
| void beforeDocumentChangeAtCaret(); |
| |
| /** |
| * Allows to answer if given visual position points to soft wrap-introduced virtual space. |
| * |
| * @param position target visual position to check |
| * @return <code>true</code> if given visual position points to soft wrap-introduced virtual space; |
| * <code>false</code> otherwise |
| */ |
| boolean isInsideSoftWrap(@NotNull VisualPosition position); |
| |
| /** |
| * Allows to answer if given visual position points to soft wrap-introduced virtual space or points just before soft wrap. |
| * |
| * @param visual target visual position to check |
| * @return <code>true</code> if given visual position points to soft wrap-introduced virtual space; |
| * <code>false</code> otherwise |
| */ |
| boolean isInsideOrBeforeSoftWrap(@NotNull VisualPosition visual); |
| |
| /** |
| * Callback method to ask soft wrap model to release all resources. |
| */ |
| void release(); |
| } |