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/**
* Copyright (C) 2014-2018 Philip Helger (www.helger.com)
* philip[at]helger[dot]com
*
* 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.helger.css.decl;
import java.io.Serializable;
import java.util.function.Predicate;
import javax.annotation.Nonnegative;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.concurrent.NotThreadSafe;
import com.helger.commons.ValueEnforcer;
import com.helger.commons.annotation.ReturnsMutableCopy;
import com.helger.commons.collection.impl.CommonsArrayList;
import com.helger.commons.collection.impl.ICommonsList;
import com.helger.commons.state.EChange;
/**
* Abstract base class for all classes having top-level rules.
*
* @author Philip Helger
* @since 5.0.5
*/
@NotThreadSafe
public abstract class AbstractHasTopLevelRules implements Serializable
{
protected final ICommonsList m_aRules = new CommonsArrayList <> ();
public AbstractHasTopLevelRules ()
{}
/**
* Check if any top-level rule. This method only considers top-level rules and
* not @import and @namespace rules!
*
* @return true if at least one top-level rule is present,
* false if otherwise.
*/
public boolean hasRules ()
{
return m_aRules.isNotEmpty ();
}
/**
* Get the number of total contained top-level rules. This method only
* considers top-level rules and not @import and
* @namespace rules!
*
* @return The number of total contained top-level rules. Always ≥ 0.
*/
@Nonnegative
public int getRuleCount ()
{
return m_aRules.size ();
}
/**
* Get the top-level rule at the specified index.
*
* @param nIndex
* The index to be resolved. Should be ≥ 0 and <
* {@link #getRuleCount()}.
* @return null if an invalid index was specified.
* @since 3.7.4
* @deprecated Use {@link #getRuleAtIndex(int)} instead
*/
@Nullable
@Deprecated
public ICSSTopLevelRule getRule (@Nonnegative final int nIndex)
{
return getRuleAtIndex (nIndex);
}
/**
* Get the top-level rule at the specified index.
*
* @param nIndex
* The index to be resolved. Should be ≥ 0 and <
* {@link #getRuleCount()}.
* @return null if an invalid index was specified.
* @since 3.7.4
*/
@Nullable
public ICSSTopLevelRule getRuleAtIndex (@Nonnegative final int nIndex)
{
return m_aRules.getAtIndex (nIndex);
}
/**
* Add a new top-level rule at the end. This method only considers top-level
* rules and not @import and @namespace rules!
*
* @param aRule
* The rule to be added. May not be null.
* @return this
*/
@Nonnull
public AbstractHasTopLevelRules addRule (@Nonnull final ICSSTopLevelRule aRule)
{
ValueEnforcer.notNull (aRule, "Rule");
m_aRules.add (aRule);
return this;
}
/**
* Add a new top-level rule at the specified index. This method only considers
* top-level rules and not @import and @namespace
* rules!
*
* @param nIndex
* The index where the top-level rule should be added. Must be ≥ 0.
* @param aRule
* The rule to be added. May not be null.
* @return this
*/
@Nonnull
public AbstractHasTopLevelRules addRule (@Nonnegative final int nIndex, @Nonnull final ICSSTopLevelRule aRule)
{
ValueEnforcer.isGE0 (nIndex, "Index");
ValueEnforcer.notNull (aRule, "Rule");
if (nIndex >= getRuleCount ())
m_aRules.add (aRule);
else
m_aRules.add (nIndex, aRule);
return this;
}
/**
* Remove the specified top-level rule. This method only considers top-level
* rules and not @import and @namespace rules!
*
* @param aRule
* The rule to be removed. May be null.
* @return {@link EChange#CHANGED} if the rule was successfully removed,
* {@link EChange#UNCHANGED} otherwise. Never null.
*/
@Nonnull
public EChange removeRule (@Nullable final ICSSTopLevelRule aRule)
{
return m_aRules.removeObject (aRule);
}
/**
* Remove the rule at the specified index. This method only considers
* top-level rules and not @import and @namespace
* rules!
*
* @param nRuleIndex
* The index of the rule to be removed. Should be ≥ 0.
* @return {@link EChange#CHANGED} if the rule at the specified index was
* successfully removed, {@link EChange#UNCHANGED} otherwise. Never
* null.
*/
@Nonnull
public EChange removeRule (@Nonnegative final int nRuleIndex)
{
return m_aRules.removeAtIndex (nRuleIndex);
}
/**
* Remove all rules matching the passed predicate.
*
* @param aFilter
* The predicate to apply for deletion. May not be null.
* @return {@link EChange#CHANGED} it at least one rule was removed,
* {@link EChange#UNCHANGED} otherwise.
* @since 5.0.0
*/
@Nonnull
public EChange removeRules (@Nonnull final Predicate aFilter)
{
return EChange.valueOf (m_aRules.removeIf (aFilter));
}
/**
* Remove all top-level rules.
*
* @return {@link EChange#CHANGED} if any rule was removed,
* {@link EChange#UNCHANGED} otherwise. Never null.
* @since 3.7.3
*/
@Nonnull
public EChange removeAllRules ()
{
return m_aRules.removeAll ();
}
/**
* Get a copy of all contained top-level rules. This method only considers
* top-level rules and not @import and @namespace
* rules!
*
* @return A copy of all contained top-level rules. Never null.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList getAllRules ()
{
return m_aRules.getClone ();
}
/**
* Get a copy of all contained top-level rules. This method only considers
* top-level rules and not @import and @namespace
* rules!
*
* @param aFilter
* The predicate to be applied
* @return A copy of all contained top-level rules. Never null.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList getAllRules (@Nonnull final Predicate aFilter)
{
return m_aRules.getAll (aFilter);
}
/**
* Check if at least one of the top-level rules is a style rule (implementing
* {@link CSSStyleRule}).
*
* @return true if at least one style rule is contained,
* false otherwise.
*/
public boolean hasStyleRules ()
{
return m_aRules.containsAny (r -> r instanceof CSSStyleRule);
}
/**
* Get the number of top-level rules that are style rules (implementing
* {@link CSSStyleRule}).
*
* @return The number of contained style rules. Always ≥ 0.
*/
@Nonnegative
public int getStyleRuleCount ()
{
return m_aRules.getCount (r -> r instanceof CSSStyleRule);
}
/**
* Get the style rule at the specified index.
*
* @param nIndex
* The index to be resolved. Should be ≥ 0 and <
* {@link #getStyleRuleCount()}.
* @return null if an invalid index was specified.
* @since 3.7.4
*/
@Nullable
public CSSStyleRule getStyleRuleAtIndex (@Nonnegative final int nIndex)
{
return m_aRules.getAtIndexMapped (r -> r instanceof CSSStyleRule, nIndex, r -> (CSSStyleRule) r);
}
/**
* Get a list of all top-level rules that are style rules (implementing
* {@link CSSStyleRule}).
*
* @return A copy of all contained style rules. Never null.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList getAllStyleRules ()
{
return m_aRules.getAllMapped (r -> r instanceof CSSStyleRule, r -> (CSSStyleRule) r);
}
/**
* Check if at least one of the top-level rules is a page rule (implementing
* {@link CSSPageRule}).
*
* @return true if at least one @page rule is
* contained, false otherwise.
*/
public boolean hasPageRules ()
{
return m_aRules.containsAny (r -> r instanceof CSSPageRule);
}
/**
* Get the number of top-level rules that are page rules (implementing
* {@link CSSPageRule}).
*
* @return The number of contained @page rules. Always ≥ 0.
*/
@Nonnegative
public int getPageRuleCount ()
{
return m_aRules.getCount (r -> r instanceof CSSPageRule);
}
/**
* Get the @page rule at the specified index.
*
* @param nIndex
* The index to be resolved. Should be ≥ 0 and <
* {@link #getPageRuleCount()}.
* @return null if an invalid index was specified.
* @since 3.7.4
*/
@Nullable
public CSSPageRule getPageRuleAtIndex (@Nonnegative final int nIndex)
{
return m_aRules.getAtIndexMapped (r -> r instanceof CSSPageRule, nIndex, r -> (CSSPageRule) r);
}
/**
* Get a list of all top-level rules that are page rules (implementing
* {@link CSSPageRule}).
*
* @return A copy of all contained @page rules. Never
* null.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList getAllPageRules ()
{
return m_aRules.getAllMapped (r -> r instanceof CSSPageRule, r -> (CSSPageRule) r);
}
/**
* Check if at least one of the top-level rules is a media rule (implementing
* {@link CSSMediaRule}).
*
* @return true if at least one @media rule is
* contained, false otherwise.
*/
public boolean hasMediaRules ()
{
return m_aRules.containsAny (r -> r instanceof CSSMediaRule);
}
/**
* Get the number of top-level rules that are media rules (implementing
* {@link CSSMediaRule}).
*
* @return The number of contained @media rules. Always ≥ 0.
*/
@Nonnegative
public int getMediaRuleCount ()
{
return m_aRules.getCount (r -> r instanceof CSSMediaRule);
}
/**
* Get the @media rule at the specified index.
*
* @param nIndex
* The index to be resolved. Should be ≥ 0 and <
* {@link #getMediaRuleCount()}.
* @return null if an invalid index was specified.
* @since 3.7.4
*/
@Nullable
public CSSMediaRule getMediaRuleAtIndex (@Nonnegative final int nIndex)
{
return m_aRules.getAtIndexMapped (r -> r instanceof CSSMediaRule, nIndex, r -> (CSSMediaRule) r);
}
/**
* Get a list of all top-level rules that are media rules (implementing
* {@link CSSMediaRule}).
*
* @return A copy of all contained @media rules. Never
* null.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList getAllMediaRules ()
{
return m_aRules.getAllMapped (r -> r instanceof CSSMediaRule, r -> (CSSMediaRule) r);
}
/**
* Check if at least one of the top-level rules is a font-face rule
* (implementing {@link CSSFontFaceRule}).
*
* @return true if at least one @font-face rule is
* contained, false otherwise.
*/
public boolean hasFontFaceRules ()
{
return m_aRules.containsAny (r -> r instanceof CSSFontFaceRule);
}
/**
* Get the number of top-level rules that are font-face rules (implementing
* {@link CSSFontFaceRule}).
*
* @return The number of contained @font-face rules. Always ≥
* 0.
*/
@Nonnegative
public int getFontFaceRuleCount ()
{
return m_aRules.getCount (r -> r instanceof CSSFontFaceRule);
}
/**
* Get the @font-face rule at the specified index.
*
* @param nIndex
* The index to be resolved. Should be ≥ 0 and <
* {@link #getFontFaceRuleCount()}.
* @return null if an invalid index was specified.
* @since 3.7.4
*/
@Nullable
public CSSFontFaceRule getFontFaceRuleAtIndex (@Nonnegative final int nIndex)
{
return m_aRules.getAtIndexMapped (r -> r instanceof CSSFontFaceRule, nIndex, r -> (CSSFontFaceRule) r);
}
/**
* Get a list of all top-level rules that are font-face rules (implementing
* {@link CSSFontFaceRule}).
*
* @return A copy of all contained @font-face rules. Never
* null.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList getAllFontFaceRules ()
{
return m_aRules.getAllMapped (r -> r instanceof CSSFontFaceRule, r -> (CSSFontFaceRule) r);
}
/**
* Check if at least one of the top-level rules is a keyframes rule
* (implementing {@link CSSKeyframesRule}).
*
* @return true if at least one @keyframes rule is
* contained, false otherwise.
*/
public boolean hasKeyframesRules ()
{
return m_aRules.containsAny (r -> r instanceof CSSKeyframesRule);
}
/**
* Get the number of top-level rules that are keyframes rules (implementing
* {@link CSSKeyframesRule}).
*
* @return The number of contained @keyframes rules. Always ≥
* 0.
*/
@Nonnegative
public int getKeyframesRuleCount ()
{
return m_aRules.getCount (r -> r instanceof CSSKeyframesRule);
}
/**
* Get the @keyframes rule at the specified index.
*
* @param nIndex
* The index to be resolved. Should be ≥ 0 and <
* {@link #getKeyframesRuleCount()}.
* @return null if an invalid index was specified.
* @since 3.7.4
*/
@Nullable
public CSSKeyframesRule getKeyframesRuleAtIndex (@Nonnegative final int nIndex)
{
return m_aRules.getAtIndexMapped (r -> r instanceof CSSKeyframesRule, nIndex, r -> (CSSKeyframesRule) r);
}
/**
* Get a list of all top-level rules that are keyframes rules (implementing
* {@link CSSKeyframesRule}).
*
* @return A copy of all contained @keyframes rules. Never
* null.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList getAllKeyframesRules ()
{
return m_aRules.getAllMapped (r -> r instanceof CSSKeyframesRule, r -> (CSSKeyframesRule) r);
}
/**
* Check if at least one of the top-level rules is a viewport rule
* (implementing {@link CSSViewportRule}).
*
* @return true if at least one @viewport rule is
* contained, false otherwise.
*/
public boolean hasViewportRules ()
{
return m_aRules.containsAny (r -> r instanceof CSSViewportRule);
}
/**
* Get the number of top-level rules that are viewport rules (implementing
* {@link CSSViewportRule}).
*
* @return The number of contained @viewport rules. Always ≥
* 0.
*/
@Nonnegative
public int getViewportRuleCount ()
{
return m_aRules.getCount (r -> r instanceof CSSViewportRule);
}
/**
* Get the @viewport rule at the specified index.
*
* @param nIndex
* The index to be resolved. Should be ≥ 0 and <
* {@link #getViewportRuleCount()}.
* @return null if an invalid index was specified.
* @since 3.7.4
*/
@Nullable
public CSSViewportRule getViewportRuleAtIndex (@Nonnegative final int nIndex)
{
return m_aRules.getAtIndexMapped (r -> r instanceof CSSViewportRule, nIndex, r -> (CSSViewportRule) r);
}
/**
* Get a list of all top-level rules that are viewport rules (implementing
* {@link CSSViewportRule}).
*
* @return A copy of all contained @viewport rules. Never
* null.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList getAllViewportRules ()
{
return m_aRules.getAllMapped (r -> r instanceof CSSViewportRule, r -> (CSSViewportRule) r);
}
/**
* Check if at least one of the top-level rules is a supports rule
* (implementing {@link CSSSupportsRule}).
*
* @return true if at least one @supports rule is
* contained, false otherwise.
*/
public boolean hasSupportsRules ()
{
return m_aRules.containsAny (r -> r instanceof CSSSupportsRule);
}
/**
* Get the number of top-level rules that are support rules (implementing
* {@link CSSSupportsRule}).
*
* @return The number of contained @supports rules. Always ≥
* 0.
*/
@Nonnegative
public int getSupportsRuleCount ()
{
return m_aRules.getCount (r -> r instanceof CSSSupportsRule);
}
/**
* Get the @supports rule at the specified index.
*
* @param nIndex
* The index to be resolved. Should be ≥ 0 and <
* {@link #getSupportsRuleCount()}.
* @return null if an invalid index was specified.
* @since 3.7.4
*/
@Nullable
public CSSSupportsRule getSupportsRuleAtIndex (@Nonnegative final int nIndex)
{
return m_aRules.getAtIndexMapped (r -> r instanceof CSSSupportsRule, nIndex, r -> (CSSSupportsRule) r);
}
/**
* Get a list of all top-level rules that are support rules (implementing
* {@link CSSSupportsRule}).
*
* @return A copy of all contained @supports rules. Never
* null.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList getAllSupportsRules ()
{
return m_aRules.getAllMapped (r -> r instanceof CSSSupportsRule, r -> (CSSSupportsRule) r);
}
/**
* Check if at least one of the top-level rules is an unknown rule
* (implementing {@link CSSUnknownRule}).
*
* @return true if at least one unknown @ rule is
* contained, false otherwise.
*/
public boolean hasUnknownRules ()
{
return m_aRules.containsAny (r -> r instanceof CSSUnknownRule);
}
/**
* Get the number of top-level rules that are unknown rules (implementing
* {@link CSSUnknownRule}).
*
* @return The number of contained unknown @ rules. Always ≥
* 0.
*/
@Nonnegative
public int getUnknownRuleCount ()
{
return m_aRules.getCount (r -> r instanceof CSSUnknownRule);
}
/**
* Get the unknown rule at the specified index.
*
* @param nIndex
* The index to be resolved. Should be ≥ 0 and <
* {@link #getUnknownRuleCount()}.
* @return null if an invalid index was specified.
* @since 3.7.4
*/
@Nullable
public CSSUnknownRule getUnknownRuleAtIndex (@Nonnegative final int nIndex)
{
return m_aRules.getAtIndexMapped (r -> r instanceof CSSUnknownRule, nIndex, r -> (CSSUnknownRule) r);
}
/**
* Get a list of all top-level rules that are unknown rules (implementing
* {@link CSSUnknownRule}).
*
* @return A copy of all contained unknown @ rules. Never
* null.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList getAllUnknownRules ()
{
return m_aRules.getAllMapped (r -> r instanceof CSSUnknownRule, r -> (CSSUnknownRule) r);
}
}
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