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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_SVGSTRINGLIST_H__
#define MOZILLA_SVGSTRINGLIST_H__
#include "nsDebug.h"
#include "nsTArray.h"
#include "nsString.h" // IWYU pragma: keep
namespace mozilla {
/**
*
* The DOM wrapper class for this class is DOMSVGStringList.
*/
class SVGStringList
{
friend class DOMSVGStringList;
public:
SVGStringList() : mIsSet(false), mIsCommaSeparated(false) {}
~SVGStringList(){}
void SetIsCommaSeparated(bool aIsCommaSeparated) {
mIsCommaSeparated = aIsCommaSeparated;
}
nsresult SetValue(const nsAString& aValue);
void Clear() {
mStrings.Clear();
mIsSet = false;
}
/// This may return an incomplete string on OOM, but that's acceptable.
void GetValue(nsAString& aValue) const;
bool IsEmpty() const {
return mStrings.IsEmpty();
}
uint32_t Length() const {
return mStrings.Length();
}
const nsAString& operator[](uint32_t aIndex) const {
return mStrings[aIndex];
}
bool operator==(const SVGStringList& rhs) const {
return mStrings == rhs.mStrings;
}
bool SetCapacity(uint32_t size) {
return mStrings.SetCapacity(size, fallible);
}
void Compact() {
mStrings.Compact();
}
// Returns true if the value of this stringlist has been explicitly
// set by markup or a DOM call, false otherwise.
bool IsExplicitlySet() const
{ return mIsSet; }
// Access to methods that can modify objects of this type is deliberately
// limited. This is to reduce the chances of someone modifying objects of
// this type without taking the necessary steps to keep DOM wrappers in sync.
// If you need wider access to these methods, consider adding a method to
// SVGAnimatedStringList and having that class act as an intermediary so it
// can take care of keeping DOM wrappers in sync.
protected:
/**
* This may fail on OOM if the internal capacity needs to be increased, in
* which case the list will be left unmodified.
*/
nsresult CopyFrom(const SVGStringList& rhs);
nsAString& operator[](uint32_t aIndex) {
return mStrings[aIndex];
}
/**
* This may fail (return false) on OOM if the internal capacity is being
* increased, in which case the list will be left unmodified.
*/
bool SetLength(uint32_t aStringOfItems) {
return mStrings.SetLength(aStringOfItems, fallible);
}
private:
// Marking the following private only serves to show which methods are only
// used by our friend classes (as opposed to our subclasses) - it doesn't
// really provide additional safety.
bool InsertItem(uint32_t aIndex, const nsAString &aString) {
if (aIndex >= mStrings.Length()) {
aIndex = mStrings.Length();
}
if (mStrings.InsertElementAt(aIndex, aString, fallible)) {
mIsSet = true;
return true;
}
return false;
}
void ReplaceItem(uint32_t aIndex, const nsAString &aString) {
MOZ_ASSERT(aIndex < mStrings.Length(),
"DOM wrapper caller should have raised INDEX_SIZE_ERR");
mStrings[aIndex] = aString;
}
void RemoveItem(uint32_t aIndex) {
MOZ_ASSERT(aIndex < mStrings.Length(),
"DOM wrapper caller should have raised INDEX_SIZE_ERR");
mStrings.RemoveElementAt(aIndex);
}
bool AppendItem(const nsAString &aString) {
if (mStrings.AppendElement(aString, fallible)) {
mIsSet = true;
return true;
}
return false;
}
protected:
/* See SVGLengthList for the rationale for using FallibleTArray<float> instead
* of FallibleTArray<float, 1>.
*/
FallibleTArray<nsString> mStrings;
bool mIsSet;
bool mIsCommaSeparated;
};
} // namespace mozilla
#endif // MOZILLA_SVGSTRINGLIST_H__
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