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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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_MiddleCroppingBlockFrame_h
#define mozilla_MiddleCroppingBlockFrame_h
#include "nsBlockFrame.h"
#include "nsIAnonymousContentCreator.h"
#include "nsQueryFrame.h"
namespace mozilla {
// A block frame that implements a simplistic version of middle-cropping. Note
// that this is not fully l10n aware or complex-writing-system-friendly, so it's
// generally mostly useful for filenames / urls / etc.
class MiddleCroppingBlockFrame : public nsBlockFrame,
public nsIAnonymousContentCreator {
public:
virtual void GetUncroppedValue(nsAString&) = 0;
void UpdateDisplayedValueToUncroppedValue(bool aNotify);
NS_DECL_QUERYFRAME_TARGET(MiddleCroppingBlockFrame)
NS_DECL_QUERYFRAME
NS_DECL_ABSTRACT_FRAME(MiddleCroppingBlockFrame)
protected:
MiddleCroppingBlockFrame(ComputedStyle*, nsPresContext*, ClassID);
~MiddleCroppingBlockFrame();
void Reflow(nsPresContext*, ReflowOutput&, const ReflowInput&,
nsReflowStatus&) override;
nscoord GetMinISize(gfxContext*) override;
nscoord GetPrefISize(gfxContext*) override;
/**
* Crop aText to fit inside aWidth using the styles of aFrame.
* @return true if aText was modified
*/
bool CropTextToWidth(gfxContext& aRenderingContext, nscoord aWidth,
nsString& aText) const;
nsresult CreateAnonymousContent(nsTArray<ContentInfo>&) override;
void AppendAnonymousContentTo(nsTArray<nsIContent*>&,
uint32_t aFilter) override;
/**
* Updates the displayed value by using aValue.
*/
void UpdateDisplayedValue(const nsAString& aValue, bool aIsCropped,
bool aNotify);
void Destroy(DestroyContext&) override;
RefPtr<dom::Text> mTextNode;
bool mCropped = false;
};
} // namespace mozilla
#endif
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