mirror of
https://github.com/mozilla/gecko-dev.git
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98f07902ce
(get rid of extra quotes, always set .prevValue if it exists). Bug 107526, r=fabian, sr=jst.
195 lines
6.6 KiB
C++
195 lines
6.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsHTMLValue_h___
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#define nsHTMLValue_h___
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#include "nscore.h"
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#include "nsColor.h"
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#include "nsString.h"
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#include "nsISupports.h"
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enum nsHTMLUnit {
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eHTMLUnit_Null = 0, // (n/a) null unit, value is not specified
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eHTMLUnit_Empty = 1, // (n/a) empty unit, value is not specified
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eHTMLUnit_String = 10, // (nsString) a string value
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eHTMLUnit_ISupports = 20, // (nsISupports*) a ref counted interface
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eHTMLUnit_Integer = 50, // (int) simple value
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eHTMLUnit_Enumerated = 51, // (int) value has enumerated meaning
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eHTMLUnit_Proportional = 52, // (int) value is a relative proportion of some whole
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eHTMLUnit_Color = 80, // (color) an RGBA value
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eHTMLUnit_ColorName = 81, // (nsString/color) a color name value
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eHTMLUnit_Percent = 90, // (float) 1.0 == 100%) value is percentage of something
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// Screen relative measure
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eHTMLUnit_Pixel = 600 // (int) screen pixels
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};
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class nsHTMLValue {
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public:
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nsHTMLValue(nsHTMLUnit aUnit = eHTMLUnit_Null);
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nsHTMLValue(PRInt32 aValue, nsHTMLUnit aUnit);
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nsHTMLValue(float aValue);
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nsHTMLValue(const nsAReadableString& aValue, nsHTMLUnit aUnit = eHTMLUnit_String);
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nsHTMLValue(nsISupports* aValue);
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nsHTMLValue(nscolor aValue);
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nsHTMLValue(const nsHTMLValue& aCopy);
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~nsHTMLValue(void);
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nsHTMLValue& operator=(const nsHTMLValue& aCopy);
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PRBool operator==(const nsHTMLValue& aOther) const;
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PRBool operator!=(const nsHTMLValue& aOther) const;
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PRUint32 HashValue(void) const;
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nsHTMLUnit GetUnit(void) const { return mUnit; }
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PRInt32 GetIntValue(void) const;
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PRInt32 GetPixelValue(void) const;
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float GetPercentValue(void) const;
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nsAWritableString& GetStringValue(nsAWritableString& aBuffer) const;
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nsISupports* GetISupportsValue(void) const;
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nscolor GetColorValue(void) const;
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void Reset(void);
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void SetIntValue(PRInt32 aValue, nsHTMLUnit aUnit);
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void SetPixelValue(PRInt32 aValue);
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void SetPercentValue(float aValue);
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void SetStringValue(const nsAReadableString& aValue, nsHTMLUnit aUnit = eHTMLUnit_String);
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void SetISupportsValue(nsISupports* aValue);
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void SetColorValue(nscolor aValue);
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void SetEmptyValue(void);
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#ifdef DEBUG
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void AppendToString(nsAWritableString& aBuffer) const;
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#endif
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protected:
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nsHTMLUnit mUnit;
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union {
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PRInt32 mInt;
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float mFloat;
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PRUnichar* mString;
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nsISupports* mISupports;
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nscolor mColor;
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} mValue;
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};
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inline PRInt32 nsHTMLValue::GetIntValue(void) const
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{
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NS_ASSERTION((mUnit == eHTMLUnit_String) ||
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(mUnit == eHTMLUnit_Integer) ||
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(mUnit == eHTMLUnit_Enumerated) ||
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(mUnit == eHTMLUnit_Proportional), "not an int value");
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if ((mUnit == eHTMLUnit_Integer) ||
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(mUnit == eHTMLUnit_Enumerated) ||
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(mUnit == eHTMLUnit_Proportional)) {
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return mValue.mInt;
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}
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else if (mUnit == eHTMLUnit_String) {
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if (mValue.mString) {
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PRInt32 err=0;
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nsAutoString str(mValue.mString); // XXX copy. new string APIs will make this better, right?
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return str.ToInteger(&err);
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}
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}
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return 0;
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}
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inline PRInt32 nsHTMLValue::GetPixelValue(void) const
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{
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NS_ASSERTION((mUnit == eHTMLUnit_Pixel), "not a pixel value");
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if (mUnit == eHTMLUnit_Pixel) {
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return mValue.mInt;
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}
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return 0;
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}
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inline float nsHTMLValue::GetPercentValue(void) const
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{
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NS_ASSERTION(mUnit == eHTMLUnit_Percent, "not a percent value");
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if (mUnit == eHTMLUnit_Percent) {
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return mValue.mFloat;
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}
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return 0.0f;
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}
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inline nsAWritableString& nsHTMLValue::GetStringValue(nsAWritableString& aBuffer) const
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{
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NS_ASSERTION((mUnit == eHTMLUnit_String) || (mUnit == eHTMLUnit_ColorName) ||
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(mUnit == eHTMLUnit_Null), "not a string value");
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aBuffer.SetLength(0);
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if (((mUnit == eHTMLUnit_String) || (mUnit == eHTMLUnit_ColorName)) &&
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(nsnull != mValue.mString)) {
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aBuffer.Append(mValue.mString);
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}
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return aBuffer;
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}
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inline nsISupports* nsHTMLValue::GetISupportsValue(void) const
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{
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NS_ASSERTION(mUnit == eHTMLUnit_ISupports, "not an ISupports value");
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if (mUnit == eHTMLUnit_ISupports) {
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nsISupports *result = mValue.mISupports;
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NS_IF_ADDREF(result);
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return result;
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}
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return nsnull;
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}
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inline nscolor nsHTMLValue::GetColorValue(void) const
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{
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NS_ASSERTION((mUnit == eHTMLUnit_Color) || (mUnit == eHTMLUnit_ColorName),
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"not a color value");
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if (mUnit == eHTMLUnit_Color) {
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return mValue.mColor;
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}
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if ((mUnit == eHTMLUnit_ColorName) && (mValue.mString)) {
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nscolor color;
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if (NS_ColorNameToRGB(nsAutoString(mValue.mString), &color)) {
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return color;
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}
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}
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return NS_RGB(0,0,0);
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}
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inline PRBool nsHTMLValue::operator!=(const nsHTMLValue& aOther) const
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{
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return PRBool(! ((*this) == aOther));
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}
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#endif /* nsHTMLValue_h___ */
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