|
Packit |
f0b94e |
/* vim: se cin sw=2 ts=2 et : */
|
|
Packit |
f0b94e |
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
Packit |
f0b94e |
*
|
|
Packit |
f0b94e |
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
Packit |
f0b94e |
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
Packit |
f0b94e |
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
#ifndef __mozilla_widget_GfxInfoCollector_h__
|
|
Packit |
f0b94e |
#define __mozilla_widget_GfxInfoCollector_h__
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
#include "mozilla/Attributes.h"
|
|
Packit |
f0b94e |
#include "nsStringFwd.h"
|
|
Packit |
f0b94e |
#include "js/RootingAPI.h"
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
namespace mozilla {
|
|
Packit |
f0b94e |
namespace widget {
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
/* this is handy wrapper around JSAPI to make it more pleasant to use.
|
|
Packit |
f0b94e |
* We collect the JSAPI errors and so that callers don't need to */
|
|
Packit |
f0b94e |
class MOZ_STACK_CLASS InfoObject {
|
|
Packit |
f0b94e |
friend class GfxInfoBase;
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
public:
|
|
Packit |
f0b94e |
void DefineProperty(const char *name, int value);
|
|
Packit |
f0b94e |
void DefineProperty(const char *name, nsAString &value);
|
|
Packit |
f0b94e |
void DefineProperty(const char *name, const char *value);
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
private:
|
|
Packit |
f0b94e |
// We need to ensure that this object lives on the stack so that GC sees it
|
|
Packit |
f0b94e |
// properly
|
|
Packit |
f0b94e |
explicit InfoObject(JSContext *aCx);
|
|
Packit |
f0b94e |
InfoObject(InfoObject &);
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
JSContext *mCx;
|
|
Packit |
f0b94e |
JS::Rooted<JSObject *> mObj;
|
|
Packit |
f0b94e |
bool mOk;
|
|
Packit |
f0b94e |
};
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
/*
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
Here's an example usage:
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
class Foo {
|
|
Packit |
f0b94e |
Foo::Foo() : mInfoCollector(this, &Foo::GetAweseomeness) {}
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
void GetAwesomeness(InfoObject &obj) {
|
|
Packit |
f0b94e |
obj.DefineProperty("awesome", mAwesome);
|
|
Packit |
f0b94e |
}
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
int mAwesome;
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
GfxInfoCollector<Foo> mInfoCollector;
|
|
Packit |
f0b94e |
}
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
This will define a property on the object
|
|
Packit |
f0b94e |
returned from calling getInfo() on a
|
|
Packit |
f0b94e |
GfxInfo object. e.g.
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
gfxInfo = Cc["@mozilla.org/gfx/info;1"].getService(Ci.nsIGfxInfo);
|
|
Packit |
f0b94e |
info = gfxInfo.getInfo();
|
|
Packit |
f0b94e |
if (info.awesome)
|
|
Packit |
f0b94e |
alert(info.awesome);
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
*/
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
class GfxInfoCollectorBase {
|
|
Packit |
f0b94e |
public:
|
|
Packit |
f0b94e |
GfxInfoCollectorBase();
|
|
Packit |
f0b94e |
virtual void GetInfo(InfoObject &obj) = 0;
|
|
Packit |
f0b94e |
virtual ~GfxInfoCollectorBase();
|
|
Packit |
f0b94e |
};
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
template <class T>
|
|
Packit |
f0b94e |
class GfxInfoCollector : public GfxInfoCollectorBase {
|
|
Packit |
f0b94e |
public:
|
|
Packit |
f0b94e |
GfxInfoCollector(T *aPointer, void (T::*aFunc)(InfoObject &obj))
|
|
Packit |
f0b94e |
: mPointer(aPointer), mFunc(aFunc) {}
|
|
Packit |
f0b94e |
virtual void GetInfo(InfoObject &obj) override { (mPointer->*mFunc)(obj); }
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
protected:
|
|
Packit |
f0b94e |
T *mPointer;
|
|
Packit |
f0b94e |
void (T::*mFunc)(InfoObject &obj);
|
|
Packit |
f0b94e |
};
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
} // namespace widget
|
|
Packit |
f0b94e |
} // namespace mozilla
|
|
Packit |
f0b94e |
|
|
Packit |
f0b94e |
#endif
|