layout/xul/nsXULLabelFrame.cpp@925c144e1f1f (annotated)
layout/xul/nsXULLabelFrame.cpp
Fri, 16 Jan 2015 18:13:44 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Fri, 16 Jan 2015 18:13:44 +0100
- branch
- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
- permissions
- -rw-r--r--
Integrate suggestion from review to improve consistency with existing code.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | /* derived class of nsBlockFrame used for xul:label elements */ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "mozilla/EventStateManager.h" |
| michael@0 | 9 | #include "nsXULLabelFrame.h" |
| michael@0 | 10 | #include "nsHTMLParts.h" |
| michael@0 | 11 | #include "nsNameSpaceManager.h" |
| michael@0 | 12 | |
| michael@0 | 13 | using namespace mozilla; |
| michael@0 | 14 | |
| michael@0 | 15 | nsIFrame* |
| michael@0 | 16 | NS_NewXULLabelFrame(nsIPresShell* aPresShell, nsStyleContext* aContext) |
| michael@0 | 17 | { |
| michael@0 | 18 | nsXULLabelFrame* it = new (aPresShell) nsXULLabelFrame(aContext); |
| michael@0 | 19 | |
| michael@0 | 20 | it->SetFlags(NS_BLOCK_FLOAT_MGR | NS_BLOCK_MARGIN_ROOT); |
| michael@0 | 21 | |
| michael@0 | 22 | return it; |
| michael@0 | 23 | } |
| michael@0 | 24 | |
| michael@0 | 25 | NS_IMPL_FRAMEARENA_HELPERS(nsXULLabelFrame) |
| michael@0 | 26 | |
| michael@0 | 27 | // If you make changes to this function, check its counterparts |
| michael@0 | 28 | // in nsBoxFrame and nsTextBoxFrame |
| michael@0 | 29 | nsresult |
| michael@0 | 30 | nsXULLabelFrame::RegUnregAccessKey(bool aDoReg) |
| michael@0 | 31 | { |
| michael@0 | 32 | // if we have no content, we can't do anything |
| michael@0 | 33 | if (!mContent) |
| michael@0 | 34 | return NS_ERROR_FAILURE; |
| michael@0 | 35 | |
| michael@0 | 36 | // To filter out <label>s without a control attribute. |
| michael@0 | 37 | // XXXjag a side-effect is that we filter out anonymous <label>s |
| michael@0 | 38 | // in e.g. <menu>, <menuitem>, <button>. These <label>s inherit |
| michael@0 | 39 | // |accesskey| and would otherwise register themselves, overwriting |
| michael@0 | 40 | // the content we really meant to be registered. |
| michael@0 | 41 | if (!mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::control)) |
| michael@0 | 42 | return NS_OK; |
| michael@0 | 43 | |
| michael@0 | 44 | nsAutoString accessKey; |
| michael@0 | 45 | mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, accessKey); |
| michael@0 | 46 | |
| michael@0 | 47 | if (accessKey.IsEmpty()) |
| michael@0 | 48 | return NS_OK; |
| michael@0 | 49 | |
| michael@0 | 50 | // With a valid PresContext we can get the ESM |
| michael@0 | 51 | // and register the access key |
| michael@0 | 52 | EventStateManager* esm = PresContext()->EventStateManager(); |
| michael@0 | 53 | |
| michael@0 | 54 | uint32_t key = accessKey.First(); |
| michael@0 | 55 | if (aDoReg) |
| michael@0 | 56 | esm->RegisterAccessKey(mContent, key); |
| michael@0 | 57 | else |
| michael@0 | 58 | esm->UnregisterAccessKey(mContent, key); |
| michael@0 | 59 | |
| michael@0 | 60 | return NS_OK; |
| michael@0 | 61 | } |
| michael@0 | 62 | |
| michael@0 | 63 | ///////////////////////////////////////////////////////////////////////////// |
| michael@0 | 64 | // nsIFrame |
| michael@0 | 65 | |
| michael@0 | 66 | void |
| michael@0 | 67 | nsXULLabelFrame::Init(nsIContent* aContent, |
| michael@0 | 68 | nsIFrame* aParent, |
| michael@0 | 69 | nsIFrame* aPrevInFlow) |
| michael@0 | 70 | { |
| michael@0 | 71 | nsBlockFrame::Init(aContent, aParent, aPrevInFlow); |
| michael@0 | 72 | |
| michael@0 | 73 | // register access key |
| michael@0 | 74 | RegUnregAccessKey(true); |
| michael@0 | 75 | } |
| michael@0 | 76 | |
| michael@0 | 77 | void |
| michael@0 | 78 | nsXULLabelFrame::DestroyFrom(nsIFrame* aDestructRoot) |
| michael@0 | 79 | { |
| michael@0 | 80 | // unregister access key |
| michael@0 | 81 | RegUnregAccessKey(false); |
| michael@0 | 82 | nsBlockFrame::DestroyFrom(aDestructRoot); |
| michael@0 | 83 | } |
| michael@0 | 84 | |
| michael@0 | 85 | nsresult |
| michael@0 | 86 | nsXULLabelFrame::AttributeChanged(int32_t aNameSpaceID, |
| michael@0 | 87 | nsIAtom* aAttribute, |
| michael@0 | 88 | int32_t aModType) |
| michael@0 | 89 | { |
| michael@0 | 90 | nsresult rv = nsBlockFrame::AttributeChanged(aNameSpaceID, |
| michael@0 | 91 | aAttribute, aModType); |
| michael@0 | 92 | |
| michael@0 | 93 | // If the accesskey changed, register for the new value |
| michael@0 | 94 | // The old value has been unregistered in nsXULElement::SetAttr |
| michael@0 | 95 | if (aAttribute == nsGkAtoms::accesskey || aAttribute == nsGkAtoms::control) |
| michael@0 | 96 | RegUnregAccessKey(true); |
| michael@0 | 97 | |
| michael@0 | 98 | return rv; |
| michael@0 | 99 | } |
| michael@0 | 100 | |
| michael@0 | 101 | nsIAtom* |
| michael@0 | 102 | nsXULLabelFrame::GetType() const |
| michael@0 | 103 | { |
| michael@0 | 104 | return nsGkAtoms::XULLabelFrame; |
| michael@0 | 105 | } |
| michael@0 | 106 | |
| michael@0 | 107 | ///////////////////////////////////////////////////////////////////////////// |
| michael@0 | 108 | // Diagnostics |
| michael@0 | 109 | |
| michael@0 | 110 | #ifdef DEBUG_FRAME_DUMP |
| michael@0 | 111 | nsresult |
| michael@0 | 112 | nsXULLabelFrame::GetFrameName(nsAString& aResult) const |
| michael@0 | 113 | { |
| michael@0 | 114 | return MakeFrameName(NS_LITERAL_STRING("XULLabel"), aResult); |
| michael@0 | 115 | } |
| michael@0 | 116 | #endif |
