1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/xul/tree/nsTreeColFrame.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,200 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "nsCOMPtr.h"
1.10 +#include "nsTreeColFrame.h"
1.11 +#include "nsGkAtoms.h"
1.12 +#include "nsIContent.h"
1.13 +#include "nsStyleContext.h"
1.14 +#include "nsNameSpaceManager.h"
1.15 +#include "nsIBoxObject.h"
1.16 +#include "nsTreeBoxObject.h"
1.17 +#include "nsIDOMElement.h"
1.18 +#include "nsITreeBoxObject.h"
1.19 +#include "nsITreeColumns.h"
1.20 +#include "nsIDOMXULTreeElement.h"
1.21 +#include "nsDisplayList.h"
1.22 +#include "nsTreeBodyFrame.h"
1.23 +
1.24 +//
1.25 +// NS_NewTreeColFrame
1.26 +//
1.27 +// Creates a new col frame
1.28 +//
1.29 +nsIFrame*
1.30 +NS_NewTreeColFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
1.31 +{
1.32 + return new (aPresShell) nsTreeColFrame(aPresShell, aContext);
1.33 +}
1.34 +
1.35 +NS_IMPL_FRAMEARENA_HELPERS(nsTreeColFrame)
1.36 +
1.37 +// Destructor
1.38 +nsTreeColFrame::~nsTreeColFrame()
1.39 +{
1.40 +}
1.41 +
1.42 +void
1.43 +nsTreeColFrame::Init(nsIContent* aContent,
1.44 + nsIFrame* aParent,
1.45 + nsIFrame* aPrevInFlow)
1.46 +{
1.47 + nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
1.48 + InvalidateColumns();
1.49 +}
1.50 +
1.51 +void
1.52 +nsTreeColFrame::DestroyFrom(nsIFrame* aDestructRoot)
1.53 +{
1.54 + InvalidateColumns(false);
1.55 + nsBoxFrame::DestroyFrom(aDestructRoot);
1.56 +}
1.57 +
1.58 +class nsDisplayXULTreeColSplitterTarget : public nsDisplayItem {
1.59 +public:
1.60 + nsDisplayXULTreeColSplitterTarget(nsDisplayListBuilder* aBuilder,
1.61 + nsIFrame* aFrame) :
1.62 + nsDisplayItem(aBuilder, aFrame) {
1.63 + MOZ_COUNT_CTOR(nsDisplayXULTreeColSplitterTarget);
1.64 + }
1.65 +#ifdef NS_BUILD_REFCNT_LOGGING
1.66 + virtual ~nsDisplayXULTreeColSplitterTarget() {
1.67 + MOZ_COUNT_DTOR(nsDisplayXULTreeColSplitterTarget);
1.68 + }
1.69 +#endif
1.70 +
1.71 + virtual void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
1.72 + HitTestState* aState,
1.73 + nsTArray<nsIFrame*> *aOutFrames) MOZ_OVERRIDE;
1.74 + NS_DISPLAY_DECL_NAME("XULTreeColSplitterTarget", TYPE_XUL_TREE_COL_SPLITTER_TARGET)
1.75 +};
1.76 +
1.77 +void
1.78 +nsDisplayXULTreeColSplitterTarget::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
1.79 + HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames)
1.80 +{
1.81 + nsRect rect = aRect - ToReferenceFrame();
1.82 + // If we are in either in the first 4 pixels or the last 4 pixels, we're going to
1.83 + // do something really strange. Check for an adjacent splitter.
1.84 + bool left = false;
1.85 + bool right = false;
1.86 + if (mFrame->GetSize().width - nsPresContext::CSSPixelsToAppUnits(4) <= rect.XMost()) {
1.87 + right = true;
1.88 + } else if (nsPresContext::CSSPixelsToAppUnits(4) > rect.x) {
1.89 + left = true;
1.90 + }
1.91 +
1.92 + // Swap left and right for RTL trees in order to find the correct splitter
1.93 + if (mFrame->StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL) {
1.94 + bool tmp = left;
1.95 + left = right;
1.96 + right = tmp;
1.97 + }
1.98 +
1.99 + if (left || right) {
1.100 + // We are a header. Look for the correct splitter.
1.101 + nsIFrame* child;
1.102 + if (left)
1.103 + child = mFrame->GetPrevSibling();
1.104 + else
1.105 + child = mFrame->GetNextSibling();
1.106 +
1.107 + if (child && child->GetContent()->NodeInfo()->Equals(nsGkAtoms::splitter,
1.108 + kNameSpaceID_XUL)) {
1.109 + aOutFrames->AppendElement(child);
1.110 + }
1.111 + }
1.112 +
1.113 +}
1.114 +
1.115 +void
1.116 +nsTreeColFrame::BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
1.117 + const nsRect& aDirtyRect,
1.118 + const nsDisplayListSet& aLists)
1.119 +{
1.120 + if (!aBuilder->IsForEventDelivery()) {
1.121 + nsBoxFrame::BuildDisplayListForChildren(aBuilder, aDirtyRect, aLists);
1.122 + return;
1.123 + }
1.124 +
1.125 + nsDisplayListCollection set;
1.126 + nsBoxFrame::BuildDisplayListForChildren(aBuilder, aDirtyRect, set);
1.127 +
1.128 + WrapListsInRedirector(aBuilder, set, aLists);
1.129 +
1.130 + aLists.Content()->AppendNewToTop(new (aBuilder)
1.131 + nsDisplayXULTreeColSplitterTarget(aBuilder, this));
1.132 +}
1.133 +
1.134 +nsresult
1.135 +nsTreeColFrame::AttributeChanged(int32_t aNameSpaceID,
1.136 + nsIAtom* aAttribute,
1.137 + int32_t aModType)
1.138 +{
1.139 + nsresult rv = nsBoxFrame::AttributeChanged(aNameSpaceID, aAttribute,
1.140 + aModType);
1.141 +
1.142 + if (aAttribute == nsGkAtoms::ordinal || aAttribute == nsGkAtoms::primary) {
1.143 + InvalidateColumns();
1.144 + }
1.145 +
1.146 + return rv;
1.147 +}
1.148 +
1.149 +void
1.150 +nsTreeColFrame::SetBounds(nsBoxLayoutState& aBoxLayoutState,
1.151 + const nsRect& aRect,
1.152 + bool aRemoveOverflowArea) {
1.153 + nscoord oldWidth = mRect.width;
1.154 +
1.155 + nsBoxFrame::SetBounds(aBoxLayoutState, aRect, aRemoveOverflowArea);
1.156 + if (mRect.width != oldWidth) {
1.157 + nsITreeBoxObject* treeBoxObject = GetTreeBoxObject();
1.158 + if (treeBoxObject) {
1.159 + treeBoxObject->Invalidate();
1.160 + }
1.161 + }
1.162 +}
1.163 +
1.164 +nsITreeBoxObject*
1.165 +nsTreeColFrame::GetTreeBoxObject()
1.166 +{
1.167 + nsITreeBoxObject* result = nullptr;
1.168 +
1.169 + nsIContent* parent = mContent->GetParent();
1.170 + if (parent) {
1.171 + nsIContent* grandParent = parent->GetParent();
1.172 + nsCOMPtr<nsIDOMXULElement> treeElement = do_QueryInterface(grandParent);
1.173 + if (treeElement) {
1.174 + nsCOMPtr<nsIBoxObject> boxObject;
1.175 + treeElement->GetBoxObject(getter_AddRefs(boxObject));
1.176 +
1.177 + nsCOMPtr<nsITreeBoxObject> treeBoxObject = do_QueryInterface(boxObject);
1.178 + result = treeBoxObject.get();
1.179 + }
1.180 + }
1.181 + return result;
1.182 +}
1.183 +
1.184 +void
1.185 +nsTreeColFrame::InvalidateColumns(bool aCanWalkFrameTree)
1.186 +{
1.187 + nsITreeBoxObject* treeBoxObject = GetTreeBoxObject();
1.188 + if (treeBoxObject) {
1.189 + nsCOMPtr<nsITreeColumns> columns;
1.190 +
1.191 + if (aCanWalkFrameTree) {
1.192 + treeBoxObject->GetColumns(getter_AddRefs(columns));
1.193 + } else {
1.194 + nsTreeBodyFrame* body = static_cast<nsTreeBoxObject*>(treeBoxObject)->GetCachedTreeBody();
1.195 + if (body) {
1.196 + columns = body->Columns();
1.197 + }
1.198 + }
1.199 +
1.200 + if (columns)
1.201 + columns->InvalidateColumns();
1.202 + }
1.203 +}
