michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "InterfaceInitFuncs.h"
michael@0: 
michael@0: #include "Accessible-inl.h"
michael@0: #include "HyperTextAccessible-inl.h"
michael@0: #include "nsMai.h"
michael@0: 
michael@0: #include "nsIAccessibleTypes.h"
michael@0: #include "nsIPersistentProperties2.h"
michael@0: #include "nsISimpleEnumerator.h"
michael@0: 
michael@0: #include "mozilla/Likely.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::a11y;
michael@0: 
michael@0: static const char* sAtkTextAttrNames[ATK_TEXT_ATTR_LAST_DEFINED];
michael@0: 
michael@0: static AtkAttributeSet*
michael@0: ConvertToAtkTextAttributeSet(nsIPersistentProperties* aAttributes)
michael@0: {
michael@0:   if (!aAttributes)
michael@0:     return nullptr;
michael@0: 
michael@0:   AtkAttributeSet* objAttributeSet = nullptr;
michael@0:   nsCOMPtr<nsISimpleEnumerator> propEnum;
michael@0:   nsresult rv = aAttributes->Enumerate(getter_AddRefs(propEnum));
michael@0:   NS_ENSURE_SUCCESS(rv, nullptr);
michael@0: 
michael@0:   bool hasMore = false;
michael@0:   while (NS_SUCCEEDED(propEnum->HasMoreElements(&hasMore)) && hasMore) {
michael@0:     nsCOMPtr<nsISupports> sup;
michael@0:     rv = propEnum->GetNext(getter_AddRefs(sup));
michael@0:     NS_ENSURE_SUCCESS(rv, objAttributeSet);
michael@0: 
michael@0:     nsCOMPtr<nsIPropertyElement> propElem(do_QueryInterface(sup));
michael@0:     NS_ENSURE_TRUE(propElem, objAttributeSet);
michael@0: 
michael@0:     nsAutoCString name;
michael@0:     rv = propElem->GetKey(name);
michael@0:     NS_ENSURE_SUCCESS(rv, objAttributeSet);
michael@0: 
michael@0:     nsAutoString value;
michael@0:     rv = propElem->GetValue(value);
michael@0:     NS_ENSURE_SUCCESS(rv, objAttributeSet);
michael@0: 
michael@0:     AtkAttribute* objAttr = (AtkAttribute*)g_malloc(sizeof(AtkAttribute));
michael@0:     objAttr->name = g_strdup(name.get());
michael@0:     objAttr->value = g_strdup(NS_ConvertUTF16toUTF8(value).get());
michael@0:     objAttributeSet = g_slist_prepend(objAttributeSet, objAttr);
michael@0: 
michael@0:     // Handle attributes where atk has its own name.
michael@0:     const char* atkName = nullptr;
michael@0:     nsAutoString atkValue;
michael@0:     if (name.EqualsLiteral("color")) {
michael@0:       // The format of the atk attribute is r,g,b and the gecko one is
michael@0:       // rgb(r,g,b).
michael@0:       atkValue = Substring(value, 5, value.Length() - 1);
michael@0:       atkName = sAtkTextAttrNames[ATK_TEXT_ATTR_FG_COLOR];
michael@0:     } else if (name.EqualsLiteral("background-color")) {
michael@0:       // The format of the atk attribute is r,g,b and the gecko one is
michael@0:       // rgb(r,g,b).
michael@0:       atkValue = Substring(value, 5, value.Length() - 1);
michael@0:       atkName = sAtkTextAttrNames[ATK_TEXT_ATTR_BG_COLOR];
michael@0:     } else if (name.EqualsLiteral("font-family")) {
michael@0:       atkValue = value;
michael@0:       atkName = sAtkTextAttrNames[ATK_TEXT_ATTR_FAMILY_NAME];
michael@0:     } else if (name.Equals("font-size")) {
michael@0:       // ATK wants the number of pixels without px at the end.
michael@0:       atkValue = StringHead(value, value.Length() - 2);
michael@0:       atkName = sAtkTextAttrNames[ATK_TEXT_ATTR_SIZE];
michael@0:     } else if (name.EqualsLiteral("font-weight")) {
michael@0:       atkValue = value;
michael@0:       atkName = sAtkTextAttrNames[ATK_TEXT_ATTR_WEIGHT];
michael@0:     } else if (name.EqualsLiteral("invalid")) {
michael@0:       atkValue = value;
michael@0:       atkName = sAtkTextAttrNames[ATK_TEXT_ATTR_INVALID];
michael@0:     }
michael@0: 
michael@0:     if (atkName) {
michael@0:       objAttr = static_cast<AtkAttribute*>(g_malloc(sizeof(AtkAttribute)));
michael@0:       objAttr->name = g_strdup(atkName);
michael@0:       objAttr->value = g_strdup(NS_ConvertUTF16toUTF8(atkValue).get());
michael@0:       objAttributeSet = g_slist_prepend(objAttributeSet, objAttr);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   // libatk-adaptor will free it
michael@0:   return objAttributeSet;
michael@0: }
michael@0: 
michael@0: static void
michael@0: ConvertTexttoAsterisks(AccessibleWrap* accWrap, nsAString& aString)
michael@0: {
michael@0:   // convert each char to "*" when it's "password text" 
michael@0:   if (accWrap->NativeRole() == roles::PASSWORD_TEXT) {
michael@0:     for (uint32_t i = 0; i < aString.Length(); i++)
michael@0:       aString.Replace(i, 1, NS_LITERAL_STRING("*"));
michael@0:   }
michael@0: }
michael@0: 
michael@0: extern "C" {
michael@0: 
michael@0: static gchar*
michael@0: getTextCB(AtkText *aText, gint aStartOffset, gint aEndOffset)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return nullptr;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return nullptr;
michael@0: 
michael@0:     nsAutoString autoStr;
michael@0:     text->TextSubstring(aStartOffset, aEndOffset, autoStr);
michael@0: 
michael@0:     ConvertTexttoAsterisks(accWrap, autoStr);
michael@0:     NS_ConvertUTF16toUTF8 cautoStr(autoStr);
michael@0: 
michael@0:     //copy and return, libspi will free it.
michael@0:     return (cautoStr.get()) ? g_strdup(cautoStr.get()) : nullptr;
michael@0: }
michael@0: 
michael@0: static gchar*
michael@0: getTextAfterOffsetCB(AtkText *aText, gint aOffset,
michael@0:                      AtkTextBoundary aBoundaryType,
michael@0:                      gint *aStartOffset, gint *aEndOffset)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return nullptr;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return nullptr;
michael@0: 
michael@0:   nsAutoString autoStr;
michael@0:   int32_t startOffset = 0, endOffset = 0;
michael@0:   text->TextAfterOffset(aOffset, aBoundaryType, &startOffset, &endOffset, autoStr);
michael@0: 
michael@0:   *aStartOffset = startOffset;
michael@0:   *aEndOffset = endOffset;
michael@0: 
michael@0:   ConvertTexttoAsterisks(accWrap, autoStr);
michael@0:   NS_ConvertUTF16toUTF8 cautoStr(autoStr);
michael@0:   return (cautoStr.get()) ? g_strdup(cautoStr.get()) : nullptr;
michael@0: }
michael@0: 
michael@0: static gchar*
michael@0: getTextAtOffsetCB(AtkText *aText, gint aOffset,
michael@0:                   AtkTextBoundary aBoundaryType,
michael@0:                   gint *aStartOffset, gint *aEndOffset)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return nullptr;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return nullptr;
michael@0: 
michael@0:     nsAutoString autoStr;
michael@0:     int32_t startOffset = 0, endOffset = 0;
michael@0:     text->TextAtOffset(aOffset, aBoundaryType, &startOffset, &endOffset, autoStr);
michael@0:     *aStartOffset = startOffset;
michael@0:     *aEndOffset = endOffset;
michael@0: 
michael@0:     ConvertTexttoAsterisks(accWrap, autoStr);
michael@0:     NS_ConvertUTF16toUTF8 cautoStr(autoStr);
michael@0:     return (cautoStr.get()) ? g_strdup(cautoStr.get()) : nullptr;
michael@0: }
michael@0: 
michael@0: static gunichar
michael@0: getCharacterAtOffsetCB(AtkText* aText, gint aOffset)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return 0;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return 0;
michael@0: 
michael@0:   // char16_t is unsigned short in Mozilla, gnuichar is guint32 in glib.
michael@0:   return static_cast<gunichar>(text->CharAt(aOffset));
michael@0: }
michael@0: 
michael@0: static gchar*
michael@0: getTextBeforeOffsetCB(AtkText *aText, gint aOffset,
michael@0:                       AtkTextBoundary aBoundaryType,
michael@0:                       gint *aStartOffset, gint *aEndOffset)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return nullptr;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return nullptr;
michael@0: 
michael@0:   nsAutoString autoStr;
michael@0:   int32_t startOffset = 0, endOffset = 0;
michael@0:   text->TextBeforeOffset(aOffset, aBoundaryType,
michael@0:                          &startOffset, &endOffset, autoStr);
michael@0:   *aStartOffset = startOffset;
michael@0:   *aEndOffset = endOffset;
michael@0: 
michael@0:   ConvertTexttoAsterisks(accWrap, autoStr);
michael@0:   NS_ConvertUTF16toUTF8 cautoStr(autoStr);
michael@0:   return (cautoStr.get()) ? g_strdup(cautoStr.get()) : nullptr;
michael@0: }
michael@0: 
michael@0: static gint
michael@0: getCaretOffsetCB(AtkText *aText)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return 0;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return 0;
michael@0: 
michael@0:   return static_cast<gint>(text->CaretOffset());
michael@0: }
michael@0: 
michael@0: static AtkAttributeSet*
michael@0: getRunAttributesCB(AtkText *aText, gint aOffset,
michael@0:                    gint *aStartOffset,
michael@0:                    gint *aEndOffset)
michael@0: {
michael@0:   *aStartOffset = -1;
michael@0:   *aEndOffset = -1;
michael@0: 
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return nullptr;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return nullptr;
michael@0: 
michael@0:   int32_t startOffset = 0, endOffset = 0;
michael@0:   nsCOMPtr<nsIPersistentProperties> attributes =
michael@0:     text->TextAttributes(false, aOffset, &startOffset, &endOffset);
michael@0: 
michael@0:   *aStartOffset = startOffset;
michael@0:   *aEndOffset = endOffset;
michael@0: 
michael@0:   return ConvertToAtkTextAttributeSet(attributes);
michael@0: }
michael@0: 
michael@0: static AtkAttributeSet*
michael@0: getDefaultAttributesCB(AtkText *aText)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return nullptr;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return nullptr;
michael@0: 
michael@0:   nsCOMPtr<nsIPersistentProperties> attributes = text->DefaultTextAttributes();
michael@0:   return ConvertToAtkTextAttributeSet(attributes);
michael@0: }
michael@0: 
michael@0: static void
michael@0: getCharacterExtentsCB(AtkText *aText, gint aOffset,
michael@0:                       gint *aX, gint *aY,
michael@0:                       gint *aWidth, gint *aHeight,
michael@0:                       AtkCoordType aCoords)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if(!accWrap || !aX || !aY || !aWidth || !aHeight)
michael@0:     return;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return;
michael@0: 
michael@0:     uint32_t geckoCoordType;
michael@0:     if (aCoords == ATK_XY_SCREEN)
michael@0:         geckoCoordType = nsIAccessibleCoordinateType::COORDTYPE_SCREEN_RELATIVE;
michael@0:     else
michael@0:         geckoCoordType = nsIAccessibleCoordinateType::COORDTYPE_WINDOW_RELATIVE;
michael@0: 
michael@0:   nsIntRect rect = text->CharBounds(aOffset, geckoCoordType);
michael@0:   *aX = rect.x;
michael@0:   *aY = rect.y;
michael@0:   *aWidth = rect.width;
michael@0:   *aHeight = rect.height;
michael@0: }
michael@0: 
michael@0: static void
michael@0: getRangeExtentsCB(AtkText *aText, gint aStartOffset, gint aEndOffset,
michael@0:                   AtkCoordType aCoords, AtkTextRectangle *aRect)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if(!accWrap || !aRect)
michael@0:     return;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return;
michael@0: 
michael@0:     uint32_t geckoCoordType;
michael@0:     if (aCoords == ATK_XY_SCREEN)
michael@0:         geckoCoordType = nsIAccessibleCoordinateType::COORDTYPE_SCREEN_RELATIVE;
michael@0:     else
michael@0:         geckoCoordType = nsIAccessibleCoordinateType::COORDTYPE_WINDOW_RELATIVE;
michael@0: 
michael@0:   nsIntRect rect = text->TextBounds(aStartOffset, aEndOffset, geckoCoordType);
michael@0:   aRect->x = rect.x;
michael@0:   aRect->y = rect.y;
michael@0:   aRect->width = rect.width;
michael@0:   aRect->height = rect.height;
michael@0: }
michael@0: 
michael@0: static gint
michael@0: getCharacterCountCB(AtkText *aText)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return 0;
michael@0: 
michael@0:   HyperTextAccessible* textAcc = accWrap->AsHyperText();
michael@0:   return textAcc->IsDefunct() ?
michael@0:     0 : static_cast<gint>(textAcc->CharacterCount());
michael@0: }
michael@0: 
michael@0: static gint
michael@0: getOffsetAtPointCB(AtkText *aText,
michael@0:                    gint aX, gint aY,
michael@0:                    AtkCoordType aCoords)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return -1;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return -1;
michael@0: 
michael@0:   return static_cast<gint>(
michael@0:     text->OffsetAtPoint(aX, aY,
michael@0:                         (aCoords == ATK_XY_SCREEN ?
michael@0:                          nsIAccessibleCoordinateType::COORDTYPE_SCREEN_RELATIVE :
michael@0:                          nsIAccessibleCoordinateType::COORDTYPE_WINDOW_RELATIVE)));
michael@0: }
michael@0: 
michael@0: static gint
michael@0: getTextSelectionCountCB(AtkText *aText)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return 0;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return 0;
michael@0: 
michael@0:   return text->SelectionCount();
michael@0: }
michael@0: 
michael@0: static gchar*
michael@0: getTextSelectionCB(AtkText *aText, gint aSelectionNum,
michael@0:                    gint *aStartOffset, gint *aEndOffset)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return nullptr;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return nullptr;
michael@0: 
michael@0:   int32_t startOffset = 0, endOffset = 0;
michael@0:   text->SelectionBoundsAt(aSelectionNum, &startOffset, &endOffset);
michael@0: 
michael@0:     *aStartOffset = startOffset;
michael@0:     *aEndOffset = endOffset;
michael@0: 
michael@0:     return getTextCB(aText, *aStartOffset, *aEndOffset);
michael@0: }
michael@0: 
michael@0: // set methods
michael@0: static gboolean
michael@0: addTextSelectionCB(AtkText *aText,
michael@0:                    gint aStartOffset,
michael@0:                    gint aEndOffset)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return FALSE;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return FALSE;
michael@0: 
michael@0:   return text->AddToSelection(aStartOffset, aEndOffset);
michael@0: }
michael@0: 
michael@0: static gboolean
michael@0: removeTextSelectionCB(AtkText *aText,
michael@0:                       gint aSelectionNum)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return FALSE;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return FALSE;
michael@0: 
michael@0:   return text->RemoveFromSelection(aSelectionNum);
michael@0: }
michael@0: 
michael@0: static gboolean
michael@0: setTextSelectionCB(AtkText *aText, gint aSelectionNum,
michael@0:                    gint aStartOffset, gint aEndOffset)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return FALSE;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole())
michael@0:     return FALSE;
michael@0: 
michael@0:   return text->SetSelectionBoundsAt(aSelectionNum, aStartOffset, aEndOffset);
michael@0: }
michael@0: 
michael@0: static gboolean
michael@0: setCaretOffsetCB(AtkText *aText, gint aOffset)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));
michael@0:   if (!accWrap)
michael@0:     return FALSE;
michael@0: 
michael@0:   HyperTextAccessible* text = accWrap->AsHyperText();
michael@0:   if (!text || !text->IsTextRole() || !text->IsValidOffset(aOffset))
michael@0:     return FALSE;
michael@0: 
michael@0:   text->SetCaretOffset(aOffset);
michael@0:   return TRUE;
michael@0: }
michael@0: }
michael@0: 
michael@0: void
michael@0: textInterfaceInitCB(AtkTextIface* aIface)
michael@0: {
michael@0:   NS_ASSERTION(aIface, "Invalid aIface");
michael@0:   if (MOZ_UNLIKELY(!aIface))
michael@0:     return;
michael@0: 
michael@0:   aIface->get_text = getTextCB;
michael@0:   aIface->get_text_after_offset = getTextAfterOffsetCB;
michael@0:   aIface->get_text_at_offset = getTextAtOffsetCB;
michael@0:   aIface->get_character_at_offset = getCharacterAtOffsetCB;
michael@0:   aIface->get_text_before_offset = getTextBeforeOffsetCB;
michael@0:   aIface->get_caret_offset = getCaretOffsetCB;
michael@0:   aIface->get_run_attributes = getRunAttributesCB;
michael@0:   aIface->get_default_attributes = getDefaultAttributesCB;
michael@0:   aIface->get_character_extents = getCharacterExtentsCB;
michael@0:   aIface->get_range_extents = getRangeExtentsCB;
michael@0:   aIface->get_character_count = getCharacterCountCB;
michael@0:   aIface->get_offset_at_point = getOffsetAtPointCB;
michael@0:   aIface->get_n_selections = getTextSelectionCountCB;
michael@0:   aIface->get_selection = getTextSelectionCB;
michael@0: 
michael@0:     // set methods
michael@0:   aIface->add_selection = addTextSelectionCB;
michael@0:   aIface->remove_selection = removeTextSelectionCB;
michael@0:   aIface->set_selection = setTextSelectionCB;
michael@0:   aIface->set_caret_offset = setCaretOffsetCB;
michael@0: 
michael@0:   // Cache the string values of the atk text attribute names.
michael@0:   for (uint32_t i = 0; i < ArrayLength(sAtkTextAttrNames); i++)
michael@0:     sAtkTextAttrNames[i] =
michael@0:       atk_text_attribute_get_name(static_cast<AtkTextAttribute>(i));
michael@0: }