gecko/browser/components/places/content/treeView.js

1698 lines
60 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
Components.utils.import('resource://gre/modules/XPCOMUtils.jsm');
const PTV_interfaces = [Ci.nsITreeView,
Ci.nsINavHistoryResultObserver,
Ci.nsINavHistoryResultTreeViewer,
Ci.nsISupportsWeakReference];
function PlacesTreeView(aFlatList, aOnOpenFlatContainer, aController) {
this._tree = null;
this._result = null;
this._selection = null;
this._rootNode = null;
this._rows = [];
this._flatList = aFlatList;
this._openContainerCallback = aOnOpenFlatContainer;
this._controller = aController;
}
PlacesTreeView.prototype = {
get wrappedJSObject() this,
__dateService: null,
get _dateService() {
if (!this.__dateService) {
this.__dateService = Cc["@mozilla.org/intl/scriptabledateformat;1"].
getService(Ci.nsIScriptableDateFormat);
}
return this.__dateService;
},
QueryInterface: XPCOMUtils.generateQI(PTV_interfaces),
// Bug 761494:
// ----------
// Some addons use methods from nsINavHistoryResultObserver and
// nsINavHistoryResultTreeViewer, without QIing to these interfaces first.
// That's not a problem when the view is retrieved through the
// <tree>.view getter (which returns the wrappedJSObject of this object),
// it raises an issue when the view retrieved through the treeBoxObject.view
// getter. Thus, to avoid breaking addons, the interfaces are prefetched.
classInfo: XPCOMUtils.generateCI({ interfaces: PTV_interfaces }),
/**
* This is called once both the result and the tree are set.
*/
_finishInit: function PTV__finishInit() {
let selection = this.selection;
if (selection)
selection.selectEventsSuppressed = true;
if (!this._rootNode.containerOpen) {
// This triggers containerStateChanged which then builds the visible
// section.
this._rootNode.containerOpen = true;
}
else
this.invalidateContainer(this._rootNode);
// "Activate" the sorting column and update commands.
this.sortingChanged(this._result.sortingMode);
if (selection)
selection.selectEventsSuppressed = false;
},
/**
* Plain Container: container result nodes which may never include sub
* hierarchies.
*
* When the rows array is constructed, we don't set the children of plain
* containers. Instead, we keep placeholders for these children. We then
* build these children lazily as the tree asks us for information about each
* row. Luckily, the tree doesn't ask about rows outside the visible area.
*
* @see _getNodeForRow and _getRowForNode for the actual magic.
*
* @note It's guaranteed that all containers are listed in the rows
* elements array. It's also guaranteed that separators (if they're not
* filtered, see below) are listed in the visible elements array, because
* bookmark folders are never built lazily, as described above.
*
* @param aContainer
* A container result node.
*
* @return true if aContainer is a plain container, false otherwise.
*/
_isPlainContainer: function PTV__isPlainContainer(aContainer) {
// Livemarks are always plain containers.
if (this._controller.hasCachedLivemarkInfo(aContainer))
return true;
// We don't know enough about non-query containers.
if (!(aContainer instanceof Ci.nsINavHistoryQueryResultNode))
return false;
switch (aContainer.queryOptions.resultType) {
case Ci.nsINavHistoryQueryOptions.RESULTS_AS_DATE_QUERY:
case Ci.nsINavHistoryQueryOptions.RESULTS_AS_SITE_QUERY:
case Ci.nsINavHistoryQueryOptions.RESULTS_AS_DATE_SITE_QUERY:
case Ci.nsINavHistoryQueryOptions.RESULTS_AS_TAG_QUERY:
return false;
}
// If it's a folder, it's not a plain container.
let nodeType = aContainer.type;
return nodeType != Ci.nsINavHistoryResultNode.RESULT_TYPE_FOLDER &&
nodeType != Ci.nsINavHistoryResultNode.RESULT_TYPE_FOLDER_SHORTCUT;
},
/**
* Gets the row number for a given node. Assumes that the given node is
* visible (i.e. it's not an obsolete node).
*
* @param aNode
* A result node. Do not pass an obsolete node, or any
* node which isn't supposed to be in the tree (e.g. separators in
* sorted trees).
* @param [optional] aForceBuild
* @see _isPlainContainer.
* If true, the row will be computed even if the node still isn't set
* in our rows array.
* @param [optional] aParentRow
* The row of aNode's parent. Ignored for the root node.
* @param [optional] aNodeIndex
* The index of aNode in its parent. Only used if aParentRow is
* set too.
*
* @throws if aNode is invisible.
* @note If aParentRow and aNodeIndex are passed and parent is a plain
* container, this method will just return a calculated row value, without
* making assumptions on existence of the node at that position.
* @return aNode's row if it's in the rows list or if aForceBuild is set, -1
* otherwise.
*/
_getRowForNode:
function PTV__getRowForNode(aNode, aForceBuild, aParentRow, aNodeIndex) {
if (aNode == this._rootNode)
throw new Error("The root node is never visible");
// A node is removed form the view either if it has no parent or if its
// root-ancestor is not the root node (in which case that's the node
// for which nodeRemoved was called).
let ancestors = [x for each (x in PlacesUtils.nodeAncestors(aNode))];
if (ancestors.length == 0 ||
ancestors[ancestors.length - 1] != this._rootNode) {
throw new Error("Removed node passed to _getRowForNode");
}
// Ensure that the entire chain is open, otherwise that node is invisible.
for (let ancestor of ancestors) {
if (!ancestor.containerOpen)
throw new Error("Invisible node passed to _getRowForNode");
}
// Non-plain containers are initially built with their contents.
let parent = aNode.parent;
let parentIsPlain = this._isPlainContainer(parent);
if (!parentIsPlain) {
if (parent == this._rootNode)
return this._rows.indexOf(aNode);
return this._rows.indexOf(aNode, aParentRow);
}
let row = -1;
let useNodeIndex = typeof(aNodeIndex) == "number";
if (parent == this._rootNode)
row = useNodeIndex ? aNodeIndex : this._rootNode.getChildIndex(aNode);
else if (useNodeIndex && typeof(aParentRow) == "number") {
// If we have both the row of the parent node, and the node's index, we
// can avoid searching the rows array if the parent is a plain container.
row = aParentRow + aNodeIndex + 1;
}
else {
// Look for the node in the nodes array. Start the search at the parent
// row. If the parent row isn't passed, we'll pass undefined to indexOf,
// which is fine.
row = this._rows.indexOf(aNode, aParentRow);
if (row == -1 && aForceBuild) {
let parentRow = typeof(aParentRow) == "number" ? aParentRow
: this._getRowForNode(parent);
row = parentRow + parent.getChildIndex(aNode) + 1;
}
}
if (row != -1)
this._rows[row] = aNode;
return row;
},
/**
* Given a row, finds and returns the parent details of the associated node.
*
* @param aChildRow
* Row number.
* @return [parentNode, parentRow]
*/
_getParentByChildRow: function PTV__getParentByChildRow(aChildRow) {
let node = this._getNodeForRow(aChildRow);
let parent = (node === null) ? this._rootNode : node.parent;
// The root node is never visible
if (parent == this._rootNode)
return [this._rootNode, -1];
let parentRow = this._rows.lastIndexOf(parent, aChildRow - 1);
return [parent, parentRow];
},
/**
* Gets the node at a given row.
*/
_getNodeForRow: function PTV__getNodeForRow(aRow) {
if (aRow < 0) {
return null;
}
let node = this._rows[aRow];
if (node !== undefined)
return node;
// Find the nearest node.
let rowNode, row;
for (let i = aRow - 1; i >= 0 && rowNode === undefined; i--) {
rowNode = this._rows[i];
row = i;
}
// If there's no container prior to the given row, it's a child of
// the root node (remember: all containers are listed in the rows array).
if (!rowNode)
return this._rows[aRow] = this._rootNode.getChild(aRow);
// Unset elements may exist only in plain containers. Thus, if the nearest
// node is a container, it's the row's parent, otherwise, it's a sibling.
if (rowNode instanceof Ci.nsINavHistoryContainerResultNode)
return this._rows[aRow] = rowNode.getChild(aRow - row - 1);
let [parent, parentRow] = this._getParentByChildRow(row);
return this._rows[aRow] = parent.getChild(aRow - parentRow - 1);
},
/**
* This takes a container and recursively appends our rows array per its
* contents. Assumes that the rows arrays has no rows for the given
* container.
*
* @param [in] aContainer
* A container result node.
* @param [in] aFirstChildRow
* The first row at which nodes may be inserted to the row array.
* In other words, that's aContainer's row + 1.
* @param [out] aToOpen
* An array of containers to open once the build is done.
*
* @return the number of rows which were inserted.
*/
_buildVisibleSection:
function PTV__buildVisibleSection(aContainer, aFirstChildRow, aToOpen)
{
// There's nothing to do if the container is closed.
if (!aContainer.containerOpen)
return 0;
// Inserting the new elements into the rows array in one shot (by
// Array.concat) is faster than resizing the array (by splice) on each loop
// iteration.
let cc = aContainer.childCount;
let newElements = new Array(cc);
this._rows = this._rows.splice(0, aFirstChildRow)
.concat(newElements, this._rows);
if (this._isPlainContainer(aContainer))
return cc;
const openLiteral = PlacesUIUtils.RDF.GetResource("http://home.netscape.com/NC-rdf#open");
const trueLiteral = PlacesUIUtils.RDF.GetLiteral("true");
let sortingMode = this._result.sortingMode;
let rowsInserted = 0;
for (let i = 0; i < cc; i++) {
let curChild = aContainer.getChild(i);
let curChildType = curChild.type;
let row = aFirstChildRow + rowsInserted;
// Don't display separators when sorted.
if (curChildType == Ci.nsINavHistoryResultNode.RESULT_TYPE_SEPARATOR) {
if (sortingMode != Ci.nsINavHistoryQueryOptions.SORT_BY_NONE) {
// Remove the element for the filtered separator.
// Notice that the rows array was initially resized to include all
// children.
this._rows.splice(row, 1);
continue;
}
}
this._rows[row] = curChild;
rowsInserted++;
// Recursively do containers.
if (!this._flatList &&
curChild instanceof Ci.nsINavHistoryContainerResultNode &&
!this._controller.hasCachedLivemarkInfo(curChild)) {
let resource = this._getResourceForNode(curChild);
let isopen = resource != null &&
PlacesUIUtils.localStore.HasAssertion(resource,
openLiteral,
trueLiteral, true);
if (isopen != curChild.containerOpen)
aToOpen.push(curChild);
else if (curChild.containerOpen && curChild.childCount > 0)
rowsInserted += this._buildVisibleSection(curChild, row + 1, aToOpen);
}
}
return rowsInserted;
},
/**
* This counts how many rows a node takes in the tree. For containers it
* will count the node itself plus any child node following it.
*/
_countVisibleRowsForNodeAtRow:
function PTV__countVisibleRowsForNodeAtRow(aNodeRow) {
let node = this._rows[aNodeRow];
// If it's not listed yet, we know that it's a leaf node (instanceof also
// null-checks).
if (!(node instanceof Ci.nsINavHistoryContainerResultNode))
return 1;
let outerLevel = node.indentLevel;
for (let i = aNodeRow + 1; i < this._rows.length; i++) {
let rowNode = this._rows[i];
if (rowNode && rowNode.indentLevel <= outerLevel)
return i - aNodeRow;
}
// This node plus its children take up the bottom of the list.
return this._rows.length - aNodeRow;
},
_getSelectedNodesInRange:
function PTV__getSelectedNodesInRange(aFirstRow, aLastRow) {
let selection = this.selection;
let rc = selection.getRangeCount();
if (rc == 0)
return [];
// The visible-area borders are needed for checking whether a
// selected row is also visible.
let firstVisibleRow = this._tree.getFirstVisibleRow();
let lastVisibleRow = this._tree.getLastVisibleRow();
let nodesInfo = [];
for (let rangeIndex = 0; rangeIndex < rc; rangeIndex++) {
let min = { }, max = { };
selection.getRangeAt(rangeIndex, min, max);
// If this range does not overlap the replaced chunk, we don't need to
// persist the selection.
if (max.value < aFirstRow || min.value > aLastRow)
continue;
let firstRow = Math.max(min.value, aFirstRow);
let lastRow = Math.min(max.value, aLastRow);
for (let i = firstRow; i <= lastRow; i++) {
nodesInfo.push({
node: this._rows[i],
oldRow: i,
wasVisible: i >= firstVisibleRow && i <= lastVisibleRow
});
}
}
return nodesInfo;
},
/**
* Tries to find an equivalent node for a node which was removed. We first
* look for the original node, in case it was just relocated. Then, if we
* that node was not found, we look for a node that has the same itemId, uri
* and time values.
*
* @param aUpdatedContainer
* An ancestor of the node which was removed. It does not have to be
* its direct parent.
* @param aOldNode
* The node which was removed.
*
* @return the row number of an equivalent node for aOldOne, if one was
* found, -1 otherwise.
*/
_getNewRowForRemovedNode:
function PTV__getNewRowForRemovedNode(aUpdatedContainer, aOldNode) {
let parent = aOldNode.parent;
if (parent) {
// If the node's parent is still set, the node is not obsolete
// and we should just find out its new position.
// However, if any of the node's ancestor is closed, the node is
// invisible.
let ancestors = PlacesUtils.nodeAncestors(aOldNode);
for (let ancestor in ancestors) {
if (!ancestor.containerOpen)
return -1;
}
return this._getRowForNode(aOldNode, true);
}
// There's a broken edge case here.
// If a visit appears in two queries, and the second one was
// the old node, we'll select the first one after refresh. There's
// nothing we could do about that, because aOldNode.parent is
// gone by the time invalidateContainer is called.
let newNode = aUpdatedContainer.findNodeByDetails(aOldNode.uri,
aOldNode.time,
aOldNode.itemId,
true);
if (!newNode)
return -1;
return this._getRowForNode(newNode, true);
},
/**
* Restores a given selection state as near as possible to the original
* selection state.
*
* @param aNodesInfo
* The persisted selection state as returned by
* _getSelectedNodesInRange.
* @param aUpdatedContainer
* The container which was updated.
*/
_restoreSelection:
function PTV__restoreSelection(aNodesInfo, aUpdatedContainer) {
if (aNodesInfo.length == 0)
return;
let selection = this.selection;
// Attempt to ensure that previously-visible selection will be visible
// if it's re-selected. However, we can only ensure that for one row.
let scrollToRow = -1;
for (let i = 0; i < aNodesInfo.length; i++) {
let nodeInfo = aNodesInfo[i];
let row = this._getNewRowForRemovedNode(aUpdatedContainer,
aNodesInfo[i].node);
// Select the found node, if any.
if (row != -1) {
selection.rangedSelect(row, row, true);
if (nodeInfo.wasVisible && scrollToRow == -1)
scrollToRow = row;
}
}
// If only one node was previously selected and there's no selection now,
// select the node at its old row, if any.
if (aNodesInfo.length == 1 && selection.count == 0) {
let row = Math.min(aNodesInfo[0].oldRow, this._rows.length - 1);
selection.rangedSelect(row, row, true);
if (aNodesInfo[0].wasVisible && scrollToRow == -1)
scrollToRow = aNodesInfo[0].oldRow;
}
if (scrollToRow != -1)
this._tree.ensureRowIsVisible(scrollToRow);
},
_convertPRTimeToString: function PTV__convertPRTimeToString(aTime) {
const MS_PER_MINUTE = 60000;
const MS_PER_DAY = 86400000;
let timeMs = aTime / 1000; // PRTime is in microseconds
// Date is calculated starting from midnight, so the modulo with a day are
// milliseconds from today's midnight.
// getTimezoneOffset corrects that based on local time, notice midnight
// can have a different offset during DST-change days.
let dateObj = new Date();
let now = dateObj.getTime() - dateObj.getTimezoneOffset() * MS_PER_MINUTE;
let midnight = now - (now % MS_PER_DAY);
midnight += new Date(midnight).getTimezoneOffset() * MS_PER_MINUTE;
let dateFormat = timeMs >= midnight ?
Ci.nsIScriptableDateFormat.dateFormatNone :
Ci.nsIScriptableDateFormat.dateFormatShort;
let timeObj = new Date(timeMs);
return (this._dateService.FormatDateTime("", dateFormat,
Ci.nsIScriptableDateFormat.timeFormatNoSeconds,
timeObj.getFullYear(), timeObj.getMonth() + 1,
timeObj.getDate(), timeObj.getHours(),
timeObj.getMinutes(), timeObj.getSeconds()));
},
COLUMN_TYPE_UNKNOWN: 0,
COLUMN_TYPE_TITLE: 1,
COLUMN_TYPE_URI: 2,
COLUMN_TYPE_DATE: 3,
COLUMN_TYPE_VISITCOUNT: 4,
COLUMN_TYPE_KEYWORD: 5,
COLUMN_TYPE_DESCRIPTION: 6,
COLUMN_TYPE_DATEADDED: 7,
COLUMN_TYPE_LASTMODIFIED: 8,
COLUMN_TYPE_TAGS: 9,
_getColumnType: function PTV__getColumnType(aColumn) {
let columnType = aColumn.element.getAttribute("anonid") || aColumn.id;
switch (columnType) {
case "title":
return this.COLUMN_TYPE_TITLE;
case "url":
return this.COLUMN_TYPE_URI;
case "date":
return this.COLUMN_TYPE_DATE;
case "visitCount":
return this.COLUMN_TYPE_VISITCOUNT;
case "keyword":
return this.COLUMN_TYPE_KEYWORD;
case "description":
return this.COLUMN_TYPE_DESCRIPTION;
case "dateAdded":
return this.COLUMN_TYPE_DATEADDED;
case "lastModified":
return this.COLUMN_TYPE_LASTMODIFIED;
case "tags":
return this.COLUMN_TYPE_TAGS;
}
return this.COLUMN_TYPE_UNKNOWN;
},
_sortTypeToColumnType: function PTV__sortTypeToColumnType(aSortType) {
switch (aSortType) {
case Ci.nsINavHistoryQueryOptions.SORT_BY_TITLE_ASCENDING:
return [this.COLUMN_TYPE_TITLE, false];
case Ci.nsINavHistoryQueryOptions.SORT_BY_TITLE_DESCENDING:
return [this.COLUMN_TYPE_TITLE, true];
case Ci.nsINavHistoryQueryOptions.SORT_BY_DATE_ASCENDING:
return [this.COLUMN_TYPE_DATE, false];
case Ci.nsINavHistoryQueryOptions.SORT_BY_DATE_DESCENDING:
return [this.COLUMN_TYPE_DATE, true];
case Ci.nsINavHistoryQueryOptions.SORT_BY_URI_ASCENDING:
return [this.COLUMN_TYPE_URI, false];
case Ci.nsINavHistoryQueryOptions.SORT_BY_URI_DESCENDING:
return [this.COLUMN_TYPE_URI, true];
case Ci.nsINavHistoryQueryOptions.SORT_BY_VISITCOUNT_ASCENDING:
return [this.COLUMN_TYPE_VISITCOUNT, false];
case Ci.nsINavHistoryQueryOptions.SORT_BY_VISITCOUNT_DESCENDING:
return [this.COLUMN_TYPE_VISITCOUNT, true];
case Ci.nsINavHistoryQueryOptions.SORT_BY_KEYWORD_ASCENDING:
return [this.COLUMN_TYPE_KEYWORD, false];
case Ci.nsINavHistoryQueryOptions.SORT_BY_KEYWORD_DESCENDING:
return [this.COLUMN_TYPE_KEYWORD, true];
case Ci.nsINavHistoryQueryOptions.SORT_BY_ANNOTATION_ASCENDING:
if (this._result.sortingAnnotation == PlacesUIUtils.DESCRIPTION_ANNO)
return [this.COLUMN_TYPE_DESCRIPTION, false];
break;
case Ci.nsINavHistoryQueryOptions.SORT_BY_ANNOTATION_DESCENDING:
if (this._result.sortingAnnotation == PlacesUIUtils.DESCRIPTION_ANNO)
return [this.COLUMN_TYPE_DESCRIPTION, true];
case Ci.nsINavHistoryQueryOptions.SORT_BY_DATEADDED_ASCENDING:
return [this.COLUMN_TYPE_DATEADDED, false];
case Ci.nsINavHistoryQueryOptions.SORT_BY_DATEADDED_DESCENDING:
return [this.COLUMN_TYPE_DATEADDED, true];
case Ci.nsINavHistoryQueryOptions.SORT_BY_LASTMODIFIED_ASCENDING:
return [this.COLUMN_TYPE_LASTMODIFIED, false];
case Ci.nsINavHistoryQueryOptions.SORT_BY_LASTMODIFIED_DESCENDING:
return [this.COLUMN_TYPE_LASTMODIFIED, true];
case Ci.nsINavHistoryQueryOptions.SORT_BY_TAGS_ASCENDING:
return [this.COLUMN_TYPE_TAGS, false];
case Ci.nsINavHistoryQueryOptions.SORT_BY_TAGS_DESCENDING:
return [this.COLUMN_TYPE_TAGS, true];
}
return [this.COLUMN_TYPE_UNKNOWN, false];
},
// nsINavHistoryResultObserver
nodeInserted: function PTV_nodeInserted(aParentNode, aNode, aNewIndex) {
NS_ASSERT(this._result, "Got a notification but have no result!");
if (!this._tree || !this._result)
return;
// Bail out for hidden separators.
if (PlacesUtils.nodeIsSeparator(aNode) && this.isSorted())
return;
let parentRow;
if (aParentNode != this._rootNode) {
parentRow = this._getRowForNode(aParentNode);
// Update parent when inserting the first item, since twisty has changed.
if (aParentNode.childCount == 1)
this._tree.invalidateRow(parentRow);
}
// Compute the new row number of the node.
let row = -1;
let cc = aParentNode.childCount;
if (aNewIndex == 0 || this._isPlainContainer(aParentNode) || cc == 0) {
// We don't need to worry about sub hierarchies of the parent node
// if it's a plain container, or if the new node is its first child.
if (aParentNode == this._rootNode)
row = aNewIndex;
else
row = parentRow + aNewIndex + 1;
}
else {
// Here, we try to find the next visible element in the child list so we
// can set the new visible index to be right before that. Note that we
// have to search down instead of up, because some siblings could have
// children themselves that would be in the way.
let separatorsAreHidden = PlacesUtils.nodeIsSeparator(aNode) &&
this.isSorted();
for (let i = aNewIndex + 1; i < cc; i++) {
let node = aParentNode.getChild(i);
if (!separatorsAreHidden || PlacesUtils.nodeIsSeparator(node)) {
// The children have not been shifted so the next item will have what
// should be our index.
row = this._getRowForNode(node, false, parentRow, i);
break;
}
}
if (row < 0) {
// At the end of the child list without finding a visible sibling. This
// is a little harder because we don't know how many rows the last item
// in our list takes up (it could be a container with many children).
let prevChild = aParentNode.getChild(aNewIndex - 1);
let prevIndex = this._getRowForNode(prevChild, false, parentRow,
aNewIndex - 1);
row = prevIndex + this._countVisibleRowsForNodeAtRow(prevIndex);
}
}
this._rows.splice(row, 0, aNode);
this._tree.rowCountChanged(row, 1);
if (PlacesUtils.nodeIsContainer(aNode) &&
PlacesUtils.asContainer(aNode).containerOpen) {
this.invalidateContainer(aNode);
}
},
/**
* THIS FUNCTION DOES NOT HANDLE cases where a collapsed node is being
* removed but the node it is collapsed with is not being removed (this then
* just swap out the removee with its collapsing partner). The only time
* when we really remove things is when deleting URIs, which will apply to
* all collapsees. This function is called sometimes when resorting items.
* However, we won't do this when sorted by date because dates will never
* change for visits, and date sorting is the only time things are collapsed.
*/
nodeRemoved: function PTV_nodeRemoved(aParentNode, aNode, aOldIndex) {
NS_ASSERT(this._result, "Got a notification but have no result!");
if (!this._tree || !this._result)
return;
// XXX bug 517701: We don't know what to do when the root node is removed.
if (aNode == this._rootNode)
throw Cr.NS_ERROR_NOT_IMPLEMENTED;
// Bail out for hidden separators.
if (PlacesUtils.nodeIsSeparator(aNode) && this.isSorted())
return;
let parentRow = aParentNode == this._rootNode ?
undefined : this._getRowForNode(aParentNode, true);
let oldRow = this._getRowForNode(aNode, true, parentRow, aOldIndex);
if (oldRow < 0)
throw Cr.NS_ERROR_UNEXPECTED;
// If the node was exclusively selected, the node next to it will be
// selected.
let selectNext = false;
let selection = this.selection;
if (selection.getRangeCount() == 1) {
let min = { }, max = { };
selection.getRangeAt(0, min, max);
if (min.value == max.value &&
this.nodeForTreeIndex(min.value) == aNode)
selectNext = true;
}
// Remove the node and its children, if any.
let count = this._countVisibleRowsForNodeAtRow(oldRow);
this._rows.splice(oldRow, count);
this._tree.rowCountChanged(oldRow, -count);
// Redraw the parent if its twisty state has changed.
if (aParentNode != this._rootNode && !aParentNode.hasChildren) {
let parentRow = oldRow - 1;
this._tree.invalidateRow(parentRow);
}
// Restore selection if the node was exclusively selected.
if (!selectNext)
return;
// Restore selection.
let rowToSelect = Math.min(oldRow, this._rows.length - 1);
this.selection.rangedSelect(rowToSelect, rowToSelect, true);
},
nodeMoved:
function PTV_nodeMoved(aNode, aOldParent, aOldIndex, aNewParent, aNewIndex) {
NS_ASSERT(this._result, "Got a notification but have no result!");
if (!this._tree || !this._result)
return;
// Bail out for hidden separators.
if (PlacesUtils.nodeIsSeparator(aNode) && this.isSorted())
return;
// Note that at this point the node has already been moved by the backend,
// so we must give hints to _getRowForNode to get the old row position.
let oldParentRow = aOldParent == this._rootNode ?
undefined : this._getRowForNode(aOldParent, true);
let oldRow = this._getRowForNode(aNode, true, oldParentRow, aOldIndex);
if (oldRow < 0)
throw Cr.NS_ERROR_UNEXPECTED;
// If this node is a container it could take up more than one row.
let count = this._countVisibleRowsForNodeAtRow(oldRow);
// Persist selection state.
let nodesToReselect =
this._getSelectedNodesInRange(oldRow, oldRow + count);
if (nodesToReselect.length > 0)
this.selection.selectEventsSuppressed = true;
// Redraw the parent if its twisty state has changed.
if (aOldParent != this._rootNode && !aOldParent.hasChildren) {
let parentRow = oldRow - 1;
this._tree.invalidateRow(parentRow);
}
// Remove node and its children, if any, from the old position.
this._rows.splice(oldRow, count);
this._tree.rowCountChanged(oldRow, -count);
// Insert the node into the new position.
this.nodeInserted(aNewParent, aNode, aNewIndex);
// Restore selection.
if (nodesToReselect.length > 0) {
this._restoreSelection(nodesToReselect, aNewParent);
this.selection.selectEventsSuppressed = false;
}
},
_invalidateCellValue: function PTV__invalidateCellValue(aNode,
aColumnType) {
NS_ASSERT(this._result, "Got a notification but have no result!");
if (!this._tree || !this._result)
return;
// Nothing to do for the root node.
if (aNode == this._rootNode)
return;
let row = this._getRowForNode(aNode);
if (row == -1)
return;
let column = this._findColumnByType(aColumnType);
if (column && !column.element.hidden)
this._tree.invalidateCell(row, column);
// Last modified time is altered for almost all node changes.
if (aColumnType != this.COLUMN_TYPE_LASTMODIFIED) {
let lastModifiedColumn =
this._findColumnByType(this.COLUMN_TYPE_LASTMODIFIED);
if (lastModifiedColumn && !lastModifiedColumn.hidden)
this._tree.invalidateCell(row, lastModifiedColumn);
}
},
_populateLivemarkContainer: function PTV__populateLivemarkContainer(aNode) {
PlacesUtils.livemarks.getLivemark({ id: aNode.itemId },
function (aStatus, aLivemark) {
let placesNode = aNode;
// Need to check containerOpen since getLivemark is async.
if (!Components.isSuccessCode(aStatus) || !placesNode.containerOpen)
return;
let children = aLivemark.getNodesForContainer(placesNode);
for (let i = 0; i < children.length; i++) {
let child = children[i];
this.nodeInserted(placesNode, child, i);
}
}.bind(this));
},
nodeTitleChanged: function PTV_nodeTitleChanged(aNode, aNewTitle) {
this._invalidateCellValue(aNode, this.COLUMN_TYPE_TITLE);
},
nodeURIChanged: function PTV_nodeURIChanged(aNode, aNewURI) {
this._invalidateCellValue(aNode, this.COLUMN_TYPE_URI);
},
nodeIconChanged: function PTV_nodeIconChanged(aNode) {
this._invalidateCellValue(aNode, this.COLUMN_TYPE_TITLE);
},
nodeHistoryDetailsChanged:
function PTV_nodeHistoryDetailsChanged(aNode, aUpdatedVisitDate,
aUpdatedVisitCount) {
if (aNode.parent && this._controller.hasCachedLivemarkInfo(aNode.parent)) {
// Find the node in the parent.
let parentRow = this._flatList ? 0 : this._getRowForNode(aNode.parent);
for (let i = parentRow; i < this._rows.length; i++) {
let child = this.nodeForTreeIndex(i);
if (child.uri == aNode.uri) {
this._cellProperties.delete(child);
this._invalidateCellValue(child, this.COLUMN_TYPE_TITLE);
break;
}
}
return;
}
this._invalidateCellValue(aNode, this.COLUMN_TYPE_DATE);
this._invalidateCellValue(aNode, this.COLUMN_TYPE_VISITCOUNT);
},
nodeTagsChanged: function PTV_nodeTagsChanged(aNode) {
this._invalidateCellValue(aNode, this.COLUMN_TYPE_TAGS);
},
nodeKeywordChanged: function PTV_nodeKeywordChanged(aNode, aNewKeyword) {
this._invalidateCellValue(aNode, this.COLUMN_TYPE_KEYWORD);
},
nodeAnnotationChanged: function PTV_nodeAnnotationChanged(aNode, aAnno) {
if (aAnno == PlacesUIUtils.DESCRIPTION_ANNO) {
this._invalidateCellValue(aNode, this.COLUMN_TYPE_DESCRIPTION);
}
else if (aAnno == PlacesUtils.LMANNO_FEEDURI) {
PlacesUtils.livemarks.getLivemark(
{ id: aNode.itemId },
function (aStatus, aLivemark) {
if (Components.isSuccessCode(aStatus)) {
this._controller.cacheLivemarkInfo(aNode, aLivemark);
let properties = this._cellProperties.get(aNode);
this._cellProperties.set(aNode, properties += " livemark ");
// The livemark attribute is set as a cell property on the title cell.
this._invalidateCellValue(aNode, this.COLUMN_TYPE_TITLE);
}
}.bind(this)
);
}
},
nodeDateAddedChanged: function PTV_nodeDateAddedChanged(aNode, aNewValue) {
this._invalidateCellValue(aNode, this.COLUMN_TYPE_DATEADDED);
},
nodeLastModifiedChanged:
function PTV_nodeLastModifiedChanged(aNode, aNewValue) {
this._invalidateCellValue(aNode, this.COLUMN_TYPE_LASTMODIFIED);
},
containerStateChanged:
function PTV_containerStateChanged(aNode, aOldState, aNewState) {
this.invalidateContainer(aNode);
if (PlacesUtils.nodeIsFolder(aNode) ||
(this._flatList && aNode == this._rootNode)) {
let queryOptions = PlacesUtils.asQuery(this._rootNode).queryOptions;
if (queryOptions.excludeItems) {
return;
}
PlacesUtils.livemarks.getLivemark({ id: aNode.itemId },
function (aStatus, aLivemark) {
if (Components.isSuccessCode(aStatus)) {
let shouldInvalidate =
!this._controller.hasCachedLivemarkInfo(aNode);
this._controller.cacheLivemarkInfo(aNode, aLivemark);
if (aNewState == Components.interfaces.nsINavHistoryContainerResultNode.STATE_OPENED) {
aLivemark.registerForUpdates(aNode, this);
// Prioritize the current livemark.
aLivemark.reload();
PlacesUtils.livemarks.reloadLivemarks();
if (shouldInvalidate)
this.invalidateContainer(aNode);
}
else {
aLivemark.unregisterForUpdates(aNode);
}
}
}.bind(this)
);
}
},
invalidateContainer: function PTV_invalidateContainer(aContainer) {
NS_ASSERT(this._result, "Need to have a result to update");
if (!this._tree)
return;
let startReplacement, replaceCount;
if (aContainer == this._rootNode) {
startReplacement = 0;
replaceCount = this._rows.length;
// If the root node is now closed, the tree is empty.
if (!this._rootNode.containerOpen) {
this._rows = [];
if (replaceCount)
this._tree.rowCountChanged(startReplacement, -replaceCount);
return;
}
}
else {
// Update the twisty state.
let row = this._getRowForNode(aContainer);
this._tree.invalidateRow(row);
// We don't replace the container node itself, so we should decrease the
// replaceCount by 1.
startReplacement = row + 1;
replaceCount = this._countVisibleRowsForNodeAtRow(row) - 1;
}
// Persist selection state.
let nodesToReselect =
this._getSelectedNodesInRange(startReplacement,
startReplacement + replaceCount);
// Now update the number of elements.
this.selection.selectEventsSuppressed = true;
// First remove the old elements
this._rows.splice(startReplacement, replaceCount);
// If the container is now closed, we're done.
if (!aContainer.containerOpen) {
let oldSelectionCount = this.selection.count;
if (replaceCount)
this._tree.rowCountChanged(startReplacement, -replaceCount);
// Select the row next to the closed container if any of its
// children were selected, and nothing else is selected.
if (nodesToReselect.length > 0 &&
nodesToReselect.length == oldSelectionCount) {
this.selection.rangedSelect(startReplacement, startReplacement, true);
this._tree.ensureRowIsVisible(startReplacement);
}
this.selection.selectEventsSuppressed = false;
return;
}
// Otherwise, start a batch first.
this._tree.beginUpdateBatch();
if (replaceCount)
this._tree.rowCountChanged(startReplacement, -replaceCount);
let toOpenElements = [];
let elementsAddedCount = this._buildVisibleSection(aContainer,
startReplacement,
toOpenElements);
if (elementsAddedCount)
this._tree.rowCountChanged(startReplacement, elementsAddedCount);
if (!this._flatList) {
// Now, open any containers that were persisted.
for (let i = 0; i < toOpenElements.length; i++) {
let item = toOpenElements[i];
let parent = item.parent;
// Avoid recursively opening containers.
while (parent) {
if (parent.uri == item.uri)
break;
parent = parent.parent;
}
// If we don't have a parent, we made it all the way to the root
// and didn't find a match, so we can open our item.
if (!parent && !item.containerOpen)
item.containerOpen = true;
}
}
if (this._controller.hasCachedLivemarkInfo(aContainer)) {
let queryOptions = PlacesUtils.asQuery(this._result.root).queryOptions;
if (!queryOptions.excludeItems) {
this._populateLivemarkContainer(aContainer);
}
}
this._tree.endUpdateBatch();
// Restore selection.
this._restoreSelection(nodesToReselect, aContainer);
this.selection.selectEventsSuppressed = false;
},
_columns: [],
_findColumnByType: function PTV__findColumnByType(aColumnType) {
if (this._columns[aColumnType])
return this._columns[aColumnType];
let columns = this._tree.columns;
let colCount = columns.count;
for (let i = 0; i < colCount; i++) {
let column = columns.getColumnAt(i);
let columnType = this._getColumnType(column);
this._columns[columnType] = column;
if (columnType == aColumnType)
return column;
}
// That's completely valid. Most of our trees actually include just the
// title column.
return null;
},
sortingChanged: function PTV__sortingChanged(aSortingMode) {
if (!this._tree || !this._result)
return;
// Depending on the sort mode, certain commands may be disabled.
window.updateCommands("sort");
let columns = this._tree.columns;
// Clear old sorting indicator.
let sortedColumn = columns.getSortedColumn();
if (sortedColumn)
sortedColumn.element.removeAttribute("sortDirection");
// Set new sorting indicator by looking through all columns for ours.
if (aSortingMode == Ci.nsINavHistoryQueryOptions.SORT_BY_NONE)
return;
let [desiredColumn, desiredIsDescending] =
this._sortTypeToColumnType(aSortingMode);
let colCount = columns.count;
let column = this._findColumnByType(desiredColumn);
if (column) {
let sortDir = desiredIsDescending ? "descending" : "ascending";
column.element.setAttribute("sortDirection", sortDir);
}
},
_inBatchMode: false,
batching: function PTV__batching(aToggleMode) {
if (this._inBatchMode != aToggleMode) {
this._inBatchMode = this.selection.selectEventsSuppressed = aToggleMode;
if (this._inBatchMode) {
this._tree.beginUpdateBatch();
}
else {
this._tree.endUpdateBatch();
}
}
},
get result() this._result,
set result(val) {
if (this._result) {
this._result.removeObserver(this);
this._rootNode.containerOpen = false;
}
if (val) {
this._result = val;
this._rootNode = this._result.root;
this._cellProperties = new Map();
this._cuttingNodes = new Set();
}
else if (this._result) {
delete this._result;
delete this._rootNode;
delete this._cellProperties;
delete this._cuttingNodes;
}
// If the tree is not set yet, setTree will call finishInit.
if (this._tree && val)
this._finishInit();
return val;
},
nodeForTreeIndex: function PTV_nodeForTreeIndex(aIndex) {
if (aIndex > this._rows.length)
throw Cr.NS_ERROR_INVALID_ARG;
return this._getNodeForRow(aIndex);
},
treeIndexForNode: function PTV_treeNodeForIndex(aNode) {
// The API allows passing invisible nodes.
try {
return this._getRowForNode(aNode, true);
}
catch(ex) { }
return Ci.nsINavHistoryResultTreeViewer.INDEX_INVISIBLE;
},
_getResourceForNode: function PTV_getResourceForNode(aNode)
{
let uri = aNode.uri;
NS_ASSERT(uri, "if there is no uri, we can't persist the open state");
return uri ? PlacesUIUtils.RDF.GetResource(uri) : null;
},
// nsITreeView
get rowCount() this._rows.length,
get selection() this._selection,
set selection(val) this._selection = val,
getRowProperties: function() { return ""; },
getCellProperties:
function PTV_getCellProperties(aRow, aColumn) {
// for anonid-trees, we need to add the column-type manually
var props = "";
let columnType = aColumn.element.getAttribute("anonid");
if (columnType)
props += columnType;
else
columnType = aColumn.id;
// Set the "ltr" property on url cells
if (columnType == "url")
props += " ltr";
if (columnType != "title")
return props;
let node = this._getNodeForRow(aRow);
if (this._cuttingNodes.has(node)) {
props += " cutting";
}
let properties = this._cellProperties.get(node);
if (properties === undefined) {
properties = "";
let itemId = node.itemId;
let nodeType = node.type;
if (PlacesUtils.containerTypes.indexOf(nodeType) != -1) {
if (nodeType == Ci.nsINavHistoryResultNode.RESULT_TYPE_QUERY) {
properties += " query";
if (PlacesUtils.nodeIsTagQuery(node))
properties += " tagContainer";
else if (PlacesUtils.nodeIsDay(node))
properties += " dayContainer";
else if (PlacesUtils.nodeIsHost(node))
properties += " hostContainer";
}
else if (nodeType == Ci.nsINavHistoryResultNode.RESULT_TYPE_FOLDER ||
nodeType == Ci.nsINavHistoryResultNode.RESULT_TYPE_FOLDER_SHORTCUT) {
if (this._controller.hasCachedLivemarkInfo(node)) {
properties += " livemark";
}
else {
PlacesUtils.livemarks.getLivemark(
{ id: node.itemId },
function (aStatus, aLivemark) {
if (Components.isSuccessCode(aStatus)) {
this._controller.cacheLivemarkInfo(node, aLivemark);
properties += " livemark";
// The livemark attribute is set as a cell property on the title cell.
this._invalidateCellValue(node, this.COLUMN_TYPE_TITLE);
}
}.bind(this)
);
}
}
if (itemId != -1) {
let queryName = PlacesUIUtils.getLeftPaneQueryNameFromId(itemId);
if (queryName)
properties += " OrganizerQuery_" + queryName;
}
}
else if (nodeType == Ci.nsINavHistoryResultNode.RESULT_TYPE_SEPARATOR)
properties += " separator";
else if (PlacesUtils.nodeIsURI(node)) {
properties += " " + PlacesUIUtils.guessUrlSchemeForUI(node.uri);
if (this._controller.hasCachedLivemarkInfo(node.parent)) {
properties += " livemarkItem";
if (node.accessCount) {
properties += " visited";
}
}
}
this._cellProperties.set(node, properties);
}
return props + " " + properties;
},
getColumnProperties: function(aColumn) { return ""; },
isContainer: function PTV_isContainer(aRow) {
// Only leaf nodes aren't listed in the rows array.
let node = this._rows[aRow];
if (node === undefined)
return false;
if (PlacesUtils.nodeIsContainer(node)) {
// Flat-lists may ignore expandQueries and other query options when
// they are asked to open a container.
if (this._flatList)
return true;
// treat non-expandable childless queries as non-containers
if (PlacesUtils.nodeIsQuery(node)) {
let parent = node.parent;
if ((PlacesUtils.nodeIsQuery(parent) ||
PlacesUtils.nodeIsFolder(parent)) &&
!PlacesUtils.asQuery(node).hasChildren)
return PlacesUtils.asQuery(parent).queryOptions.expandQueries;
}
return true;
}
return false;
},
isContainerOpen: function PTV_isContainerOpen(aRow) {
if (this._flatList)
return false;
// All containers are listed in the rows array.
return this._rows[aRow].containerOpen;
},
isContainerEmpty: function PTV_isContainerEmpty(aRow) {
if (this._flatList)
return true;
let node = this._rows[aRow];
if (this._controller.hasCachedLivemarkInfo(node)) {
let queryOptions = PlacesUtils.asQuery(this._result.root).queryOptions;
return queryOptions.excludeItems;
}
// All containers are listed in the rows array.
return !node.hasChildren;
},
isSeparator: function PTV_isSeparator(aRow) {
// All separators are listed in the rows array.
let node = this._rows[aRow];
return node && PlacesUtils.nodeIsSeparator(node);
},
isSorted: function PTV_isSorted() {
return this._result.sortingMode !=
Ci.nsINavHistoryQueryOptions.SORT_BY_NONE;
},
canDrop: function PTV_canDrop(aRow, aOrientation, aDataTransfer) {
if (!this._result)
throw Cr.NS_ERROR_UNEXPECTED;
// Drop position into a sorted treeview would be wrong.
if (this.isSorted())
return false;
let ip = this._getInsertionPoint(aRow, aOrientation);
return ip && PlacesControllerDragHelper.canDrop(ip, aDataTransfer);
},
_getInsertionPoint: function PTV__getInsertionPoint(index, orientation) {
let container = this._result.root;
let dropNearItemId = -1;
// When there's no selection, assume the container is the container
// the view is populated from (i.e. the result's itemId).
if (index != -1) {
let lastSelected = this.nodeForTreeIndex(index);
if (this.isContainer(index) && orientation == Ci.nsITreeView.DROP_ON) {
// If the last selected item is an open container, append _into_
// it, rather than insert adjacent to it.
container = lastSelected;
index = -1;
}
else if (lastSelected.containerOpen &&
orientation == Ci.nsITreeView.DROP_AFTER &&
lastSelected.hasChildren) {
// If the last selected node is an open container and the user is
// trying to drag into it as a first node, really insert into it.
container = lastSelected;
orientation = Ci.nsITreeView.DROP_ON;
index = 0;
}
else {
// Use the last-selected node's container.
container = lastSelected.parent;
// During its Drag & Drop operation, the tree code closes-and-opens
// containers very often (part of the XUL "spring-loaded folders"
// implementation). And in certain cases, we may reach a closed
// container here. However, we can simply bail out when this happens,
// because we would then be back here in less than a millisecond, when
// the container had been reopened.
if (!container || !container.containerOpen)
return null;
// Avoid the potentially expensive call to getChildIndex
// if we know this container doesn't allow insertion.
if (PlacesControllerDragHelper.disallowInsertion(container))
return null;
let queryOptions = PlacesUtils.asQuery(this._result.root).queryOptions;
if (queryOptions.sortingMode !=
Ci.nsINavHistoryQueryOptions.SORT_BY_NONE) {
// If we are within a sorted view, insert at the end.
index = -1;
}
else if (queryOptions.excludeItems ||
queryOptions.excludeQueries ||
queryOptions.excludeReadOnlyFolders) {
// Some item may be invisible, insert near last selected one.
// We don't replace index here to avoid requests to the db,
// instead it will be calculated later by the controller.
index = -1;
dropNearItemId = lastSelected.itemId;
}
else {
let lsi = container.getChildIndex(lastSelected);
index = orientation == Ci.nsITreeView.DROP_BEFORE ? lsi : lsi + 1;
}
}
}
if (PlacesControllerDragHelper.disallowInsertion(container))
return null;
return new InsertionPoint(PlacesUtils.getConcreteItemId(container),
index, orientation,
PlacesUtils.nodeIsTagQuery(container),
dropNearItemId);
},
drop: function PTV_drop(aRow, aOrientation, aDataTransfer) {
// We are responsible for translating the |index| and |orientation|
// parameters into a container id and index within the container,
// since this information is specific to the tree view.
let ip = this._getInsertionPoint(aRow, aOrientation);
if (ip)
PlacesControllerDragHelper.onDrop(ip, aDataTransfer);
PlacesControllerDragHelper.currentDropTarget = null;
},
getParentIndex: function PTV_getParentIndex(aRow) {
let [parentNode, parentRow] = this._getParentByChildRow(aRow);
return parentRow;
},
hasNextSibling: function PTV_hasNextSibling(aRow, aAfterIndex) {
if (aRow == this._rows.length - 1) {
// The last row has no sibling.
return false;
}
let node = this._rows[aRow];
if (node === undefined || this._isPlainContainer(node.parent)) {
// The node is a child of a plain container.
// If the next row is either unset or has the same parent,
// it's a sibling.
let nextNode = this._rows[aRow + 1];
return (nextNode == undefined || nextNode.parent == node.parent);
}
let thisLevel = node.indentLevel;
for (let i = aAfterIndex + 1; i < this._rows.length; ++i) {
let rowNode = this._getNodeForRow(i);
let nextLevel = rowNode.indentLevel;
if (nextLevel == thisLevel)
return true;
if (nextLevel < thisLevel)
break;
}
return false;
},
getLevel: function(aRow) this._getNodeForRow(aRow).indentLevel,
getImageSrc: function PTV_getImageSrc(aRow, aColumn) {
// Only the title column has an image.
if (this._getColumnType(aColumn) != this.COLUMN_TYPE_TITLE)
return "";
return this._getNodeForRow(aRow).icon;
},
getProgressMode: function(aRow, aColumn) { },
getCellValue: function(aRow, aColumn) { },
getCellText: function PTV_getCellText(aRow, aColumn) {
let node = this._getNodeForRow(aRow);
switch (this._getColumnType(aColumn)) {
case this.COLUMN_TYPE_TITLE:
// normally, this is just the title, but we don't want empty items in
// the tree view so return a special string if the title is empty.
// Do it here so that callers can still get at the 0 length title
// if they go through the "result" API.
if (PlacesUtils.nodeIsSeparator(node))
return "";
return PlacesUIUtils.getBestTitle(node, true);
case this.COLUMN_TYPE_TAGS:
return node.tags;
case this.COLUMN_TYPE_URI:
if (PlacesUtils.nodeIsURI(node))
return node.uri;
return "";
case this.COLUMN_TYPE_DATE:
let nodeTime = node.time;
if (nodeTime == 0 || !PlacesUtils.nodeIsURI(node)) {
// hosts and days shouldn't have a value for the date column.
// Actually, you could argue this point, but looking at the
// results, seeing the most recently visited date is not what
// I expect, and gives me no information I know how to use.
// Only show this for URI-based items.
return "";
}
return this._convertPRTimeToString(nodeTime);
case this.COLUMN_TYPE_VISITCOUNT:
return node.accessCount;
case this.COLUMN_TYPE_KEYWORD:
if (PlacesUtils.nodeIsBookmark(node))
return PlacesUtils.bookmarks.getKeywordForBookmark(node.itemId);
return "";
case this.COLUMN_TYPE_DESCRIPTION:
if (node.itemId != -1) {
try {
return PlacesUtils.annotations.
getItemAnnotation(node.itemId, PlacesUIUtils.DESCRIPTION_ANNO);
}
catch (ex) { /* has no description */ }
}
return "";
case this.COLUMN_TYPE_DATEADDED:
if (node.dateAdded)
return this._convertPRTimeToString(node.dateAdded);
return "";
case this.COLUMN_TYPE_LASTMODIFIED:
if (node.lastModified)
return this._convertPRTimeToString(node.lastModified);
return "";
}
return "";
},
setTree: function PTV_setTree(aTree) {
// If we are replacing the tree during a batch, there is a concrete risk
// that the treeView goes out of sync, thus it's safer to end the batch now.
// This is a no-op if we are not batching.
this.batching(false);
let hasOldTree = this._tree != null;
this._tree = aTree;
if (this._result) {
if (hasOldTree) {
// detach from result when we are detaching from the tree.
// This breaks the reference cycle between us and the result.
if (!aTree) {
this._result.removeObserver(this);
this._rootNode.containerOpen = false;
}
}
if (aTree)
this._finishInit();
}
},
toggleOpenState: function PTV_toggleOpenState(aRow) {
if (!this._result)
throw Cr.NS_ERROR_UNEXPECTED;
let node = this._rows[aRow];
if (this._flatList && this._openContainerCallback) {
this._openContainerCallback(node);
return;
}
// Persist containers open status, but never persist livemarks.
if (!this._controller.hasCachedLivemarkInfo(node)) {
let resource = this._getResourceForNode(node);
if (resource) {
const openLiteral = PlacesUIUtils.RDF.GetResource("http://home.netscape.com/NC-rdf#open");
const trueLiteral = PlacesUIUtils.RDF.GetLiteral("true");
if (node.containerOpen)
PlacesUIUtils.localStore.Unassert(resource, openLiteral, trueLiteral);
else
PlacesUIUtils.localStore.Assert(resource, openLiteral, trueLiteral, true);
}
}
node.containerOpen = !node.containerOpen;
},
cycleHeader: function PTV_cycleHeader(aColumn) {
if (!this._result)
throw Cr.NS_ERROR_UNEXPECTED;
// Sometimes you want a tri-state sorting, and sometimes you don't. This
// rule allows tri-state sorting when the root node is a folder. This will
// catch the most common cases. When you are looking at folders, you want
// the third state to reset the sorting to the natural bookmark order. When
// you are looking at history, that third state has no meaning so we try
// to disallow it.
//
// The problem occurs when you have a query that results in bookmark
// folders. One example of this is the subscriptions view. In these cases,
// this rule doesn't allow you to sort those sub-folders by their natural
// order.
let allowTriState = PlacesUtils.nodeIsFolder(this._result.root);
let oldSort = this._result.sortingMode;
let oldSortingAnnotation = this._result.sortingAnnotation;
let newSort;
let newSortingAnnotation = "";
const NHQO = Ci.nsINavHistoryQueryOptions;
switch (this._getColumnType(aColumn)) {
case this.COLUMN_TYPE_TITLE:
if (oldSort == NHQO.SORT_BY_TITLE_ASCENDING)
newSort = NHQO.SORT_BY_TITLE_DESCENDING;
else if (allowTriState && oldSort == NHQO.SORT_BY_TITLE_DESCENDING)
newSort = NHQO.SORT_BY_NONE;
else
newSort = NHQO.SORT_BY_TITLE_ASCENDING;
break;
case this.COLUMN_TYPE_URI:
if (oldSort == NHQO.SORT_BY_URI_ASCENDING)
newSort = NHQO.SORT_BY_URI_DESCENDING;
else if (allowTriState && oldSort == NHQO.SORT_BY_URI_DESCENDING)
newSort = NHQO.SORT_BY_NONE;
else
newSort = NHQO.SORT_BY_URI_ASCENDING;
break;
case this.COLUMN_TYPE_DATE:
if (oldSort == NHQO.SORT_BY_DATE_ASCENDING)
newSort = NHQO.SORT_BY_DATE_DESCENDING;
else if (allowTriState &&
oldSort == NHQO.SORT_BY_DATE_DESCENDING)
newSort = NHQO.SORT_BY_NONE;
else
newSort = NHQO.SORT_BY_DATE_ASCENDING;
break;
case this.COLUMN_TYPE_VISITCOUNT:
// visit count default is unusual because we sort by descending
// by default because you are most likely to be looking for
// highly visited sites when you click it
if (oldSort == NHQO.SORT_BY_VISITCOUNT_DESCENDING)
newSort = NHQO.SORT_BY_VISITCOUNT_ASCENDING;
else if (allowTriState && oldSort == NHQO.SORT_BY_VISITCOUNT_ASCENDING)
newSort = NHQO.SORT_BY_NONE;
else
newSort = NHQO.SORT_BY_VISITCOUNT_DESCENDING;
break;
case this.COLUMN_TYPE_KEYWORD:
if (oldSort == NHQO.SORT_BY_KEYWORD_ASCENDING)
newSort = NHQO.SORT_BY_KEYWORD_DESCENDING;
else if (allowTriState && oldSort == NHQO.SORT_BY_KEYWORD_DESCENDING)
newSort = NHQO.SORT_BY_NONE;
else
newSort = NHQO.SORT_BY_KEYWORD_ASCENDING;
break;
case this.COLUMN_TYPE_DESCRIPTION:
if (oldSort == NHQO.SORT_BY_ANNOTATION_ASCENDING &&
oldSortingAnnotation == PlacesUIUtils.DESCRIPTION_ANNO) {
newSort = NHQO.SORT_BY_ANNOTATION_DESCENDING;
newSortingAnnotation = PlacesUIUtils.DESCRIPTION_ANNO;
}
else if (allowTriState &&
oldSort == NHQO.SORT_BY_ANNOTATION_DESCENDING &&
oldSortingAnnotation == PlacesUIUtils.DESCRIPTION_ANNO)
newSort = NHQO.SORT_BY_NONE;
else {
newSort = NHQO.SORT_BY_ANNOTATION_ASCENDING;
newSortingAnnotation = PlacesUIUtils.DESCRIPTION_ANNO;
}
break;
case this.COLUMN_TYPE_DATEADDED:
if (oldSort == NHQO.SORT_BY_DATEADDED_ASCENDING)
newSort = NHQO.SORT_BY_DATEADDED_DESCENDING;
else if (allowTriState &&
oldSort == NHQO.SORT_BY_DATEADDED_DESCENDING)
newSort = NHQO.SORT_BY_NONE;
else
newSort = NHQO.SORT_BY_DATEADDED_ASCENDING;
break;
case this.COLUMN_TYPE_LASTMODIFIED:
if (oldSort == NHQO.SORT_BY_LASTMODIFIED_ASCENDING)
newSort = NHQO.SORT_BY_LASTMODIFIED_DESCENDING;
else if (allowTriState &&
oldSort == NHQO.SORT_BY_LASTMODIFIED_DESCENDING)
newSort = NHQO.SORT_BY_NONE;
else
newSort = NHQO.SORT_BY_LASTMODIFIED_ASCENDING;
break;
case this.COLUMN_TYPE_TAGS:
if (oldSort == NHQO.SORT_BY_TAGS_ASCENDING)
newSort = NHQO.SORT_BY_TAGS_DESCENDING;
else if (allowTriState && oldSort == NHQO.SORT_BY_TAGS_DESCENDING)
newSort = NHQO.SORT_BY_NONE;
else
newSort = NHQO.SORT_BY_TAGS_ASCENDING;
break;
default:
throw Cr.NS_ERROR_INVALID_ARG;
}
this._result.sortingAnnotation = newSortingAnnotation;
this._result.sortingMode = newSort;
},
isEditable: function PTV_isEditable(aRow, aColumn) {
// At this point we only support editing the title field.
if (aColumn.index != 0)
return false;
// Only bookmark-nodes are editable, and those are never built lazily
let node = this._rows[aRow];
if (!node || node.itemId == -1)
return false;
// The following items are never editable:
// * Read-only items.
// * places-roots
// * separators
if (PlacesUtils.nodeIsReadOnly(node) ||
PlacesUtils.nodeIsSeparator(node))
return false;
if (PlacesUtils.nodeIsFolder(node)) {
let itemId = PlacesUtils.getConcreteItemId(node);
if (PlacesUtils.isRootItem(itemId))
return false;
}
return true;
},
setCellText: function PTV_setCellText(aRow, aColumn, aText) {
// We may only get here if the cell is editable.
let node = this._rows[aRow];
if (node.title != aText) {
let txn = new PlacesEditItemTitleTransaction(node.itemId, aText);
PlacesUtils.transactionManager.doTransaction(txn);
}
},
toggleCutNode: function PTV_toggleCutNode(aNode, aValue) {
let currentVal = this._cuttingNodes.has(aNode);
if (currentVal != aValue) {
if (aValue)
this._cuttingNodes.add(aNode);
else
this._cuttingNodes.delete(aNode);
this._invalidateCellValue(aNode, this.COLUMN_TYPE_TITLE);
}
},
selectionChanged: function() { },
cycleCell: function(aRow, aColumn) { },
isSelectable: function(aRow, aColumn) { return false; },
performAction: function(aAction) { },
performActionOnRow: function(aAction, aRow) { },
performActionOnCell: function(aAction, aRow, aColumn) { }
};