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Lots o' utility routines, some new, some code moved from other parts of the app. Things like building and extracting the most common flavor data types.

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git-svn-id: svn://10.0.0.236/trunk@5949 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
pinkerton%netscape.com
1998-07-20 16:09:05 +00:00
parent 4eec5875b6
commit 027c9ef5ae
2 changed files with 237 additions and 62 deletions
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282
mozilla/cmd/macfe/gui/CURLDragHelper.cp
View File

@@ -34,6 +34,7 @@
#include "CURLDispatcher.h"
#include "macutil.h"
#include "FSpCompat.h"
#include "CAutoPtrXP.h"
//
@@ -197,29 +198,8 @@ CURLDragHelper :: DoDragSendData( const char* inURL, char* inTitle, FlavorType i
case emBookmarkDrag:
{
string urlAndTitle(inURL);
/*
if (theElement->type == LO_IMAGE)
{
urlAndTitle += "\r[Image]";
}
else if (theElement->type == LO_TEXT)
*/
{
urlAndTitle += "\r";
string title;
if (inTitle)
{
urlAndTitle += inTitle;
}
else
{
urlAndTitle += inURL;
}
}
// send url<CR>title with the null terminator
string urlAndTitle = CreateBookmarkFlavorURL ( inURL, inTitle );
::SetDragItemFlavorData(inDragRef, inItemRef, inFlavor, urlAndTitle.c_str(), urlAndTitle.length() + 1, 0);
}
break;
@@ -262,6 +242,110 @@ CURLDragHelper :: MakeIconTextValid ( const char* inText )
} // MakeIconTextValid
//
// ExtractURLAndTitle
// THROWS errorCode (int)
//
// Extracts the url and title from a bookmark drag (url\rtitle). Will throw if
// can't get the right data.
//
void
CURLDragHelper :: ExtractURLAndTitle ( DragReference inDragRef, ItemReference inItemRef,
string & outURL, string & outTitle )
{
Size theDataSize = 0;
OSErr err = ::GetFlavorDataSize(inDragRef, inItemRef, emBookmarkDrag, &theDataSize);
if ( err && err != badDragFlavorErr )
throw(err);
else if ( theDataSize ) {
vector<char> urlAndTitle ( theDataSize + 1 );
ThrowIfOSErr_( ::GetFlavorData( inDragRef, inItemRef, emBookmarkDrag,
urlAndTitle.begin(), &theDataSize, 0 ) );
urlAndTitle[theDataSize] = NULL;
char* title = find(urlAndTitle.begin(), urlAndTitle.end(), '\r');
if ( title != urlAndTitle.end() ) {
// hack up the data string into it's components
title[0] = NULL;
title++;
char* url = urlAndTitle.begin();
// assign those components to the output parameters
outURL = url;
outTitle = title;
}
else {
outURL = urlAndTitle.begin();
outTitle = "";
}
}
else
throw(0);
} // ExtractURLAndTitle
//
// ExtractFileURL
// THROWS errorcode (int)
//
// Extracts the file url from a file drag.
void
CURLDragHelper :: ExtractFileURL ( DragReference inDragRef, ItemReference inItemRef,
string & outFileName, HFSFlavor & outData )
{
Boolean ignore1, ignore2;
Size theDataSize = 0;
::GetFlavorDataSize(inDragRef, inItemRef, flavorTypeHFS, &theDataSize);
OSErr anError = ::GetFlavorData(inDragRef, inItemRef, flavorTypeHFS, &outData, &theDataSize, nil);
if ( anError == badDragFlavorErr )
ThrowIfOSErr_( ::GetHFSFlavorFromPromise (inDragRef, inItemRef, &outData, true) );
// if there's an error resolving the alias, the local file url will refer to the alias itself.
::ResolveAliasFile(&outData.fileSpec, true, &ignore1, &ignore2);
CAutoPtrXP<char> localURL = CFileMgr::GetURLFromFileSpec(outData.fileSpec);
if ( localURL.get() )
outFileName = localURL.get();
else
throw(0);
} // ExtractFileURL
//
// CreateBookmarkFlavorURL
//
// build a url/title pair for the bookmark flavor. This is of the form: URL <CR> title.
//
string
CURLDragHelper :: CreateBookmarkFlavorURL ( const char* inURL, const char* inTitle )
{
string urlAndTitle(inURL);
/*
if (theElement->type == LO_IMAGE)
{
urlAndTitle += "\r[Image]";
}
else if (theElement->type == LO_TEXT)
*/
{
urlAndTitle += "\r";
if (inTitle)
{
urlAndTitle += inTitle;
}
else
{
urlAndTitle += inURL;
}
}
return urlAndTitle;
} // CreateBookmarkFlavorURL
#pragma mark -
@@ -300,28 +384,13 @@ CURLDragMixin :: ReceiveDragItem ( DragReference inDragRef, DragAttributes /*inD
case emBookmarkDrag:
{
OSErr err = ::GetFlavorDataSize(inDragRef, inItemRef, emBookmarkDrag, &theDataSize);
if ( err && err != badDragFlavorErr )
throw(err);
else if ( theDataSize ) {
vector<char> urlAndTitle ( theDataSize + 1 );
try {
ThrowIfOSErr_( ::GetFlavorData( inDragRef, inItemRef, emBookmarkDrag,
urlAndTitle.begin(), &theDataSize, 0 ) );
urlAndTitle[theDataSize] = NULL;
char* title = find(urlAndTitle.begin(), urlAndTitle.end(), '\r');
if ( title != urlAndTitle.end() ) {
title[0] = NULL;
title++;
char* url = urlAndTitle.begin();
HandleDropOfPageProxy ( url, title );
}
else
throw(0);
}
catch ( ... ) {
DebugStr ( "\pError getting flavor data for proxy drag" );
}
try {
string url, title;
CURLDragHelper::ExtractURLAndTitle ( inDragRef, inItemRef, url, title ) ;
HandleDropOfPageProxy ( url.c_str(), title.c_str() );
}
catch ( ... ) {
DebugStr ( "\pError getting flavor data for proxy drag" );
}
}
break;
@@ -329,21 +398,14 @@ CURLDragMixin :: ReceiveDragItem ( DragReference inDragRef, DragAttributes /*inD
case flavorTypeHFS:
case flavorTypePromiseHFS:
{
HFSFlavor theData;
Boolean ignore1, ignore2;
::GetFlavorDataSize(inDragRef, inItemRef, flavorTypeHFS, &theDataSize);
OSErr anError = ::GetFlavorData(inDragRef, inItemRef, flavorTypeHFS, &theData, &theDataSize, nil);
if ( anError == badDragFlavorErr )
ThrowIfOSErr_( ::GetHFSFlavorFromPromise (inDragRef, inItemRef, &theData, true) );
// if there's an error resolving the alias, the local file url will refer to the alias itself.
::ResolveAliasFile(&theData.fileSpec, true, &ignore1, &ignore2);
char* localURL = CFileMgr::GetURLFromFileSpec(theData.fileSpec);
Assert_(localURL != nil);
if ( localURL ) {
HandleDropOfLocalFile ( localURL, CStr255(theData.fileSpec.name), theData );
XP_FREE(localURL);
try {
string url;
HFSFlavor theData;
CURLDragHelper::ExtractFileURL ( inDragRef, inItemRef, url, theData ) ;
HandleDropOfLocalFile ( url.c_str(), CStr255(theData.fileSpec.name), theData );
}
catch ( ... ) {
DebugStr ( "\pError getting flavor data for proxy drag" );
}
}
break;
@@ -390,7 +452,7 @@ CURLDragMixin :: ReceiveDragItem ( DragReference inDragRef, DragAttributes /*inD
//
bool
CURLDragMixin :: FindBestFlavor ( DragReference inDragRef, ItemReference inItemRef,
FlavorType & oFlavor )
FlavorType & oFlavor ) const
{
// a function object which implements the body of the find_if() loop below. Returns
// true if the flavor given is present in the drag item
@@ -474,4 +536,102 @@ CHTAwareURLDragMixin :: ReceiveDragItem ( DragReference inDragRef, DragAttribute
DebugStr ( "\pCan't find the flavor we want; g" );
}
} // ReceiveDragItem
} // ReceiveDragItem
//
// NodeCanAcceptDrop
//
// Check each item in the drop to see if it can be dropped on the particular node given in |inTargetNode|.
// This will _and_ together the results for all the items in a drag so that if any of of them succeeds,
// they all do. Is this the right behavior?
//
bool
CHTAwareURLDragMixin :: NodeCanAcceptDrop ( DragReference inDragRef, HT_Resource inTargetNode ) const
{
Uint16 itemCount;
::CountDragItems(inDragRef, &itemCount);
bool acceptableDrop = true;
bool targetIsContainer = HT_IsContainer ( inTargetNode );
for ( Uint16 item = 1; item <= itemCount; item++ ) {
ItemReference itemRef;
::GetDragItemReferenceNumber(inDragRef, item, &itemRef);
try {
FlavorType useFlavor;
FindBestFlavor ( inDragRef, itemRef, useFlavor );
switch ( useFlavor ) {
case emHTNodeDrag:
{
try {
HT_Resource draggedNode = NULL;
Size theDataSize = sizeof(HT_Resource);
ThrowIfOSErr_(::GetFlavorData( inDragRef, itemRef, emHTNodeDrag, &draggedNode, &theDataSize, 0 ));
if ( targetIsContainer )
acceptableDrop &= HT_CanDropHTROn ( inTargetNode, draggedNode ); // FIX TO CHANGE CURSOR
else
acceptableDrop &= HT_CanDropHTRAtPos ( inTargetNode, draggedNode, PR_TRUE );
}
catch ( ... ) {
acceptableDrop = false;
}
}
break;
case emBookmarkDrag:
{
try {
string url, title;
CURLDragHelper::ExtractURLAndTitle ( inDragRef, itemRef, url, title );
char* castURL = const_cast<char*>(url.c_str()); // lame.
if ( targetIsContainer )
acceptableDrop &= HT_CanDropURLOn ( inTargetNode, castURL ); // FIX TO CHANGE CURSOR
else
acceptableDrop &= HT_CanDropURLAtPos ( inTargetNode, castURL, PR_TRUE );
}
catch ( ... ) {
acceptableDrop = false;
}
}
break;
case flavorTypeHFS:
case flavorTypePromiseHFS:
{
try {
string url;
HFSFlavor ignored;
CURLDragHelper::ExtractFileURL ( inDragRef, itemRef, url, ignored );
char* castURL = const_cast<char*>(url.c_str()); // lame.
if ( targetIsContainer )
acceptableDrop &= HT_CanDropURLOn ( inTargetNode, castURL ); // FIX TO CHANGE CURSOR....
else
acceptableDrop &= HT_CanDropURLAtPos ( inTargetNode, castURL, PR_TRUE );
}
catch ( ... ) {
acceptableDrop = false;
}
}
break;
case 'TEXT':
break;
default:
// throw?
break;
}
}
catch ( ... ) {
#if DEBUG
DebugStr("\pDrag with no recognized flavors; g");
#endif
}
} // for each file
return acceptableDrop;
} // NodeCanAcceptDrop

17
mozilla/cmd/macfe/gui/CURLDragHelper.h
View File

@@ -61,10 +61,22 @@ public:
static void DoDragSendData ( const char* inURL, char* inTitle, FlavorType inFlavor,
ItemReference inItemRef, DragReference inDragRef) ;
// Extracts the url and title from a bookmark drag (url\rtitle). Will throw if
// can't get the right data.
static void ExtractURLAndTitle ( DragReference inDragRef, ItemReference inItemRef,
string & outURL, string & outTitle ) ;
// Extracts the file url from a file drag. Will throw if can't get the right data.
static void ExtractFileURL ( DragReference inDragRef, ItemReference inItemRef,
string & outFileName, HFSFlavor & outData ) ;
// Make sure the caption for an icon isn't too long so that it leaves turds.
// handles middle truncation, etc if title is too long
static string MakeIconTextValid ( const char* inTitle );
// build a url/title pair for the bookmark flavor.
static string CreateBookmarkFlavorURL ( const char* inURL, const char* inTitle ) ;
}; // CURLDragHelper
@@ -88,7 +100,7 @@ protected:
virtual void ReceiveDragItem ( DragReference inDragRef, DragAttributes /*inDragAttrs*/,
ItemReference inItemRef, Rect & /*inItemBounds*/ ) ;
virtual bool FindBestFlavor ( DragReference inDragRef, ItemReference inItemRef,
FlavorType & oFlavor ) ;
FlavorType & oFlavor ) const;
// must override to do the right thing
virtual void HandleDropOfPageProxy ( const char* inURL, const char* inTitle ) = 0;
@@ -133,4 +145,7 @@ protected:
// must override to do the right thing
virtual void HandleDropOfHTResource ( HT_Resource node ) = 0;
// help to determine if HT will accept all the items dropped on this pane
virtual bool NodeCanAcceptDrop ( DragReference inDragRef, HT_Resource inTargetNode ) const;
}; // CHTAwareURLDragMixin