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Preparation for ender-based text control

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* added focus listener.  Doesn't do much yet, but when focus notifications start appearing, we'll be ready for them.  The code is in
place to hide selection when we lose focus and paint selection when we get focus.  That's probably not quite right, but it's a start.
We will need to be able to determine the distinction between losing focus to another control within our app, and losing focus to
another app.
* added support for disabled and readonly states in the editor.  This is accomplished by having flags set by the client, and letting the
rules system deal with those flags.  The flags I added are:
     TEXT_EDITOR_FLAG_PLAINTEXT   0x01   // only plain text editing is allowed
     TEXT_EDITOR_FLAG_SINGLELINE  0x02   // enter key and CR-LF handled specially
     TEXT_EDITOR_FLAG_PASSWORD    0x04   // text is not entered into content, only a representative character
     TEXT_EDITOR_FLAG_READONLY    0x08   // editing events are disabled.  Editor may still accept focus.
     TEXT_EDITOR_FLAG_DISALBED    0x10   // all events are disabled (like scrolling).  Editor will not accept focus.
* added WillInsertBreak/DidInsertBreak into text rules, so flags could be checked.  This gets us readonly, disabled, and single line
behavior.
* cleaned up the code that allocates, registers, and destroys event listeners.  Thanks to Kin and Simon for cleaning up the
ownership model on the listeners, it was a big help.
* added support for a max text length.  You can now tell the text editor, be no bigger than n characters.


git-svn-id: svn://10.0.0.236/trunk@33153 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
buster%netscape.com
1999-05-28 21:24:18 +00:00
parent 677f048b01
commit 9041cef161
22 changed files with 782 additions and 271 deletions
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189
mozilla/editor/base/nsTextEditor.cpp
View File

@@ -36,6 +36,7 @@
#include "nsIDOMKeyListener.h"
#include "nsIDOMMouseListener.h"
#include "nsIDOMDragListener.h"
#include "nsIDOMFocusListener.h"
#include "nsIDOMSelection.h"
#include "nsIDOMRange.h"
#include "nsIDOMNodeList.h"
@@ -97,9 +98,6 @@ static NS_DEFINE_CID(kCContentIteratorCID, NS_CONTENTITERATOR_CID);
static NS_DEFINE_CID(kCRangeCID, NS_RANGE_CID);
static NS_DEFINE_CID(kPrefServiceCID, NS_PREF_CID);
//static NS_DEFINE_IID(kIInputStreamIID, NS_IINPUTSTREAM_IID);
//static NS_DEFINE_IID(kIOutputStreamIID, NS_IOUTPUTSTREAM_IID);
#ifdef NS_DEBUG
static PRBool gNoisy = PR_FALSE;
@@ -155,6 +153,7 @@ nsTextEditor::nsTextEditor()
// NS_INIT_REFCNT();
mRules = nsnull;
nsEditProperty::InstanceInit();
mMaxTextLength = -1;
}
nsTextEditor::~nsTextEditor()
@@ -175,19 +174,18 @@ nsTextEditor::~nsTextEditor()
if (mMouseListenerP) {
erP->RemoveEventListenerByIID(mMouseListenerP, nsIDOMMouseListener::GetIID());
}
if (mTextListenerP) {
erP->RemoveEventListenerByIID(mTextListenerP, nsIDOMTextListener::GetIID());
}
if (mCompositionListenerP) {
erP->RemoveEventListenerByIID(mCompositionListenerP, nsIDOMCompositionListener::GetIID());
}
if (mDragListenerP) {
erP->RemoveEventListenerByIID(mDragListenerP, nsIDOMDragListener::GetIID());
if (mTextListenerP) {
erP->RemoveEventListenerByIID(mTextListenerP, nsIDOMTextListener::GetIID());
}
if (mCompositionListenerP) {
erP->RemoveEventListenerByIID(mCompositionListenerP, nsIDOMCompositionListener::GetIID());
}
if (mFocusListenerP) {
erP->RemoveEventListenerByIID(mFocusListenerP, nsIDOMFocusListener::GetIID());
}
if (mDragListenerP) {
erP->RemoveEventListenerByIID(mDragListenerP, nsIDOMDragListener::GetIID());
}
}
else
NS_NOTREACHED("~nsTextEditor");
@@ -228,7 +226,8 @@ NS_IMETHODIMP nsTextEditor::QueryInterface(REFNSIID aIID, void** aInstancePtr)
return nsEditor::QueryInterface(aIID, aInstancePtr);
}
NS_IMETHODIMP nsTextEditor::Init(nsIDOMDocument *aDoc, nsIPresShell *aPresShell)
NS_IMETHODIMP nsTextEditor::Init(nsIDOMDocument *aDoc,
nsIPresShell *aPresShell)
{
NS_PRECONDITION(nsnull!=aDoc && nsnull!=aPresShell, "bad arg");
nsresult result=NS_ERROR_NULL_POINTER;
@@ -258,94 +257,121 @@ NS_IMETHODIMP nsTextEditor::Init(nsIDOMDocument *aDoc, nsIPresShell *aPresShell)
// Init the rules system
InitRules();
// get a key listener
result = NS_NewEditorKeyListener(getter_AddRefs(mKeyListenerP), this);
if (NS_OK != result) {
HandleEventListenerError();
return result;
}
// get a mouse listener
result = NS_NewEditorMouseListener(getter_AddRefs(mMouseListenerP), this);
if (NS_OK != result) {
#ifdef DEBUG_akkana
printf("Couldn't get mouse listener\n");
#endif
// drop the key listener if we couldn't get a mouse listener.
mKeyListenerP = do_QueryInterface(0);
HandleEventListenerError();
return result;
}
result = NS_NewEditorTextListener(getter_AddRefs(mTextListenerP),this);
if (NS_OK !=result) {
// drop the key and mouse listeners
// get a text listener
result = NS_NewEditorTextListener(getter_AddRefs(mTextListenerP),this);
if (NS_OK !=result)
{
#ifdef DEBUG_TAGUE
printf("nsTextEditor.cpp: failed to get TextEvent Listener\n");
#endif
mMouseListenerP = do_QueryInterface(0);
mKeyListenerP = do_QueryInterface(0);
return result;
}
HandleEventListenerError();
return result;
}
result = NS_NewEditorCompositionListener(getter_AddRefs(mCompositionListenerP),this);
if (NS_OK!=result) {
// drop the key and mouse listeners
// get a composition listener
result = NS_NewEditorCompositionListener(getter_AddRefs(mCompositionListenerP),this);
if (NS_OK!=result)
{
#ifdef DEBUG_TAGUE
printf("nsTextEditor.cpp: failed to get TextEvent Listener\n");
#endif
mMouseListenerP = do_QueryInterface(0);
mKeyListenerP = do_QueryInterface(0);
mTextListenerP = do_QueryInterface(0);
return result;
}
HandleEventListenerError();
return result;
}
// get a drag listener
result = NS_NewEditorDragListener(getter_AddRefs(mDragListenerP), this);
if (NS_OK != result) {
//return result;
mMouseListenerP = do_QueryInterface(0);
mKeyListenerP = do_QueryInterface(0);
mTextListenerP = do_QueryInterface(0);
mCompositionListenerP = do_QueryInterface(0);
}
nsCOMPtr<nsIDOMEventReceiver> erP;
result = aDoc->QueryInterface(nsIDOMEventReceiver::GetIID(), getter_AddRefs(erP));
if (NS_OK != result)
{
mKeyListenerP = do_QueryInterface(0);
mMouseListenerP = do_QueryInterface(0); //dont need these if we cant register them
mTextListenerP = do_QueryInterface(0);
mDragListenerP = do_QueryInterface(0); //dont need these if we cant register them
mCompositionListenerP = do_QueryInterface(0);
HandleEventListenerError();
//return result; // XXX: why is this return commented out?
}
// get a focus listener
result = NS_NewEditorFocusListener(getter_AddRefs(mFocusListenerP), this);
if (NS_OK != result)
{
HandleEventListenerError();
return result;
}
//cmanske: Shouldn't we check result from this?
result = erP->AddEventListenerByIID(mKeyListenerP, nsIDOMKeyListener::GetIID());
// get the DOM event receiver
nsCOMPtr<nsIDOMEventReceiver> erP;
result = aDoc->QueryInterface(nsIDOMEventReceiver::GetIID(), getter_AddRefs(erP));
if (!NS_SUCCEEDED(result))
{
printf("nsTextEditor::Init -- faile to add mKeyListenerP\n");
HandleEventListenerError();
return result;
}
// register the event listeners with the DOM event reveiver
result = erP->AddEventListenerByIID(mKeyListenerP, nsIDOMKeyListener::GetIID());
NS_ASSERTION(NS_SUCCEEDED(result), "failed to register key listener");
result = erP->AddEventListenerByIID(mMouseListenerP, nsIDOMMouseListener::GetIID());
NS_ASSERTION(NS_SUCCEEDED(result), "failed to register mouse listener");
result = erP->AddEventListenerByIID(mFocusListenerP, nsIDOMFocusListener::GetIID());
NS_ASSERTION(NS_SUCCEEDED(result), "failed to register focus listener");
result = erP->AddEventListenerByIID(mTextListenerP, nsIDOMTextListener::GetIID());
NS_ASSERTION(NS_SUCCEEDED(result), "failed to register text listener");
result = erP->AddEventListenerByIID(mCompositionListenerP, nsIDOMCompositionListener::GetIID());
NS_ASSERTION(NS_SUCCEEDED(result), "failed to register composition listener");
#ifdef NEW_DRAG_AND_DROP
erP->AddEventListenerByIID(mDragListenerP, nsIDOMDragListener::GetIID());
#endif
erP->AddEventListenerByIID(mMouseListenerP, nsIDOMMouseListener::GetIID());
erP->AddEventListenerByIID(mTextListenerP, nsIDOMTextListener::GetIID());
erP->AddEventListenerByIID(mCompositionListenerP, nsIDOMCompositionListener::GetIID());
result = NS_OK;
result = erP->AddEventListenerByIID(mDragListenerP, nsIDOMDragListener::GetIID());
NS_ASSERTION(NS_SUCCEEDED(result), "failed to register drag listener");
#endif result = NS_OK;
EnableUndo(PR_TRUE);
}
return result;
}
void nsTextEditor::InitRules()
void nsTextEditor::HandleEventListenerError()
{
printf("failed to add event listener\n");
mKeyListenerP = do_QueryInterface(0);
mMouseListenerP = do_QueryInterface(0);
mTextListenerP = do_QueryInterface(0);
mDragListenerP = do_QueryInterface(0);
mCompositionListenerP = do_QueryInterface(0);
mFocusListenerP = do_QueryInterface(0);
}
void nsTextEditor::InitRules()
{
// instantiate the rules for this text editor
// XXX: we should be told which set of rules to instantiate
mRules = new nsTextEditRules();
mRules->Init(this);
}
NS_IMETHODIMP
nsTextEditor::GetFlags(PRUint32 *aFlags)
{
if (!mRules || !aFlags) { return NS_ERROR_NULL_POINTER; }
return mRules->GetFlags(aFlags);
}
NS_IMETHODIMP
nsTextEditor::SetFlags(PRUint32 aFlags)
{
if (!mRules) { return NS_ERROR_NULL_POINTER; }
return mRules->SetFlags(aFlags);
}
NS_IMETHODIMP nsTextEditor::SetTextProperty(nsIAtom *aProperty,
const nsString *aAttribute,
@@ -803,17 +829,10 @@ NS_IMETHODIMP nsTextEditor::DeleteSelection(nsIEditor::ECollapsedSelectionAction
nsresult endTxnResult = nsEditor::EndTransaction(); // don't return this result!
NS_ASSERTION ((NS_SUCCEEDED(endTxnResult)), "bad end transaction result");
// XXXX: Horrible hack! We are doing this because
// of an error in Gecko which is not rendering the
// document after a change via the DOM - gpk 2/13/99
// BEGIN HACK!!!
// HACKForceRedraw();
// END HACK
return result;
}
/* XXX InsertText must respect mMaxTextLength */
NS_IMETHODIMP nsTextEditor::InsertText(const nsString& aStringToInsert)
{
if (!mRules) { return NS_ERROR_NOT_INITIALIZED; }
@@ -841,18 +860,34 @@ NS_IMETHODIMP nsTextEditor::InsertText(const nsString& aStringToInsert)
if (placeholderTxn)
placeholderTxn->SetAbsorb(PR_FALSE); // this ends the merging of txns into placeholderTxn
// BEGIN HACK!!!
// HACKForceRedraw();
// END HACK
return result;
}
NS_IMETHODIMP nsTextEditor::SetMaxTextLength(PRInt32 aMaxTextLength)
{
mMaxTextLength = aMaxTextLength;
return NS_OK;
}
NS_IMETHODIMP nsTextEditor::InsertBreak()
{
// For plainttext just pass newlines through
nsAutoString key;
key += '\n';
return InsertText(key);
nsCOMPtr<nsIDOMSelection> selection;
PRBool cancel= PR_FALSE;
// pre-process
nsEditor::GetSelection(getter_AddRefs(selection));
nsTextRulesInfo ruleInfo(nsTextEditRules::kInsertBreak);
nsresult result = mRules->WillDoAction(selection, &ruleInfo, &cancel);
if ((PR_FALSE==cancel) && (NS_SUCCEEDED(result)))
{
// For plainttext just pass newlines through
nsAutoString key;
key += '\n';
result = InsertText(key);
nsEditor::GetSelection(getter_AddRefs(selection));
result = mRules->DidDoAction(selection, &ruleInfo, result);
}
return result;
}