/*

File: Help.c

Abstract: Sets help tags for the preferences window and preferences dialog.

Version: 4.0

Change History:

    <4.0>   removed all Classic code

            removed CalculateBalloonHelpRects and DisplayHelpBalloons

    <3.0>   no changes necessary

    <2.0>   added support for help tags

            this was a bit of a chore for the preferences window 

            because of the list

    <1.0>   first release version

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*/

#include "ExamplePrefs.h"

#include "Help.h"

#include "PrefsDialog.h"

static HMWindowContentUPP gPrefsWindowHelpContent;

static pascal OSStatus displayPrefsWindowHelpTags(WindowRef prefsWindow, Point mouseLocation, 

                                                    HMContentRequest request, 

                                                    HMContentProvidedType *contentProvided, 

                                                    HMHelpContentPtr helpContent);

// --------------------------------------------------------------------------------------

void InstallPrefsWindowHelpTags(WindowRef prefsWindow)

{

    HMHelpContentRec userPaneContent, staticTextContent;

    ControlRef rootControl, userPane, staticText;

    UInt16 panelIndex;

        // install a help tag callback for the list

    gPrefsWindowHelpContent = NewHMWindowContentUPP(displayPrefsWindowHelpTags);

    HMInstallWindowContentCallback(prefsWindow, gPrefsWindowHelpContent);

        // set the help tags for the user panes

    userPaneContent.version = kMacHelpVersion;

    SetRect(&userPaneContent.absHotRect, 0, 0, 0, 0);

    userPaneContent.tagSide = kHMDefaultSide;

    userPaneContent.content[kHMMinimumContentIndex].contentType = kHMStringResContent;

    userPaneContent.content[kHMMinimumContentIndex].u.tagStringRes.hmmResID = rHelpStrings;

    userPaneContent.content[kHMMinimumContentIndex].u.tagStringRes.hmmIndex = 3;

    userPaneContent.content[kHMMaximumContentIndex].contentType = kHMNoContent;

        // set the help tags for the static texts

    staticTextContent.version = kMacHelpVersion;

    SetRect(&staticTextContent.absHotRect, 0, 0, 0, 0);

    staticTextContent.tagSide = kHMDefaultSide;

    staticTextContent.content[kHMMinimumContentIndex].contentType = kHMStringResContent;

    staticTextContent.content[kHMMinimumContentIndex].u.tagStringRes.hmmResID = rHelpStrings;

    staticTextContent.content[kHMMinimumContentIndex].u.tagStringRes.hmmIndex = 2;

    staticTextContent.content[kHMMaximumContentIndex].contentType = kHMNoContent;

    GetRootControl(prefsWindow, &rootControl);

    for (panelIndex = 1; panelIndex <=  kNumberOfRows; panelIndex++)

    {

        GetIndexedSubControl(rootControl, panelIndex, &userPane);

        HMSetControlHelpContent(userPane, &userPaneContent);

        GetIndexedSubControl(userPane, 1, &staticText);

        HMSetControlHelpContent(staticText, &staticTextContent);

    }

}

// --------------------------------------------------------------------------------------

void DisposePrefsWindowHelpTags(void)

{

    DisposeHMWindowContentUPP(gPrefsWindowHelpContent);

}

// --------------------------------------------------------------------------------------

static pascal OSStatus displayPrefsWindowHelpTags(WindowRef prefsWindow, Point mouseLocation, 

                                                    HMContentRequest request, 

                                                    HMContentProvidedType *contentProvided, 

                                                    HMHelpContentPtr helpContent)

{

    OSStatus result = noErr;

    GrafPtr savedPort;

    ListHandle iconList;

    Rect hotRect;

    switch (request)

    {

        case kHMSupplyContent:

            GetPort(&savedPort);

            SetPortWindowPort(prefsWindow);

            GlobalToLocal(&mouseLocation);

            GetWindowProperty(prefsWindow, kAppSignature, kIconListTag, sizeof(ListHandle), 

                                NULL, &iconList);

            GetListViewBounds(iconList, &hotRect);

            if (!PtInRect(mouseLocation, &hotRect))

                *contentProvided = kHMContentNotProvided;

            else

            {

                *contentProvided = kHMContentProvided;

                helpContent->version = kMacHelpVersion;

                LocalToGlobal(&topLeft(hotRect));

                LocalToGlobal(&botRight(hotRect));

                SetRect(&helpContent->absHotRect, hotRect.left, hotRect.top, hotRect.right, 

                        hotRect.bottom);

                helpContent->tagSide = kHMDefaultSide;

                helpContent->content[kHMMinimumContentIndex].contentType = kHMStringResContent;

                helpContent->content[kHMMinimumContentIndex].u.tagStringRes.hmmResID = rHelpStrings;

                helpContent->content[kHMMinimumContentIndex].u.tagStringRes.hmmIndex = 1;

                helpContent->content[kHMMaximumContentIndex].contentType = kHMNoContent;

            }

            SetPort(savedPort);

            break;

    }

    return result;

}

// --------------------------------------------------------------------------------------

void  SetPrefsDialogHelpTags(DialogRef prefsDialog)

{

    HMHelpContentRec helpContent;

    ControlRef control;

    SInt16 itemIndex;

    helpContent.version = kMacHelpVersion;

    SetRect(&helpContent.absHotRect, 0, 0, 0, 0);   // use the current location of the controls

    helpContent.tagSide = kHMDefaultSide;

        // set the help tag for the list box control

    helpContent.content[kHMMinimumContentIndex].contentType = kHMStringResContent;

    helpContent.content[kHMMinimumContentIndex].u.tagStringRes.hmmResID = rHelpStrings;

    helpContent.content[kHMMinimumContentIndex].u.tagStringRes.hmmIndex = 4;

    helpContent.content[kHMMaximumContentIndex].contentType = kHMNoContent;

    GetDialogItemAsControl(prefsDialog, iIconList, &control);

    HMSetControlHelpContent(control, &helpContent);

        // set the help tags for the user panes

    helpContent.content[kHMMinimumContentIndex].contentType = kHMStringResContent;

    helpContent.content[kHMMinimumContentIndex].u.tagStringRes.hmmResID = rHelpStrings;

    helpContent.content[kHMMinimumContentIndex].u.tagStringRes.hmmIndex = 3;

    helpContent.content[kHMMaximumContentIndex].contentType = kHMNoContent;

    for (itemIndex = iUserPane1; itemIndex <= iUserPane10; itemIndex += 2)

    {

        GetDialogItemAsControl(prefsDialog, itemIndex, &control);

        HMSetControlHelpContent(control, &helpContent);

    }

        // set the help tags for the static texts

    helpContent.content[kHMMinimumContentIndex].contentType = kHMStringResContent;

    helpContent.content[kHMMinimumContentIndex].u.tagStringRes.hmmResID = rHelpStrings;

    helpContent.content[kHMMinimumContentIndex].u.tagStringRes.hmmIndex = 2;

    helpContent.content[kHMMaximumContentIndex].contentType = kHMNoContent;

    for (itemIndex = iUserPane1 + 1; itemIndex <= iUserPane10 + 1; itemIndex += 2)

    {

        GetDialogItemAsControl(prefsDialog, itemIndex, &control);

        HMSetControlHelpContent(control, &helpContent);

    }

}