[Interest] QT Installer framework - Customize Pages

[Karsten Heimrich]

Hi,

On 13.03.2014 14:46, Sandeep wrote:
>
> Hello,
>
> I went through the Qt-IF documentation may be 3 to 4 times, went 
> through all the examples, did some trial and error but still not able 
> to get hold of few things, in fact many things. Hoping to get some 
> answers from the experts.
>
> Question1: I want to get rid of the Header part of the Introduction 
> Page, how do I do it?
>
> The documentation at this link 
> http://doc-snapshot.qt-project.org/qtifw-1.3/noninteractive.html talks 
> about only selected widgets, for example, the Introduction Page has 
> only access to 2 widgets, "Next", "Cancel" buttons, but what if I 
> decide to not have the Header section (which has the title and the 
> logo). Is there a way to disable? I am not talking about empty Title, 
> I am talking about the getting rid of the whole Header part.
>
> Question2: What is the difference between "function Component" and 
> "function Controller" in the installer.qs scripts used in examples? 
> Basically what are they? I tried registering for the 
> IntroductionPageCallback but never got called.
>
> function Component()
>
> {
>
> }
>
> Component.prototype.IntroductionPageCallback=function()
>
> {
>
> }
>
> Or?
>
> function Controller()
>
> {
>
> }
>
> Controller.prototype.IntroductionPageCallback = function()
>
> {
>
> }
>
> Neither of them worked for me, Callbacks are not even called. what is 
> the correct way to get a callback?
>
Just as an short explanation, once we put "your" script inside the 
script engine, we wrap it inside a closure, so it will look like this:

(function()
var component = installer.componentByName("your.component.name");
function Component()
{
};

// other stuff goes here

return new Component;
)();

Same goes for the Controller stuff. The Controller stuff is supposed to 
work with a script you pass as argument to the the installer binary, 
basically to support headless automated installations. I will come back 
to you ASAP on how to use that.

> Question3: If I choose to run my application after the installation 
> using the "<RunProgram>my app binary</RunProgram> , I get a checkbox 
> with a tick mark after my installation, asking if I want to run my 
> application, I can either check or uncheck the checkbox and say Next. 
> This makes sense during installation flow. But this checkbox also 
> appears after my uninstallation (last screen during uninstallation), 
> asking "Do you want to run my app binary", which does not makes sense. 
> How do I make sure the checkbox (run my app binary)does not come in 
> the uninstallation flow.
>
This shouldn't happen, after looking at the code it will only show up if 
the binary is not running as installer and the run program is not empty. 
So i would recommend to open a bug report on 
https://bugreports.qt-project.org/secure/Dashboard.jspa and attach a 
sample script to show the broken behavior.

> Question 4: When I register for the signals "installationFinished" my 
> functions in the installscript.qs gets called, but surprisingly the 
> signals "uninstallationStarted and uninstallationFinished" never gets 
> called if I register some functions.
>
Same here, please open an issue and attach a script that shows the 
broken behavior.

> Not sure why? Also in qinstaller.h we have the below code for 
> identifying different state/stages of installation, but how can I get 
> similar information for un-installation?
>
You can ask the installer about its run mode, like this:

function Component()
{
     component.loaded.connect(this, Component.prototype.loaded);
     installer.installationFinished.connect(this, 
Component.prototype.installationFinishedPageIsShown);

/*
     NOTE: you have access to the following global variables:
         component    // like: component.userInterface(...)
         QInstaller   // like: QInstaller.Success
         installer    // like installer.isInstaller()
         QFileDialog, buttons, QMessageBox, QDesktopServices
*/
}

Component.prototype.loaded = function()
{
     var foo = installer.isInstaller();
     var bar = installer.isUninstaller();
}

Component.prototype.installationFinishedPageIsShown = function()
{
     if (installer.isInstaller() && installer.status == QInstaller.Success)
         installer.addWizardPageItem( component, 
"YourCheckBoxToStartAnApp", QInstaller.InstallationFinished);
}

> enum Status {
>
>     InstallerUnfinished,
>
>     InstallerCanceledByUser,
>
>     InstallerRunning,
>
>     InstallerFailed,
>
>     InstallerSucceeded,
>
> };
>
> int status() const;
>
> enum WizardPage {
>
>     Introduction = 0x1000,
>
>     TargetDirectory = 0x2000,
>
>     ComponentSelection = 0x3000,
>
>     LicenseCheck = 0x4000,
>
>     StartMenuSelection = 0x5000,
>
>     ReadyForInstallation = 0x6000,
>
>     PerformInstallation = 0x7000,
>
>     InstallationFinished = 0x8000,
>
>     End = 0xffff
>
> };
>
> Thanks,
>
> -Sandeep
>
>
>
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-- Karsten
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