March 2012 - Pharo-users - lists.pharo.org

funny idea Symbol vs. Selector
by stephane ducasse May 14, 2015

May 14, 2015

Hi guys I'm thinking aloud... I was wondering if we could not take advantage of a new class: Selector. MethodDict would only contain selectors and not symbols. I remember that I talked about that with hernan. Stef

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Postmark email library
by Francois Stephany Aug. 31, 2013

Aug. 31, 2013

Hi guys, I've made a simple wrapper around the Postmark API. It lets you send emails without dealing with a SMTP server. You can read about it here: http://developer.postmarkapp.com/developer-libs.html http://developer.postmarkapp.com/developer-build.html and there: http://articles.tulipemoutarde.be/send-email-from-pharo-with-postmark It's pretty simple and naive implementation but it gets the job done. I'll add email attachements when I will need it. Francois

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Package browser?
by Rob Vens June 28, 2013

June 28, 2013

I am attempting to do the Pharo by Example book, but a package browser (which is used in the examples) is not in the 1.1.1 or 1.2 image. Should I still use categories? If I create a package in Monticello browser I am not able to add classes or anything (not as far as I could see). Just starting out using Pharo, so apologies if these questions are already answered elsewhere.

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Zinc crashes an image.
by Paul DeBruicker Sept. 25, 2012

Sept. 25, 2012

Hi - I'm pretty sure I'm having the same problem Phillipe had/described in this message: http://forum.world.st/Zinc-crashing-image-at-start-up-td3785797.html At least the PharoDebug.log is the same. It happens on both the most recent Cog and interpreter VM. Is there a way to recover from this? I could follow Sean's instructions from this thread if necessary: http://forum.world.st/Fwd-Oops-I-put-a-halt-in-a-startup-method-td3800729.h… Or is there a way to extract changes from a changes file for one image into another image? I'd rather fix the broken image but if its not possible I'd then just try to load those changes I don't have. Thanks for any guidance you can provide. Paul

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Help with the interaction with widgets or morphs like Checkboxes, and Radio buttons and Texteditor boxes
by Nelson Pingitore April 8, 2012

April 8, 2012

Hello Pharo Users. I am seeking help with the interaction with widgets or morphs like Checkboxes, and Radio buttons and Texteditor boxes, I am creating a User Settings Class to learn how to use Pharo. I copied some core widgets from the UITheme exampleBasicControls. I would like to know, starting with the code below, how to detect if the User has selected the "Ok" or "Cancel" button in the lower right of the form, and then if the user selects "Ok" how do I detect the state of the widgets (Checkboxes, Radio buttons, or Texteditor), and save those states to instance variables? |dialog builder radioModel treeModel CheckboxA| builder := UITheme exampleBuilder. dialog := (builder newPluggableDialogWindow: 'Example basic controls') useDefaultOKCancelButton. radioModel := ExampleRadioButtonModel new. treeModel := ValueHolder new contents: TextStyle actualTextStyles explorerContents. dialog contentMorph: ( ( dialog newRow: { dialog newLabelGroup: { 'Normal Label'->(dialog newLabel: 'A Label'). 'Normal Button'->(dialog newButtonFor: nil action: nil label: 'A Button' help: 'This is a button'). 'Default Button'->((dialog newButtonFor: nil action: nil label: 'Default Button' help: 'This is a default button') isDefault: true). 'Selected Button'->(dialog newButtonFor: (ValueHolder new contents: true) getState: #contents action: nil arguments: #() getEnabled: nil label: 'A Button' help: 'This is a selected button'). 'Checkbox A'->(dialog newCheckboxFor: (ValueHolder new contents: true) getSelected: #contents setSelected: #contents: label: 'A Checkbox' help: 'This is a checkbox'). 'Checkbox B'->(dialog newCheckboxFor: (ValueHolder new contents: true) getSelected: #contents setSelected: #contents: label: 'A Checkbox' help: 'This is a checkbox'). 'Checkbox C'->(dialog newCheckboxFor: (ValueHolder new contents: true) getSelected: #contents setSelected: #contents: label: 'A Checkbox' help: 'This is a checkbox'). 'Radio Buttons'-> ( ( dialog newColumn: { (dialog newRadioButtonFor: radioModel getSelected: #isLeft setSelected: #beLeft label: 'Left' help: 'This is a radio buton'). (dialog newRadioButtonFor: radioModel getSelected: #isCenter setSelected: #beCenter label: 'Center' help: 'This is a radio buton'). (dialog newRadioButtonFor: radioModel getSelected: #isRight setSelected: #beRight label: 'Right' help: 'This is a radio buton') } ) vResizing: #shrinkWrap ). 'Text Entry'->(dialog newTextEntryFor: (ValueHolder new contents: 'Hello') getText: #contents setText: #contents: help: 'This is a text entry'). 'Slider'->(dialog newSliderFor: (ValueHolder new contents: 0.5) getValue: #contents setValue: #contents: help: 'This is a slider'). 'Bump Temp'->(dialog newTextEntryFor: (ValueHolder new contents: '75') getText: #contents setText: #contents: help: 'This is the random shift'). }. dialog newVerticalSeparator. dialog newLabelGroup: { 'Drop List'->(dialog newDropListFor: (ListModel new list: #('One' 'Two' 'Three' 'Four')) list: #list getSelected: #selectionIndex setSelected: #selectionIndex: help: 'This is a drop list'). 'Normal List'-> ( ( dialog newListFor: (ListModel new list: #('One' 'Two' 'Three' 'Four'); selectionIndex: 3) list: #list selected: #selectionIndex changeSelected: #selectionIndex: help: 'This is a list' ) minWidth: 120 ). }. } ) vResizing: #spaceFill ); model: nil. builder openModal: dialog.

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Re: [Pharo-users] EXTERNAL: Re: Pharo Checkbox and Radio Button Questions
by Benjamin March 30, 2012

March 30, 2012

On Mar 30, 2012, at 5:17 PM, Pingitore, Nelson wrote: > Hi, > > Regarding the use of the following statement: dialog := (builder newPluggableDialogWindow: 'Example basic controls') useDefaultOKCancelButton. > > How do I detect if the user selected the OK or Cancel button? > > Your option provided below and listed here, puts an additional Ok button on the form. I am hoping to get instruction on capturing the user selection of the choices from the useDefaultOKCancelButton > > For defining your button, you use something like > 'Ok'->(dialog newButtonFor: nil action: nil label: 'A Button' help: 'This is a button'). > if instead you specify something like > 'Ok'->(dialog newButtonFor: model action: #okAction label: 'Ok' help: 'This is a button'). > Then when the button is clicked, the method okAction will be performed by model. > Then it's up to you to implement the wanted behavior in this method. > > > Thank you > > > > Nelson V. Pingitore Jr. > Lockheed Martin Corporation > Information Systems & Global Services > Program Surveillance > 410-279-2780 > > From: Benjamin [mailto:benjamin.vanryseghem@gmail.com] > Sent: Friday, March 30, 2012 9:27 AM > To: Pingitore, Nelson > Subject: Re: EXTERNAL: Re: Pharo Checkbox and Radio Button Questions > > > On Mar 30, 2012, at 3:06 PM, Pingitore, Nelson wrote: > > > Hi, > > Thank you for your reply. I Pharo is very exciting! > > I develop applications in Microsoftâs Visual Studio tools, using Visual Basic. For my example in Pharo, I am attempting to re-create a User Settings form via a Usersettings class in Pharo. > > > Here is my code: > > > > |dialog builder radioModel treeModel| > builder := UITheme exampleBuilder. > dialog := (builder newPluggableDialogWindow: 'Example basic controls') useDefaultOKCancelButton. > radioModel := ExampleRadioButtonModel new. > treeModel := ValueHolder new contents: TextStyle actualTextStyles explorerContents. > dialog contentMorph: ((dialog newRow: > { > dialog newLabelGroup: > { > 'Normal Label'->(dialog newLabel: 'A Label'). > 'Normal Button'->(dialog newButtonFor: nil action: nil label: 'A Button' help: 'This is a button'). > 'Default Button'->((dialog newButtonFor: nil action: nil label: 'Default Button' help: 'This is a default button') isDefault: true). > 'Selected Button'->(dialog newButtonFor: (ValueHolder new contents: true) getState: #contents > action: nil arguments: #() getEnabled: nil label: 'A Button' help: 'This is a selected button'). > > 'Checkbox A'->(dialog newCheckboxFor: (ValueHolder new contents: true) > getSelected: #contents setSelected: #contents: label: 'A Checkbox' help: 'This is a checkbox'). > 'Checkbox B'->(dialog newCheckboxFor: (ValueHolder new contents: true) > getSelected: #contents setSelected: #contents: label: 'A Checkbox' help: 'This is a checkbox'). > 'Checkbox C'->(dialog newCheckboxFor: (ValueHolder new contents: true) > getSelected: #contents setSelected: #contents: label: 'A Checkbox' help: 'This is a checkbox'). > 'Radio Buttons'->((dialog newColumn: { > (dialog newRadioButtonFor: radioModel > getSelected: #isLeft setSelected: #beLeft label: 'Left' help: 'This is a radio buton'). > ^^^^^^^^^ > Here is the selector of the method performed when this radio button. > Then, in this method, you can store the state wanted :) > Something like > > beLeft > > currentState = #left. > blablabla.... > > > > (dialog newRadioButtonFor: radioModel > getSelected: #isCenter setSelected: #beCenter label: 'Center' help: 'This is a radio buton'). > (dialog newRadioButtonFor: radioModel > getSelected: #isRight setSelected: #beRight label: 'Right' help: 'This is a radio buton')}) > vResizing: #shrinkWrap). > 'Text Entry'->(dialog newTextEntryFor: (ValueHolder new contents: 'Hello') > getText: #contents setText: #contents: help: 'This is a text entry'). > > 'Slider'->(dialog newSliderFor: (ValueHolder new contents: 0.5) > getValue: #contents setValue: #contents: help: 'This is a slider'). > }. > dialog newVerticalSeparator. > dialog newLabelGroup: > { > 'Drop List'->(dialog newDropListFor: (ListModel new list: #('One' 'Two' 'Three' 'Four')) > list: #list getSelected: #selectionIndex setSelected: #selectionIndex: help: 'This is a drop list'). > 'Normal List'->((dialog newListFor: (ListModel new list: #('One' 'Two' 'Three' 'Four'); selectionIndex: 3) > list: #list selected: #selectionIndex changeSelected: #selectionIndex: > help: 'This is a list') minWidth: 120). > > }. > }) > vResizing: #spaceFill); > model: nil. > builder openModal: dialog > â---------------------------------------------------------------------------------------------------â > This is an extract from the UITheme exampleBasicControls class > > My questions are related to capturing user selections: > > 1) How do I detect if the user selected âOkâ where I would want to save all of the user choices, or âCancelâ where the user choices are discarded? > > For defining your button, you use something like > 'Ok'->(dialog newButtonFor: nil action: nil label: 'A Button' help: 'This is a button'). > if instead you specify something like > 'Ok'->(dialog newButtonFor: model action: #okAction label: 'Ok' help: 'This is a button'). > Then when the button is clicked, the method okAction will be performed by model. > Then it's up to you to implement the wanted behavior in this method. > > 2) How do I detect which Checkboxes are checked or unchecked? > see the next point > > 3) How do I detect which Radio buttons are selected? > see the comment I let in your code above > > Another solution is to store in an inst var all your widgets (radio buttons/checkboxes) and then when you press ok, iterate over those inst vars and see which ones are selected or not > > 4) How do I capture the Text Entry content? > > If you have a pointer to the text entry, just do > myTextEntry text (or if it doesn't work, try getText instead) > > > Do I need to add instance variables to store user selections? If so, how do I capture the user selections into those variables. > > I think you will have to. > > > You're welcome, > > Ben > > > > > Thanks > > > > > > > > > > > Nelson V. Pingitore Jr. > Lockheed Martin Corporation > Information Systems & Global Services > Program Surveillance > 410-279-2780 > > From: Benjamin [mailto:benjamin.vanryseghem@gmail.com] > Sent: Friday, March 30, 2012 3:34 AM > To: The Pingitore Family > Cc: Pingitore, Nelson > Subject: EXTERNAL: Re: Pharo Checkbox and Radio Button Questions > > Welcome among us :) > > I hope you will have a great time using Pharo :) > > > Can you give me the code you are using as an example please ? > > There are at least two different ways to create such widgets, so if you want a better answer, I need more info :) > > > Ben > > On Mar 30, 2012, at 6:28 AM, The Pingitore Family wrote: > > > > Hi, > > I am new to Pharo. Am looking at the UITheme exampleBasicControls. I can see how the Checkboxes and Radio buttons are displayed, But, how do I capture if the Checkbox has been checked and what its state is? Same for the Radio buttons - How do I discover which radio button is selected? > > Thank you for your time and advice > > > > > ____________________________________________________________ > The New "Skinny" Fruit > How This Strange 62-Cent African Fruit Is Making Americans Skinny. > HLifestyles.com > >

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Append to file
by Sean P. DeNigris March 30, 2012

March 30, 2012

I'm sure this is easy, but I can't figure it out. I tried a variety of things, most recently: FileStream oldFileNamed: logFile pathString do: [ :s | s nextPutAll: 'message to append' ]. Thanks. Sean -- View this message in context: http://forum.world.st/Append-to-file-tp4517660p4517660.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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20th International Smalltalk Joint Conference - Call for Contributions
by Marcus Denker March 29, 2012

March 29, 2012

20th International Smalltalk Joint Conference - Call for Contributions Gent, Belgium August 27-31, 2012; Camp Smalltalk August 25-26 http://esug.org/Conferences/2012 This call includes: 1) Developers forum 2) Innovation Technology Award 3) International Workshop 4) Student Volunteer program 5) Free ESUG tickets program ---------------------------------------------------------------------- For the past 20 years, the European Smalltalk User Group (ESUG) has organised the International Smalltalk Conference, a lively forum on cutting edge software technologies that attract people from both academia and industry for a whole week. The attendees are both engineers using Smalltalk in business and students and teachers using Smalltalk both for research and didactic purposes. This year's edition of the largest European Smalltalk event will include: - The regular Smalltalk developers conference with renowned invited speakers - a Smalltalk camp that proved fruitful for interactions and discussions (August 25-26) - 9th edition of the Innovation Technology Awards where prizes will be awarded to authors of best pieces of Smalltalk-related projects - IWST: an international workshop on Smalltalk and dynamic languages You can support the ESUG conference in many different ways: - Sponsor the conference. New sponsoring packages are described at http://www.esug.org/About/SupportESUG - Submit a talk, a software or a paper to one of the events. See below. - Attend the conference. We'd like to beat the previous record of attendance (170 people at Amsterdam)! - Students can get free registration and hosting if they enroll into the the Student Volunteers program. See below. 1) Developers Forum: International Smalltalk Developers Conference ---------------------------------------------------------------------- This year we are looking for YOUR experience on using Smalltalk. In addition, we are looking for tutorials. The list of topics includes, but is not limited to the following: - XP practices - Development tools - Experience reports - Model driven development - Web development - Team management - Meta-Modeling - Security - New libraries & frameworks - Educational material - Embedded systems and robotics - SOA and Web services - Interaction with other programming languages Submissions due on 15 June 2012 Notification of acceptance on 25 June 2012 How to submit? Pay attention: the places are limited so do not wait till the last minute to apply. Prospective presenters should submit a request to board(a)esug.org AND damien.cassou(a)gmail.com AND stephane.ducasse(a)free.fr following the template below. Please use this template since the emails will be automatically processed! Subject: [ESUG 2012 Developers] + your name First Name: Last Name: Email where you can always be reached: Title: Abstract: (max 1400 characters) Bio: (max 1400 characters) Any presentation not respecting this form will be discarded automatically 2) Innovation Technology Award ---------------------------------------------------------------------- We are proud to announce the 9th Innovation Technology Awards. The top 3 teams with the most innovative software will receive, respectively, 500 Euros, 300 Euros and 200 Euros during an awards ceremony at the conference. Developers of any Smalltalk-based software are welcome to compete. This year we will request 3-5min videos. More information at: http://www.esug.org/Conferences/2012/Innovation-Technology-Awards 3) International Workshop - IWST 2012 ---------------------------------------------------------------------- International Workshop on Smalltalk Technologies, August 28 The goals of the workshop is to create a forum around advances or experience in Smalltalk and to trigger discussions and exchanges of ideas. Participants are invited to submit research articles. We will not enforce any length restriction. Nevertheless, we expect papers of two kinds: - Short position papers describing emerging ideas. - Long research papers with deeper description of experiments and of research results. We welcome research papers on all aspects, theoretical as well as practical, of Smalltalk related topics. All accepted papers will be published in ACM DL, and the authors of the best papers will be invited to submit an extended version to a journal special issue (to be confirmed). Submissions deadline: June 15, 2012 Notification of acceptance: July 15, 2012 More information at: http://www.esug.org/Conferences/2012/International-Workshop---IWST-2012 4) Student Volunteer Program ---------------------------------------------------------------------- If you are a student wanting to attend ESUG, have you considered being a student volunteer? Student volunteers help keep the conference running smoothly; in return, they have free accommodations, while still having most of the time to enjoy the conference. More information at: http://www.esug.org/Conferences/2012/StudentVolunteers 5) Free ESUG tickets program ---------------------------------------------------------------------- ESUG will offer 10 free entrance tickets. To get a free ticket you should send a mail to board(a)esug.org Subject: [ESUG 2012 Free entrance] + your name And you should write a small motivation. We hope to see you there and have fun together. -- The ESUG board Board mailing list: board(a)lists.esug.org

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Re: [Pharo-users] Questions about JNIPort and CallBacks
by Joachim Geidel March 29, 2012

March 29, 2012

Hi Muriel, >I work in VisualWorks and I use JNIPort to interact with Java. >I try to search a forum about this subject but I don't find, so I >contact you because I can see all my java Object but I want to do >callback on Smalltalk >object. In VisualWorks, JNIPort supports callbacks from Java to Smalltalk, including callbacks coming from another operating system thread (a "foreign thread"). However, it is relatively complicated to install a callback. The complication comes from the fact that JNIPort was originally developed for Dolphin Smalltalk, where the handling of callbacks from external libraries is such that it can easily lead to deadlocks in Smalltalk. VisualWorks implements callbacks from external libraries differently, and some of the complications could probably be dismissed. Unfortunately, I never had the time to simplify the current implementation of callbacks in JNIPort for VisualWorks. There is some documentation about using callbacks in the JNIPort documentation which is contained in the file attachment JNIPort_Docs.zip of the JNIPort bundle. You can read this only at Chris Uppal's web site: http://www.metagnostic.org/DolphinSmalltalk/JNIPort/callbacks.html http://www.metagnostic.org/DolphinSmalltalk/JNIPort/callback-example-1.html Don't take the hints to the "problem with threads" in the documentation too seriously, they apply to Dolphin Smalltalk only AFAICT. The source code of the examples is in the file attachment JNIPort_Extras.zip of the JNIPort bundle. It is in the archive JNIPort-Tests.zip, file TreeModelExample.java. If you don't have the file attachments of the JNIPort bundle, you can either download them from the Download page of the JNIPort wiki at http://jniport.wikispaces.com, or load the bundle from the Cincom Public Repository. They should also be in the contributed/JNIPort subdirectory of the VisualWorks installation. HTH, Joachim

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Status of OmniBrowser, OBSystemBrowser in 1.4?
by Helene Bilbo March 28, 2012

March 28, 2012

What will be the status of OmniBrowser - and from my perspective not the Framework, but the OBSystemBrowser, but it's surely connected - in Pharo 1.4? I read at the Seaside list: "There are no plans in supporting OB in Pharo 1.4." On the other hand i recently saw OmniBrowser has new features and - of all things - a Google+ page: https://plus.google.com/106411970666264136741/posts Also there seem to be different versions, that from a user-perspective are not easily distinguisable? Can anyone who knows about it explain or update the CollaboractiveBook page: http://book.pharo-project.org/book/PharoTools/OmniBrowser/ The missing OBSystemBrowser is what stopps me from really using 1.4 at the moment. Best regards, Helene. -- View this message in context: http://forum.world.st/Status-of-OmniBrowser-OBSystemBrowser-in-1-4-tp450836… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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