[Gambas-bugtracker] Bug #2949: Bug gb.report2 Page Break

[<bugtracker@xxxxxxxxxxxxxx>]

http://gambaswiki.org/bugtracker/edit?object=BUG.2949&from=L21haW4-

Omar MORENO reported a new bug.

Summary
-------

Bug gb.report2 Page Break

Type             : Bug
Priority         : Medium
Gambas version   : Unknown
Product          : Unknown


Description
-----------

1. Any object attempted to be placed in the report generates the following error:

	This Application has raised an unexpected erros and must abort.
	Null Object (#13)
	
	Fform.Control_Drop.3512

2. The `BeforeData()` events of any container do not generate a sequential cycle according to the number of rows assigned to its `DataCount` property.

3. The `Data(Index Integer)` events of objects (`ReportLabel`, `ReportTextLabel`) do not generate a sequential cycle according to the number of rows assigned to the `DataCount` property of their parent container.

4. The `ForceNewPage` property seems to only work in the `Data(Index Integer)` event of objects (`ReportLabel`, `ReportTextLabel`), but it appears that the cycle of its Index is affected incorrectly.

I am attaching a small example that includes:

   • A vector of 9 elements: [A, A, A, B, B, B, C, C, C]
   • A SpinBox to determine the number of elements to be printed.
   • A CheckBox to enable page breaks based on the column containing the letters.
   • Three RadioButtons to indicate which event will trigger a page break when the letter in the data changes.
   • A ReportView to display a preview of the report.
   • Three TextAreas to show how cycles are generated in each selected event when the CheckBox for "Page Break using column 2" is active.

The `BeforeData` event performs the following steps:
   1) Executes multiple times at index zero according to the `DataCount` property of its container.
   2) Then executes a cycle from index zero to the value of `DataCount` minus one.
   3) Finally, it repeats the cycle from step 2.

Note: The results at the indices are different when:
   • The total number of rows equals one.
   • When the report generates more than one page.


System information
------------------

[System]
Gambas=3.19.5
OperatingSystem=Linux
Distribution=Ubuntu 24.04.1 LTS (Noble Numbat)
Kernel=6.8.0-45-generic
Architecture=x86_64
Cores=4
Memory=7639M
Language=es_ES.UTF-8
Platform=wayland
Desktop=UBUNTU
DesktopResolution=96
DesktopScale=8
WidgetTheme=yaru
Font=Ubuntu Sans,11
[Programs]
dpkg=Programa de gestión de paquetes de Debian `dpkg' versión 1.22.6 (amd64).
gcc=gcc (Ubuntu 13.2.0-23ubuntu4) 13.2.0
msgmerge=msgmerge (GNU gettext-tools) 0.21
rpmbuild=RPM version 4.18.2
[Libraries]
Cairo=libcairo.so.2.11800.0
Curl=libcurl.so.4.8.0
DBus=libdbus-1.so.3.32.4
GDK2=libgdk-x11-2.0.so.0.2400.33
GDK3=libgdk-3.so.0.2409.32
GStreamer=libgstreamer-1.0.so.0.2402.0
GTK+2=libgtk-x11-2.0.so.0.2400.33
GTK+3=libgtk-3.so.0.2409.32
OpenGL=libGL.so.1.7.0
Poppler=libpoppler.so.134.0.0
QT5=libQt5Core.so.5.15.13
RSvg=librsvg-2.so.2.50.0
SDL=libSDL2-2.0.so.0.3000.0
SQLite 3=libsqlite3.so.0.8.6
[Environment]
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
DEBUGINFOD_URLS=https://debuginfod.ubuntu.com 
DESKTOP_SESSION=ubuntu
DISPLAY=:0
GB_GUI=gb.gtk3
GDMSESSION=ubuntu
GIO_LAUNCHED_DESKTOP_FILE=/usr/share/applications/gambas3.desktop
GIO_LAUNCHED_DESKTOP_FILE_PID=9182
GJS_DEBUG_OUTPUT=stderr
GJS_DEBUG_TOPICS=JS ERROR;JS LOG
GNOME_DESKTOP_SESSION_ID=this-is-deprecated
GNOME_SETUP_DISPLAY=:1
GNOME_SHELL_SESSION_MODE=ubuntu
GSM_SKIP_SSH_AGENT_WORKAROUND=true
GTK_MODULES=gail:atk-bridge
HOME=<home>
IM_CONFIG_PHASE=1
INVOCATION_ID=8e731d9b9c644d93afdc88ca866028cb
JOURNAL_STREAM=8:19715
LANG=es_ES.UTF-8
LANGUAGE=es_ES.UTF-8
LC_ADDRESS=es_PA.UTF-8
LC_ALL=es_ES.UTF-8
LC_IDENTIFICATION=es_PA.UTF-8
LC_MEASUREMENT=es_PA.UTF-8
LC_MONETARY=es_PA.UTF-8
LC_NAME=es_PA.UTF-8
LC_NUMERIC=es_PA.UTF-8
LC_PAPER=es_PA.UTF-8
LC_TELEPHONE=es_PA.UTF-8
LC_TIME=es_PA.UTF-8
LOGNAME=<user>
MANAGERPID=2755
MEMORY_PRESSURE_WATCH=/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/session.slice/org.gnome.Shell@wayland.service/memory.pressure
MEMORY_PRESSURE_WRITE=c29tZSAyMDAwMDAgMjAwMDAwMAA=
PAPERSIZE=letter
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/bin
PWD=<home>
QTWEBENGINE_DICTIONARIES_PATH=/usr/share/hunspell-bdic/
QT_ACCESSIBILITY=1
QT_IM_MODULE=ibus
QT_LOGGING_RULES=*.debug=false
SESSION_MANAGER=local/<hostname>:@/tmp/.ICE-unix/2997,unix/<hostname>:/tmp/.ICE-unix/2997
SHELL=/bin/bash
SHLVL=0
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
SYSTEMD_EXEC_PID=3027
TZ=:/etc/localtime
USER=<user>
USERNAME=<user>
WAYLAND_DISPLAY=wayland-0
XAUTHORITY=/run/user/1000/.mutter-Xwaylandauth.K64LU2
XDG_ACTIVATION_TOKEN=gnome-shell/Gambas 3/3027-7-<hostname>_TIME15682599
XDG_CONFIG_DIRS=/etc/xdg/xdg-ubuntu:/etc/xdg
XDG_CURRENT_DESKTOP=ubuntu:GNOME
XDG_DATA_DIRS=/usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop
XDG_MENU_PREFIX=gnome-
XDG_RUNTIME_DIR=/run/user/1000
XDG_SESSION_CLASS=user
XDG_SESSION_DESKTOP=ubuntu
XDG_SESSION_TYPE=wayland
XMODIFIERS=@im=ibus
_=/usr/bin/gnome-session


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