Re: DataGrid vs CellTable
On Monday, December 3, 2012 10:58:03 PM UTC+1, Tony B wrote: Thanks so much. That makes a lot of sense. So I just need to experiment with the data grid height. I would think using using *com.google.gwt.user.client.ui.ScrollPanel* instead would fix this, but it does not. I am still going to play with various height values, but just seemed weird because ScrollPanel implements ProvidesResize. …and RequiresResize, so you just moved the problem to another widget. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/gl16csv5plEJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: DataGrid vs CellTable
Yep, that makes sense as well. I finally got it working by explicitly defining the height ( 100px, for instance ). I guess I need to use something like ResizeLayoutPanel to get around such issues. we shall see. Thanks again. I do believe I am getting it. Tony On Tuesday, December 4, 2012 5:37:34 AM UTC-5, Thomas Broyer wrote: On Monday, December 3, 2012 10:58:03 PM UTC+1, Tony B wrote: Thanks so much. That makes a lot of sense. So I just need to experiment with the data grid height. I would think using using *com.google.gwt.user.client.ui.ScrollPanel* instead would fix this, but it does not. I am still going to play with various height values, but just seemed weird because ScrollPanel implements ProvidesResize. …and RequiresResize, so you just moved the problem to another widget. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/PtQfk_kC87wJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: DataGrid vs CellTable
Well, that makes sense, I guess. Granted, I don't know what size to expect, thus the percentage :-). I cannot just assume a PC browser, but also need to plan for mobile devices. There is a really good example out there ( herehttp://rvsoni.wordpress.com/2011/10/25/gwt-datagrid-with-pagination-using-simple-pager/). Maybe I should just rework my code to mimic this example more closely. Maybe that will help me wrap my head around things. It looks like my assumption was right: CellTable and DataGrid are not, strictly speaking, interchangeable ( not without extra work ). To bad. Thanks. Tony On Monday, December 3, 2012 2:59:49 AM UTC-5, Thomas Broyer wrote: On Monday, December 3, 2012 12:05:49 AM UTC+1, Tony B wrote: Ooops, missed your second question, about the parent widget. Here is the path: FlowPanel - WidgetList - DataGrid Your comments above about the contraints are what made me ask my question in the first place. I even set the size of the DataGrid to 100% on the hunch that that would meet your rule that it must be explicitly sized. 100% isn't reliable. RequiresRzsize widgets have to be informed when their size change, so you have to give them a size that won't change on your behalf (I think EMs and EXs will be detected –i.e. when the user changes his browser font settings–, though probably not by each and every RequiresResize widget; better stick with pixels). -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/6bNklwJgeH0J. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: DataGrid vs CellTable
The 100% won't help you, because the FlowPanel (which contains your DataGrid as I understand it) has a height of 0 unless you fill it with widgets that mount their own height. In other words, you are creating a cycle: The FlowPanel asks its children for the height they need, and the child (DataGrid) conversely asks the parent FlowPanel for its height. Obviously, this doesn't work, and in CSS, it always ends up with a height of 0 (not a special GWT thing). It's not, that DataGrid and CellTable aren't interchangeable. To the contrary: They are highly interchangeable, but they differ basically in exactly this point: CellTables span up their own height from inside out, whereas DataGrids require the size from outside in. (Note: Almost the only real reason for the requiresResize() is, that DataGrid uses a HeaderPanel, which performs one of the few JavaScript tricks still needed today, because CSS still can't do HeaderPanel-like layouts by itself.) On Monday, December 3, 2012 5:39:55 PM UTC+1, Tony B wrote: Well, that makes sense, I guess. Granted, I don't know what size to expect, thus the percentage :-). I cannot just assume a PC browser, but also need to plan for mobile devices. There is a really good example out there ( herehttp://rvsoni.wordpress.com/2011/10/25/gwt-datagrid-with-pagination-using-simple-pager/). Maybe I should just rework my code to mimic this example more closely. Maybe that will help me wrap my head around things. It looks like my assumption was right: CellTable and DataGrid are not, strictly speaking, interchangeable ( not without extra work ). To bad. Thanks. Tony On Monday, December 3, 2012 2:59:49 AM UTC-5, Thomas Broyer wrote: On Monday, December 3, 2012 12:05:49 AM UTC+1, Tony B wrote: Ooops, missed your second question, about the parent widget. Here is the path: FlowPanel - WidgetList - DataGrid Your comments above about the contraints are what made me ask my question in the first place. I even set the size of the DataGrid to 100% on the hunch that that would meet your rule that it must be explicitly sized. 100% isn't reliable. RequiresRzsize widgets have to be informed when their size change, so you have to give them a size that won't change on your behalf (I think EMs and EXs will be detected –i.e. when the user changes his browser font settings–, though probably not by each and every RequiresResize widget; better stick with pixels). -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/expzpkx8S0oJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: DataGrid vs CellTable
Thanks so much. That makes a lot of sense. So I just need to experiment with the data grid height. I would think using using *com.google.gwt.user.client.ui.ScrollPanel* instead would fix this, but it does not. I am still going to play with various height values, but just seemed weird because ScrollPanel implements ProvidesResize. Tony On Monday, December 3, 2012 4:09:26 PM UTC-5, Chris Lercher wrote: The 100% won't help you, because the FlowPanel (which contains your DataGrid as I understand it) has a height of 0 unless you fill it with widgets that mount their own height. In other words, you are creating a cycle: The FlowPanel asks its children for the height they need, and the child (DataGrid) conversely asks the parent FlowPanel for its height. Obviously, this doesn't work, and in CSS, it always ends up with a height of 0 (not a special GWT thing). It's not, that DataGrid and CellTable aren't interchangeable. To the contrary: They are highly interchangeable, but they differ basically in exactly this point: CellTables span up their own height from inside out, whereas DataGrids require the size from outside in. (Note: Almost the only real reason for the requiresResize() is, that DataGrid uses a HeaderPanel, which performs one of the few JavaScript tricks still needed today, because CSS still can't do HeaderPanel-like layouts by itself.) On Monday, December 3, 2012 5:39:55 PM UTC+1, Tony B wrote: Well, that makes sense, I guess. Granted, I don't know what size to expect, thus the percentage :-). I cannot just assume a PC browser, but also need to plan for mobile devices. There is a really good example out there ( herehttp://rvsoni.wordpress.com/2011/10/25/gwt-datagrid-with-pagination-using-simple-pager/). Maybe I should just rework my code to mimic this example more closely. Maybe that will help me wrap my head around things. It looks like my assumption was right: CellTable and DataGrid are not, strictly speaking, interchangeable ( not without extra work ). To bad. Thanks. Tony On Monday, December 3, 2012 2:59:49 AM UTC-5, Thomas Broyer wrote: On Monday, December 3, 2012 12:05:49 AM UTC+1, Tony B wrote: Ooops, missed your second question, about the parent widget. Here is the path: FlowPanel - WidgetList - DataGrid Your comments above about the contraints are what made me ask my question in the first place. I even set the size of the DataGrid to 100% on the hunch that that would meet your rule that it must be explicitly sized. 100% isn't reliable. RequiresRzsize widgets have to be informed when their size change, so you have to give them a size that won't change on your behalf (I think EMs and EXs will be detected –i.e. when the user changes his browser font settings–, though probably not by each and every RequiresResize widget; better stick with pixels). -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/7vT9hcf2VgUJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: DataGrid vs CellTable
So does this means they cannot be used interchangeably? For instance, I have a table. When I define it as a CellTable, it works fine. But when I simple change it to a DataGrid ( no other changes ), it does not work. Your comments suggest that I need to do some extra steps for DataGrid. I am just trying to confirm my understanding. Thanks - CellTable example: private AbstractCellTableFacilityModel facilityTable; facilityTable = new CellTableFacilityModel(); - DataGrid example: private AbstractCellTableFacilityModel facilityTable; facilityTable = new DataGridFacilityModel(); As stated above, the ONLY difference is the creation statement, which I highlighted in yellow above. Thanks. Tony On Saturday, December 31, 2011 5:38:52 AM UTC-5, Thomas Broyer wrote: DataGrid and CellTable both display data in similar ways; but DataGrid has fixed column headers with scrollable content (have a look at the Showcase: http://gwt.google.com/samples/Showcase/Showcase.html#!CwCellTable vs. http://gwt.google.com/samples/Showcase/Showcase.html#!CwDataGrid ) Note that DataGrid comes with a few constraints: it's a RequiresResize so it must be put inside a ProvidesResize widget or be explicitly sized, and it has fixed-width columns. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/PkaJttkkfQEJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: DataGrid vs CellTable
On Sunday, December 2, 2012 1:29:22 AM UTC+1, Tony B wrote: So does this means they cannot be used interchangeably? For instance, I have a table. When I define it as a CellTable, it works fine. But when I simple change it to a DataGrid ( no other changes ), it does not work. Does not work is not really helpful. Your comments suggest that I need to do some extra steps for DataGrid. I am just trying to confirm my understanding. Thanks - CellTable example: private AbstractCellTableFacilityModel facilityTable; facilityTable = new CellTableFacilityModel(); - DataGrid example: private AbstractCellTableFacilityModel facilityTable; facilityTable = new DataGridFacilityModel(); As stated above, the ONLY difference is the creation statement, which I highlighted in yellow above. Thanks. On Saturday, December 31, 2011 5:38:52 AM UTC-5, Thomas Broyer wrote: DataGrid and CellTable both display data in similar ways; but DataGrid has fixed column headers with scrollable content (have a look at the Showcase: http://gwt.google.com/samples/Showcase/Showcase.html#!CwCellTable vs. http://gwt.google.com/samples/Showcase/Showcase.html#!CwDataGrid ) Note that DataGrid comes with a few constraints: it's a RequiresResize so it must be put inside a ProvidesResize widget or be explicitly sized, and it has fixed-width columns. So, which is the parent widget of facilityTable? To read more about RequiresResize/ProvidesResize, see https://developers.google.com/web-toolkit/doc/latest/DevGuideUiPanels#Resize -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/QNKXcgvQ6U4J. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: DataGrid vs CellTable
Nothing fills in, no values go into the table, it is empty. Thus does not work. The only difference is the creation of the object. On Sunday, December 2, 2012 4:26:24 PM UTC-5, Thomas Broyer wrote: On Sunday, December 2, 2012 1:29:22 AM UTC+1, Tony B wrote: So does this means they cannot be used interchangeably? For instance, I have a table. When I define it as a CellTable, it works fine. But when I simple change it to a DataGrid ( no other changes ), it does not work. Does not work is not really helpful. Your comments suggest that I need to do some extra steps for DataGrid. I am just trying to confirm my understanding. Thanks - CellTable example: private AbstractCellTableFacilityModel facilityTable; facilityTable = new CellTableFacilityModel(); - DataGrid example: private AbstractCellTableFacilityModel facilityTable; facilityTable = new DataGridFacilityModel(); As stated above, the ONLY difference is the creation statement, which I highlighted in yellow above. Thanks. On Saturday, December 31, 2011 5:38:52 AM UTC-5, Thomas Broyer wrote: DataGrid and CellTable both display data in similar ways; but DataGrid has fixed column headers with scrollable content (have a look at the Showcase: http://gwt.google.com/samples/Showcase/Showcase.html#!CwCellTable vs. http://gwt.google.com/samples/Showcase/Showcase.html#!CwDataGrid ) Note that DataGrid comes with a few constraints: it's a RequiresResize so it must be put inside a ProvidesResize widget or be explicitly sized, and it has fixed-width columns. So, which is the parent widget of facilityTable? To read more about RequiresResize/ProvidesResize, see https://developers.google.com/web-toolkit/doc/latest/DevGuideUiPanels#Resize -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/9KjZHL3ZOksJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: DataGrid vs CellTable
Ooops, missed your second question, about the parent widget. Here is the path: FlowPanel - WidgetList - DataGrid Your comments above about the contraints are what made me ask my question in the first place. I even set the size of the DataGrid to 100% on the hunch that that would meet your rule that it must be explicitly sized. Granted, I am not sizing the columns, which you also mention. Regardless, if my understanding is correct, in order to use DataGrid and CellTable interchangeably, I would have to make some changes. On Sunday, December 2, 2012 4:26:24 PM UTC-5, Thomas Broyer wrote: On Sunday, December 2, 2012 1:29:22 AM UTC+1, Tony B wrote: So does this means they cannot be used interchangeably? For instance, I have a table. When I define it as a CellTable, it works fine. But when I simple change it to a DataGrid ( no other changes ), it does not work. Does not work is not really helpful. Your comments suggest that I need to do some extra steps for DataGrid. I am just trying to confirm my understanding. Thanks - CellTable example: private AbstractCellTableFacilityModel facilityTable; facilityTable = new CellTableFacilityModel(); - DataGrid example: private AbstractCellTableFacilityModel facilityTable; facilityTable = new DataGridFacilityModel(); As stated above, the ONLY difference is the creation statement, which I highlighted in yellow above. Thanks. On Saturday, December 31, 2011 5:38:52 AM UTC-5, Thomas Broyer wrote: DataGrid and CellTable both display data in similar ways; but DataGrid has fixed column headers with scrollable content (have a look at the Showcase: http://gwt.google.com/samples/Showcase/Showcase.html#!CwCellTable vs. http://gwt.google.com/samples/Showcase/Showcase.html#!CwDataGrid ) Note that DataGrid comes with a few constraints: it's a RequiresResize so it must be put inside a ProvidesResize widget or be explicitly sized, and it has fixed-width columns. So, which is the parent widget of facilityTable? To read more about RequiresResize/ProvidesResize, see https://developers.google.com/web-toolkit/doc/latest/DevGuideUiPanels#Resize -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/01Pwucbgn1YJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: DataGrid vs CellTable
On Monday, December 3, 2012 12:05:49 AM UTC+1, Tony B wrote: Ooops, missed your second question, about the parent widget. Here is the path: FlowPanel - WidgetList - DataGrid Your comments above about the contraints are what made me ask my question in the first place. I even set the size of the DataGrid to 100% on the hunch that that would meet your rule that it must be explicitly sized. 100% isn't reliable. RequiresRzsize widgets have to be informed when their size change, so you have to give them a size that won't change on your behalf (I think EMs and EXs will be detected –i.e. when the user changes his browser font settings–, though probably not by each and every RequiresResize widget; better stick with pixels). -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/L6vwcdMcRMMJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: DataGrid vs CellTable
DataGrid and CellTable both display data in similar ways; but DataGrid has fixed column headers with scrollable content (have a look at the Showcase: http://gwt.google.com/samples/Showcase/Showcase.html#!CwCellTable vs. http://gwt.google.com/samples/Showcase/Showcase.html#!CwDataGrid ) Note that DataGrid comes with a few constraints: it's a RequiresResize so it must be put inside a ProvidesResize widget or be explicitly sized, and it has fixed-width columns. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/CcBk6Rvpm-sJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
DataGrid vs CellTable
Hello, Can anyone tell me what is the difference between DataGrid and CellTable? When should we use which one? It seems GWT documentations uses CellTable in DataGrid API page as an example (http://google-web-toolkit.googlecode.com/svn/javadoc/latest/ com/google/gwt/user/cellview/client/DataGrid.html). Are they same? Thanks. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
