Some issues with download along

[naoliv]

Select some long objects and run "download along" with the smallest possible area ("Download everything within" = 10 meters and "Maximum area per request" = 1 km²)

Now note 3 things:

• there isn't any kind of progress bar
• we can't cancel the calculation
• JOSM hangs while "download along" is processing the areas

At least a dialog box saying that the plugin is calculating the area should be displayed (together with a "Cancel" button)

JOSM:

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2014-11-24 02:33:57
Last Changed Author: Don-vip
Revision: 7743
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Relative URL: ^/trunk
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2014-11-23 23:54:40 +0100 (Sun, 23 Nov 2014)
Last Changed Rev: 7743

Identification: JOSM/1.5 (7743 en) Linux Debian GNU/Linux testing (jessie)
Memory Usage: 247 MB / 8158 MB (107 MB allocated, but free)
Java version: 1.7.0_65, Oracle Corporation, OpenJDK 64-Bit Server VM
Java package: openjdk-7-jre:amd64-7u71-2.5.3-2
VM arguments: [-Dawt.useSystemAAFontSettings=on]
Dataset consistency test: No problems found

Plugins:
- Create_grid_of_ways (30762)
- ImageryCache (30738)
- OpeningHoursEditor (30737)
- PicLayer (30762)
- SimplifyArea (30791)
- buildings_tools (30762)
- conflation (0.1.7)
- contourmerge (1012)
- download_along (30762)
- editgpx (30737)
- geotools (30762)
- importvec (30762)
- jts (30762)
- log4j (30762)
- measurement (30737)
- merge-overlap (30784)
- notes (v0.9.5)
- opendata (30806)
- pbf (30762)
- pdfimport (30737)
- poly (30738)
- reverter (30737)
- scripting (30702)
- todo (29154)
- turnrestrictions (30762)
- undelete (30762)
- utilsplugin2 (30762)

[GerdP]

Please try again with current binaries. I think the performance problem was solved. I see no delay in calculation of the download areas and the download itself shows a progress bar with a working cancel button. Only open problem that I see is that the progress bar shows no progress when e.g. 16 areas are downloaded.

[GerdP]

In 14722/josm:

fix #10784 no progress in DownloadAlongAction (regression from r14688)