PageControlAnimationBlockExample has too-low contrast in the controls. It also does not disable the +2/-2 buttons even when they have no effect.
Updated colors to have an accessible contrast ratio, and updated the states of the buttons to show correct interactivity (enabled/disabled)

Closes#8919
This is a follow up PR for #7166 adds @objc annotations to Swift catalogMetadata() methods, because the Swift 4 compiler no longer attempts to infer what methods should be visible to Objective-C. As a result of this change in the compiler, no Swift examples were showing up in Dragons after #7166. See this article: https://useyourloaf.com/blog/objc-warnings-upgrading-to-swift-4/ for additional context.
Replacing all non-integral, single-precision floating point literals with double-precision values explicitly cast to CGFloat. For example, `0.1f` should become `(CGFloat)0.1`.
Regex used:
```
([0-9]*\.)([0-9]*?)([1-9]+)([0-9]*?)[fF]
```
PiperOrigin-RevId: 220683126
Removes the need to copy-paste stanzas from other files anymore as we'll rely on #4478 to generate the correct stanza for us instead.
This was an automated change generated by running a find-and-replace regular expression:
```
/\*
Copyright ([0-9]+)-present the Material Components for iOS authors\. All Rights Reserved\.
Licensed under the Apache License, Version 2\.0 \(the "License"\);
you may not use this file except in compliance with the License\.
You may obtain a copy of the License at
http://www\.apache\.org/licenses/LICENSE-2\.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied\.
See the License for the specific language governing permissions and
limitations under the License\.
\*/
```
```
/\*
Copyright ([0-9]+)-present the Material Components for iOS authors\. All Rights Reserved\.
Licensed under the Apache License, Version 2\.0 \(the "License"\);
you may not use this file except in compliance with the License\.
You may obtain a copy of the License at
http://www\.apache\.org/licenses/LICENSE-2\.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied\.
See the License for the specific language governing permissions and
limitations under the License\.
\*/
```
```
/\*
Copyright ([0-9]+)-present the Material Components for iOS authors\. All Rights Reserved\.
Licensed under the Apache License, Version 2\.0 \(the "License"\);
you may not use this file except in compliance with the License\.
You may obtain a copy of the License at
http://www\.apache\.org/licenses/LICENSE-2\.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied\.
See the License for the specific language governing permissions and
limitations under the License\.
\*/
```
```
// Copyright $1-present the Material Components for iOS authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
```
We can now make use of @available throughout our codebase.
We support Xcode 9 and up, which includes the iOS 11 SDK. This means we can remove any guards for SDKs prior to iOS 11.
This was cleaned up by running a global find-and-replace with the following regular expression:
```
Find:#if defined\(__IPHONE_11_0\) && \(__IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_11_0\)\n(.+if \(@available\(iOS 11.0, \*\)\) \{(?:.|\n)*?)(?:#else(?:.|\n)*?)?\n#endif
Replace:$1
```
With some additional cleanup for stragglers that didn't match this pattern. Note that else clauses were intentionally dropped.
Closes https://github.com/material-components/material-components-ios/issues/4909
Many of our Swift examples are either missing imports or are importing all of
MaterialComponents. Both of these will cause failures during internal builds.
* Added warnings to examples.
* fixed some warnings
* using button sender parameter.
* use button sender in example
* use button sender in example
* removed sender from methods that don’t use it.
* removed sender from methods that don’t use it.
* use button sender in example
* use button sender in example
* use button sender in example
* use button sender in example
* Fixed init of header configurator to use passed in parameter
* removed unused API
* use button sender in example
* Revert "Added warnings to examples."
This reverts commit 91f0480f86cb609c47b00f1346f82de67c31c4e9.
* fixed example: Using the view controllers navigationItem rather than creating a new one.
* removed finished checks from animation blocks in examples.
* reverted id sender checks
* revert id sender check for Flexible header UINavigationBar
* revert clug
* revert clug
* addressing nits
* removed sender check for FeatureHighlightTypicalUseView
* more nits
All examples now have at least the required `+catalogBreadcrumbs` and `+catalogIsPrimaryDemo`. All examples in the same breadcrumbs path have only one primary demo. There should be only one `-catalogDescription` attached to the primary demo.
Closes#1897
* Replace MDC all icons
* Update border
* Replace MDCActionExtension icon with new logo
* Update all headers to be white on black
* Make Catalog greyscale to match Material’s style.
* Fix collection tile
* Update all headers to be white on black
* Make Catalog greyscale to match Material’s style.
* Fix collection tile
* WIP: Updating TabBar example to use black/green theme.
* WIP: Monochoroming all examples.
* Switch MDC Catalog to a black and white theme (#1355)
* Replace MDC all icons
* Update border
* Replace MDCActionExtension icon with new logo
* Update all headers to be white on black
* Make Catalog greyscale to match Material’s style.
* Fix collection tile
* Update all headers to be white on black
* Make Catalog greyscale to match Material’s style.
* Fix collection tile
* Fix floats
* Make Catalog greyscale to match Material’s style.
* More black and whiting
* WIP: Snackbar and global style
* Simplify snack bar examples.
* Page control
* ClangFormat changes.
* Added swiftlint to scripts/format_all.`
* Fix scripts/lint_all to work from any directory.
* Fixed swiftlint invocation.
* Remove the checks for force casting (! operator).
* Some fixes.
* More Swift fixes.
* Integrate SwiftLint in the Catalog.
* Update the disabled SwiftLint rules.
* Reference a local swiftlint.yml symlink.
This prevents us from getting warnings about code style violations from the other demos.
* Fix SwiftLint violations in the Catalog and Components.
* Ignore the `third_party` directory when running the linter.
We should not have to deal with warnings in code we may not be able to fix easily.
* Integrate SwiftLint into Shrine.
Additionally, fix a number of warnings introduced.
* Run SwiftLint on Travis.
* Enable many of the previously disabled rules and correct them.
* Fix control statement violations from SwiftLint.
* WIP
* WIP
* Simplified build script and fixed it to build all schemes.
* WIP
* Renamed script to build_all and added better output.
* Add scripts/list_xcode_workspaces.
* Filtered out the CocoaPods schemes.
* Use Xcode to update Swift to v3.
* Updated tracked touches map from NSNumber to Int.
* Fixed button sorting that was not actually sorting.
* targetContentOffset no longer allowed to be nil.
* "Fixed" failing test by reducing random number range?
* Swift 3 syntax change.
* Swift 3 syntax change.
* Removed invalid center-aligning tests.
Fixed default nav bar alignment test.
We can credit any contributor who would like to be credited this way, by adding them on request to the AUTHORS file. The copyright statement changes are required for this to work. Note that this has...
Summary:
We can credit any contributor who would like to be credited this way, by adding them on request to the AUTHORS file. The copyright statement changes are required for this to work. Note that this has no legal change, since the contributors always retained their copyright despite the copyright notice, but it's a nice acknowledgement.
Changed copyright statement to include non-Google authors.
Command run:
find * \( -name '*\.m' -or -name '*\.h' -or -name '*\.swift' \) -and -not \( -path 'scripts/external*' -name Pods \) -print0 | xargs -0 sed -i '' 's/Copyright \(.*\) Google Inc/Copyright \1 the Material Components for iOS authors/'
Added non-source files.
Command run:
grep -Rl 'Copyright .* Google Inc' * --exclude-dir scripts/external --null | xargs -0 sed -i '' 's/Copyright \(.*\) Google Inc/Copyright \1 the Material Components for iOS authors/'
Reviewers: featherless, O1 Material components iOS, randallli
Reviewed By: O1 Material components iOS, randallli
Tags: #material_components_ios
Differential Revision: http://codereview.cc/D1415
Summary: "Material design" is not capitalized except when referring to the actual Material Design team at Google.
Reviewers: O1 Material components iOS, randallli
Reviewed By: O1 Material components iOS, randallli
Subscribers: randallli, featherless
Tags: #material_components_ios
Differential Revision: http://codereview.cc/D1306
Summary: A team was having difficulty getting there animated page control working. This was to show them how we would animate the page control in the sandbox that is our examples.
Reviewers: cjcox, O1 Material components iOS
Reviewed By: cjcox, O1 Material components iOS
Subscribers: mluzuria
Tags: #material_components_ios
Differential Revision: http://codereview.cc/D1016
Summary: scrollViewDidScroll: now detects if it the scrollView.contentOffset has an CAAnimation. If so then it will animate the indicator and track accordingly.
Reviewers: cjcox, O1 Material components iOS
Reviewed By: cjcox, O1 Material components iOS
Tags: #material_components_ios
Differential Revision: http://codereview.cc/D1043