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fix: support older versions of android #28

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fix: support older versions of android #28

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24 changes: 23 additions & 1 deletion android/src/main/java/com/getcapacitor/community/safearea/SafeArea.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -8,10 +8,13 @@ import androidx.core.graphics.Insets
import androidx.core.view.ViewCompat
import androidx.core.view.WindowCompat
import androidx.core.view.WindowInsetsCompat
import java.util.regex.Matcher

class SafeArea(private val activity: Activity, private val webView: WebView) {
var offset = 0
private var appearanceUpdatedInListener = false
private var webViewVersion = initWebViewVersion();
private var renderFunction = initRenderFunction();

fun enable(updateInsets: Boolean, appearanceConfig: AppearanceConfig) {
activity.window.decorView.getRootView().setOnApplyWindowInsetsListener { view, insets ->
Expand Down Expand Up @@ -105,7 +108,26 @@ class SafeArea(private val activity: Activity, private val webView: WebView) {

private fun setProperty(position: String, size: Int) {
activity.runOnUiThread {
webView.loadUrl("javascript:document.querySelector(':root')?.style.setProperty('--safe-area-inset-" + position + "', 'max(env(safe-area-inset-" + position + "), " + size + "px)');void(0);")
webView.loadUrl(renderFunction(position, size))
}
}

private fun initRenderFunction(): (position: String, size: Int) -> String {
val x = webViewVersion
return when {
// Before env or max where supported
(x in 55..79) -> { position: String, size: Int -> "javascript:(function() { var _a; if (typeof document !== 'undefined') {(_a = document.querySelector(':root')) === null || _a === void 0 ? void 0 : _a.style.setProperty('--safe-area-inset-" + position + "', '" + size + "px)');}})"}
(x >= 80) -> { position: String, size: Int -> "javascript:document.querySelector(':root')?.style.setProperty('--safe-area-inset-" + position + "', 'max(env(safe-area-inset-" + position + "), " + size + "px)');void(0);"}
else -> {
throw Error();
}
}
}

private fun initWebViewVersion(): Int {
val regex = Regex("Chrome/([\\d.]+)")
val matchResult = regex.find(webView.settings.userAgentString)

return matchResult?.groups?.get(1)?.value?.toInt() ?: 55
}
}